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Title: Recoil-α-fission and recoil-α–α-fission events observed in the reaction 48Ca + 243Am

Journal Article · · Nuclear Physics. A
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  1. Lund Univ. (Sweden)
  2. Helmholtz Inst. Mainz (Germany)
  3. Johannes Gutenberg Univ., Mainz (Germany)
  4. Helmholtz Inst. Mainz (Germany); Johannes Gutenberg Univ., Mainz (Germany); GSI Helmholtz Centre for Heavy Ion Research GmbH, Darmstadt (Germany)
  5. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  6. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  7. Univ. of Liverpool, Liverpool (United Kingdom)
  8. Helmholtz Inst. Mainz (Germany); GSI Helmholtz Centre for Heavy Ion Research GmbH, Darmstadt (Germany)
  9. Helmholtz Institute Mainz, Mainz (Germany)
  10. GSI Helmholtz Centre for Heavy Ion Research GmbH, Darmstadt (Germany); Japan Atomic Energy Agency, Ibaraki (Japan)
  11. GSI Helmholtz Centre for Heavy Ion Research GmbH, Darmstadt (Germany)
  12. Helmholtz Inst. Mainz (Germany); Johannes Gutenberg Univ., Mainz (Germany)
  13. Univ. of Warsaw, Warsaw (Poland); Univ. of York, York (United Kingdom)
  14. Helmholtz Inst. Mainz (Germany); Univ. of Groningen, Groningen (The Netherlands)
  15. GSI Helmholtzzentrum fur Schwerionenforschung GmbH, Darmstadt (Germany)
  16. Univ. of Liverpool, Liverpool (United Kingdom); Helmholtz Institute Mainz, Mainz (Germany)
  17. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Warsaw, Warsaw (Poland); Michigan State Univ., East Lansing, MI (United States)
  18. Univ. of Oslo, Oslo (Norway)
  19. Univ. of Liverpool, Liverpool (United Kingdom); Univ. of Jyvaskyla, Jyvaskyla (Finland)
  20. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Michigan State Univ., East Lansing, MI (United States)
  21. Paul Scherrer Inst. (PSI) and Univ. of Bern, Villigen (Switzerland)
+ Show Author Affiliations

Products of the fusion-evaporation reaction 48Ca + 243Am were studied with the TASISpec set-up at the gas-filled separator TASCA at the GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany. Amongst the detected thirty correlated α-decay chains associated with the production of element , two recoil-α-fission and five recoil--fission events were observed. The latter five chains are similar to four such events reported from experiments performed at the Dubna gas-filled separator, and three such events reported from an experiment at the Berkeley gas-filled separator. The four chains observed at the Dubna gas-filled separator were assigned to start from the 2n-evaporation channel 289 115 due to the fact that these recoil--fission events were observed only at low excitation energies. Contrary to this interpretation, we suggest that some of these recoil--fission decay chains, as well as some of the recoil--fission and recoil-α-fission decay chains reported from Berkeley and in this article, start from the 3n-evaporation channel 288 115.

Research Organization:
Michigan State Univ., East Lansing, MI (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); European Commision (EC); Royal Physiographic Society in Lund (Sweden); Swedish Research Council (SRC); German Federal Ministry of Education and Research (BMBF); Science and Technology Facilities Council (STFC) (United Kingdom); USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
NA0002847; NA0002574; SC0008511; 262010; AC02-05CH11231; AC05-00OR22725
OSTI ID:
1332816
Alternate ID(s):
OSTI ID: 1347248; OSTI ID: 1358655; OSTI ID: 1454485; OSTI ID: 1492176
Journal Information:
Nuclear Physics. A, Vol. 953, Issue C; ISSN 0375-9474
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 44 works
Citation information provided by
Web of Science

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H.</li> <li class="mb-0-5 source"> <span class="mr-1">Physical Review Letters, Vol. 83, Issue 6</span> <span class="text-muted"><a href="https://doi.org/10.1103/PhysRevLett.83.1108" class="text-muted" target="_blank" rel="noopener noreferrer">https://doi.org/10.1103/PhysRevLett.83.1108<span class="fa fa-external-link" aria-hidden="true"></span></a></span> </li> </ul> </td> <td class="small text-muted biblio-refs-td-secondary"> <span class="biblio-refs-type-badge ml-1 type" data-type="journal">journal</span> </td> <td class="small text-muted biblio-refs-td-secondary biblio-refs-td-secondary-date"><span class="date" data-date="1999-08-01">August 1999</span></td> </tr><tr> <td> <a href="https://doi.org/10.1103/PhysRevC.85.024304" target="_blank" rel="noopener noreferrer" class="title" data-title="Nuclear energy density optimization Large deformations">Nuclear energy density optimization: Large deformations<span class="fa fa-external-link" aria-hidden="true"></span></a> <ul class="small references-list mb-0 mt-0" style="list-style-type:none; padding-left: 0; line-height:1.8em;"> <li class="authors">Kortelainen, M.; McDonnell, J.; Nazarewicz, W.</li> <li class="mb-0-5 source"> <span class="mr-1">Physical Review C, Vol. 85, Issue 2</span> <span class="text-muted"><a href="https://doi.org/10.1103/PhysRevC.85.024304" class="text-muted" target="_blank" rel="noopener noreferrer">https://doi.org/10.1103/PhysRevC.85.024304<span class="fa fa-external-link" aria-hidden="true"></span></a></span> </li> </ul> </td> <td class="small text-muted biblio-refs-td-secondary"> <span class="biblio-refs-type-badge ml-1 type" data-type="journal">journal</span> </td> <td class="small text-muted biblio-refs-td-secondary biblio-refs-td-secondary-date"><span class="date" data-date="2012-02-01">February 2012</span></td> </tr></tbody></table> </div> </div> </section> <hr class="mt-2 mb-2"/> <section id="section-citations" data-list="list_cite" class="tab-content-sec osti-curated biblio-section section-scroll" style="scroll-margin-top:110px;"> <div class="biblio-section-navbar active row"> <div class="col"> <h2 class="abstract biblio-section-title mt-0 mb-0-5" style="cursor:pointer;"><span class="fa indicator"></span> Cited By (4) <span class="text-muted list-table-filternum"></span></h2> </div> <div class="col-md-12 col-lg-auto"> <form class="pure-form reference-filter d-print-none"> <div class="small biblio-section-navbar-tool"> <label for="list-table-search-citations" class="sr-only">Search citations: </label> <input type="text" class="list-table-search mt-0 mb-0-5 ml-1" id="list-table-search-citations" placeholder="Search citations ..."> </div> <div class="small biblio-section-navbar-tool"> <select class="list-table-type mt-0 mb-0-5"> <option value="">Resource Types</option> <option value="journal">Journal</option><option value="text">Text</option> </select> </div> <div class="small biblio-section-navbar-tool"> <select class="list-table-sort mt-0 mb-0-5"> <option value="date">Sort by Date</option> <option value="title">Sort by Title</option> </select> </div> <div class="small biblio-section-navbar-tool"> <button type="reset" class="pure-button list-table-reset mt-0 mb-0-5">↺</button> </div> </form> </div> </div> <div class="row"> <div class="col-sm-12"> <table id="list-table-citations" class="truncate-rows list-table table-striped" data-rows="5" style="width:100%;"><tbody class="list"><tr> <td> <a href="https://doi.org/10.1088/1361-6471/aaf0cb" target="_blank" rel="noopener noreferrer" class="title" data-title="Reply to Comment on Analysis of decay chains of superheavy nuclei produced in the sup249sup Bk sup48sup Ca and sup243sup Am sup48sup Ca reactions">Reply to Comment on ‘Analysis of decay chains of superheavy nuclei produced in the <sup>249</sup> Bk + <sup>48</sup> Ca and <sup>243</sup> Am + <sup>48</sup> Ca reactions’<span class="fa fa-external-link" aria-hidden="true"></span></a> <ul class="small references-list mb-0 mt-0" style="list-style-type:none; padding-left: 0; line-height:1.8em;"> <li class="authors">Zlokazov, V. 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padding-left: 0; line-height:1.8em;"> <li class="authors">Heßberger, Fritz Peter</li> <li class="mb-0-5 source"> <span class="mr-1">EPJ Web of Conferences, Vol. 131</span> <span class="text-muted"><a href="https://doi.org/10.1051/epjconf/201613102005" class="text-muted" target="_blank" rel="noopener noreferrer">https://doi.org/10.1051/epjconf/201613102005<span class="fa fa-external-link" aria-hidden="true"></span></a></span> </li> </ul> </td> <td class="small text-muted biblio-refs-td-secondary"> <span class="biblio-refs-type-badge ml-1 type" data-type="journal">journal</span> </td> <td class="small text-muted biblio-refs-td-secondary biblio-refs-td-secondary-date"><span class="date" data-date="2016-01-01">January 2016</span></td> </tr><tr> <td> <a href="https://doi.org/10.1088/1361-6471/aaeba0" target="_blank" rel="noopener noreferrer" class="title" data-title="Comment on Analysis of decay chains of superheavy nuclei produced in the sup249sup Bk sup48sup Ca and sup243sup Am sup48sup Ca reactions">Comment on ‘Analysis of decay chains of superheavy nuclei produced in the <sup>249</sup> Bk + <sup>48</sup> Ca and <sup>243</sup> Am + <sup>48</sup> Ca reactions’<span class="fa fa-external-link" aria-hidden="true"></span></a> <ul class="small references-list mb-0 mt-0" style="list-style-type:none; padding-left: 0; line-height:1.8em;"> <li class="authors">Forsberg, U.; Leino, M.</li> <li class="mb-0-5 source"> <span class="mr-1">Journal of Physics G: Nuclear and Particle Physics, Vol. 46, Issue 1</span> <span class="text-muted"><a href="https://doi.org/10.1088/1361-6471/aaeba0" class="text-muted" target="_blank" rel="noopener noreferrer">https://doi.org/10.1088/1361-6471/aaeba0<span class="fa fa-external-link" aria-hidden="true"></span></a></span> </li> </ul> </td> <td class="small text-muted biblio-refs-td-secondary"> <span class="biblio-refs-type-badge ml-1 type" data-type="journal">journal</span> </td> <td class="small text-muted biblio-refs-td-secondary biblio-refs-td-secondary-date"><span class="date" data-date="2018-11-22">November 2018</span></td> </tr><tr> <td> <a href="https://doi.org/10.15120/gsi-2016-03705" target="_blank" rel="noopener noreferrer" class="title" data-title="Nuclear structure of the transactinides investigated by decay spectroscopy">Nuclear structure of the transactinides – investigated by decay spectroscopy<span class="fa fa-external-link" aria-hidden="true"></span></a> <ul class="small references-list mb-0 mt-0" style="list-style-type:none; padding-left: 0; line-height:1.8em;"> <li class="authors">Hessberger, Fritz-Peter</li> <li class="mb-0-5 source"> <span class="mr-1">GSI Helmholtzzentrum fuer Schwerionenforschung, GSI, Darmstadt</span> <span class="text-muted"><a href="https://doi.org/10.15120/gsi-2016-03705" class="text-muted" target="_blank" rel="noopener noreferrer">https://doi.org/10.15120/gsi-2016-03705<span class="fa fa-external-link" aria-hidden="true"></span></a></span> </li> </ul> </td> <td class="small text-muted biblio-refs-td-secondary"> <span class="biblio-refs-type-badge ml-1 type" data-type="text">text</span> </td> <td class="small text-muted biblio-refs-td-secondary biblio-refs-td-secondary-date"><span class="date" data-date="2016-01-01">January 2016</span></td> </tr></tbody></table> </div> </div> </section> <hr class="mt-2 mb-2"/> <section id="section-images" data-list="list_img" class="tab-content-sec osti-curated biblio-section section-scroll" style="scroll-margin-top:110px;"> <div class="biblio-section-navbar active row"> <div class="col"> <h2 class="abstract biblio-section-title mt-0 mb-0-5" style="cursor:pointer;"><span class="fa indicator"></span> Figures / Tables (12) <span class="text-muted list-table-filternum"></span></h2> </div> <div class="col-md-12 col-lg-auto"> <form class="pure-form reference-filter d-print-none"> <div class="small biblio-section-navbar-tool"> <label for="list-table-search-figures" class="sr-only">Search figures / tables: </label> <input type="text" class="list-table-search mt-0 mb-0-5 ml-1" id="list-table-search-figures" placeholder="Search figures / tables ..."> </div> <div class="small biblio-section-navbar-tool"> <select class="list-table-sort mt-0 mb-0-5"> <option value="date">Sort by Date</option> <option value="title">Sort by Title</option> </select> </div> <div class="small biblio-section-navbar-tool"> <button type="reset" class="pure-button list-table-reset mt-0 mb-0-5">↺</button> </div> </form> </div> </div> <div class="row"> <div class="col-sm-12"> <table id="list-table-images" class="truncate-rows list-table list-table-images table-to-tiles" data-rows="1" style="width:100%;"><tbody class="list"> <tr class="biblio-image-tile "><td class="col-sm-3"> <a id="img-1332816-img17212" data-pos="first" href="#modal-image" data-modal-toggle="true" class="biblio-image-tile-a ga-click-event apporder order title desc" data-imgid="1332816-img17212" data-lityx data-category="Extracted Images" data-label="biblio: image thumbnail" data-value="1332816-img17212" data-apporder="p. 22" data-order="1" data-imgid="1332816-img17212" data-imgsrc="/biblio/1332816/image/000/240/0002402/1/0017212.png" data-title="Figure 1" data-desc="(Colour online) Correlation times [(a)–(c)] and α-energy spectra [(d) and (e)] of decay chains observed in the reaction <sup>48</sup>Ca + <sup>243</sup>Am. The term “α energy” includes possible summation with energy deposited by conversion or Auger electrons. The black histograms are reference spectra and relate to experimental data from the 96 chains associated with the 3n evaporation channel <sup>288</sup>115 in Refs. [7,8,12]. The shaded areas in panels (a)–(c) are the corresponding time distributions. The shaded areas in panels (d) and (e) are the energy distributions derived from Monte Carlo simulations as outlined in Refs. [7,32,35]. The data points of the fourteen observed recoil-α–(α-)fission events are provided on top of each spectrum, labelled with an identifier according to Table 1. Filled symbols indicate measurement during beam-off periods. Diamonds refer to data from Ref. [12], triangles refer to data from Ref. [8], and squares and circles refer to the present data observed at 242.1 and 245.0 MeV mid-target beam energy, respectively. ‘n/a’ means ‘not applicable’, ‘escape’ denotes events with low-energy detection solely in the implantation DSSSD." data-ostiid="1332816"> <div class="biblio-image-tile-inner"> <small class="name">Figure 1<small class="pull-right text-muted" style="margin-right: .5em;top: 3px;position: relative;">(p. 22)</small><span class="d-none type">figure</span></small> <img class="img-responsive mt-0-5" alt="Figure 1" src="/biblio/1332816/image/000/240/0002402/1/t0017212.png"/> </div> </a> </td></tr> <tr class="biblio-image-tile "><td class="col-sm-3"> <a id="img-1332816-img17213" data-pos="" href="#modal-image" data-modal-toggle="true" class="biblio-image-tile-a ga-click-event apporder order title desc" data-imgid="1332816-img17213" data-lityx data-category="Extracted Images" data-label="biblio: image thumbnail" data-value="1332816-img17213" data-apporder="p. 23" data-order="2" data-imgid="1332816-img17213" data-imgsrc="/biblio/1332816/image/000/240/0002402/1/0017213.png" data-title="Figure 2" data-desc="(Colour online.) Two different decay scenarios of directly produced isotopes of element Z = 115 down to Rg, using previously published [7,8,12] and present data. Half-lives, T<sub>1/2</sub>, are provided with uncertainties. Particle-decay energies or ranges of decay energies are given in MeV, γ-ray energies in keV. See text for detailed discussions." data-ostiid="1332816"> <div class="biblio-image-tile-inner"> <small class="name">Figure 2<small class="pull-right text-muted" style="margin-right: .5em;top: 3px;position: relative;">(p. 23)</small><span class="d-none type">figure</span></small> <img class="img-responsive mt-0-5" alt="Figure 2" src="/biblio/1332816/image/000/240/0002402/1/t0017213.png"/> </div> </a> </td></tr> <tr class="biblio-image-tile "><td class="col-sm-3"> <a id="img-1332816-img17217" data-pos="" href="#modal-image" data-modal-toggle="true" class="biblio-image-tile-a ga-click-event apporder order title desc" data-imgid="1332816-img17217" data-lityx data-category="Extracted Images" data-label="biblio: image thumbnail" data-value="1332816-img17217" data-apporder="p. 24" data-order="3" data-imgid="1332816-img17217" data-imgsrc="/biblio/1332816/image/000/240/0002402/1/0017217.png" data-title="Figure 3" data-desc="Nuclear structure predictions of low-lying states in <sup>289</sup>115, <sup>285</sup>113, and <sup>281</sup>Rg. Panels (a) and (b) are based on two different macroscopic–microscopic approaches, MM1 [51,52] and MM2 [53]. Panel (c) originates from the self-consistent Skyrme energy density functional UNEDF1 [55,56]. The results from UNEDF1<sup>SO</sup> are similar to MM2 [56]. Proton single-particle states are labelled with their asymptotic Nilsson quantum numbers [Nn<sub>z</sub>Λ]Ω. Full (black) lines represent positive-parity states, dashed (blue) lines negative-parity states. Selected α-decay sequences among high-Ω positive-parity (α<sub>+</sub>) and low-Ω negative-parity (α<sub>−</sub>) states are indicated by shaded areas. ϵ<sub>2</sub>, β<sup>0</sup><sub>2</sub> , β<sub>2</sub>, respectively, denote predicted quadrupole deformations." data-ostiid="1332816"> <div class="biblio-image-tile-inner"> <small class="name">Figure 3<small class="pull-right text-muted" style="margin-right: .5em;top: 3px;position: relative;">(p. 24)</small><span class="d-none type">figure</span></small> <img class="img-responsive mt-0-5" alt="Figure 3" src="/biblio/1332816/image/000/240/0002402/1/t0017217.png"/> </div> </a> </td></tr> <tr class="biblio-image-tile "><td class="col-sm-3"> <a id="img-1332816-img17207" data-pos="" href="#modal-image" data-modal-toggle="true" class="biblio-image-tile-a ga-click-event apporder order title desc" data-imgid="1332816-img17207" data-lityx data-category="Extracted Images" data-label="biblio: image thumbnail" data-value="1332816-img17207" data-apporder="p. 25" data-order="4" data-imgid="1332816-img17207" data-imgsrc="/biblio/1332816/image/000/240/0002402/1/0017207.png" data-title="Figure 4" data-desc="Likelihood functions for τ if different number of decay chains N are measured to have an average lifetime $$ t\overline{t} $$ = $$ t\overline{t} $$<sub>1</sub> = 0.459 s. The (green) solid line corresponds to the τ likelihood function for decay step j = 1 in the data set of fourteen short chains. The functions are normalised such that the integral on the interval [0,inf] is one." data-ostiid="1332816"> <div class="biblio-image-tile-inner"> <small class="name">Figure 4<small class="pull-right text-muted" style="margin-right: .5em;top: 3px;position: relative;">(p. 25)</small><span class="d-none type">figure</span></small> <img class="img-responsive mt-0-5" alt="Figure 4" src="/biblio/1332816/image/000/240/0002402/1/t0017207.png"/> </div> </a> </td></tr> <tr class="biblio-image-tile tr-striped"><td class="col-sm-3"> <a id="img-1332816-img17208" data-pos="" href="#modal-image" data-modal-toggle="true" class="biblio-image-tile-a ga-click-event apporder order title desc" data-imgid="1332816-img17208" data-lityx data-category="Extracted Images" data-label="biblio: image thumbnail" data-value="1332816-img17208" data-apporder="p. 25" data-order="5" data-imgid="1332816-img17208" data-imgsrc="/biblio/1332816/image/000/240/0002402/1/0017208.png" data-title="Figure 5" data-desc="Relative probability for times t that originate from an exponential distribution with a decay constant that is estimated from a low-statistics measurement (black). The number of data points used for determination of the likelihood function of the decay constant τ is N = N<sub>1</sub> = 14 and the corresponding average lifetime is $$ t\overline{t} $$ = $$ t\overline{t} $$<sub>1</sub> = 0.459 s. The histogram is based on 10<sup>5</sup> simulated sets of chains. The analytic expression (Eq. (A.1)) for the corresponding probability density function (solid line, light green) is also shown. For reference, the probability density function for times from an exponential decay with a known decay constant is shown (solid line, dark blue). Probability density functions for cases where the lifetime was determined from N = 6 and N = 4 data points are also shown. The fourteen markers (circular, red) indicate the individual fourteen lifetimes t<sup>(1−14)</sup><sub>1</sub> in decay step j = 1 of the fourteen short chains and their corresponding FoM<sup>(1−14)</sup><sub>1</sub>." data-ostiid="1332816"> <div class="biblio-image-tile-inner"> <small class="name">Figure 5<small class="pull-right text-muted" style="margin-right: .5em;top: 3px;position: relative;">(p. 25)</small><span class="d-none type">figure</span></small> <img class="img-responsive mt-0-5" alt="Figure 5" src="/biblio/1332816/image/000/240/0002402/1/t0017208.png"/> </div> </a> </td></tr> <tr class="biblio-image-tile tr-striped"><td class="col-sm-3"> <a id="img-1332816-img17209" data-pos="" href="#modal-image" data-modal-toggle="true" class="biblio-image-tile-a ga-click-event apporder order title desc" data-imgid="1332816-img17209" data-lityx data-category="Extracted Images" data-label="biblio: image thumbnail" data-value="1332816-img17209" data-apporder="p. 26" data-order="6" data-imgid="1332816-img17209" data-imgsrc="/biblio/1332816/image/000/240/0002402/1/0017209.png" data-title="Figure 6" data-desc="Relative probability of FoM values: FoM for an entire data set of fourteen chains with similar characteristics as the experimental fourteen short chains (black), FoM<sub>geom</sub> for <em>one</em> of the recoil-α–α-SF chains (blue), and FoMg<sub>eom</sub> for <em>one</em> of the recoil-α-SF chains (red). A selection of the respective 5% limits (dashed lines) are also shown. The histograms are based on 10<sup>5</sup> simulated sets of chains." data-ostiid="1332816"> <div class="biblio-image-tile-inner"> <small class="name">Figure 6<small class="pull-right text-muted" style="margin-right: .5em;top: 3px;position: relative;">(p. 26)</small><span class="d-none type">figure</span></small> <img class="img-responsive mt-0-5" alt="Figure 6" src="/biblio/1332816/image/000/240/0002402/1/t0017209.png"/> </div> </a> </td></tr> <tr class="biblio-image-tile tr-striped"><td class="col-sm-3"> <a id="img-1332816-img17216" data-pos="" href="#modal-image" data-modal-toggle="true" class="biblio-image-tile-a ga-click-event apporder order title desc" data-imgid="1332816-img17216" data-lityx data-category="Extracted Images" data-label="biblio: image thumbnail" data-value="1332816-img17216" data-apporder="p. 27" data-order="7" data-imgid="1332816-img17216" data-imgsrc="/biblio/1332816/image/000/240/0002402/1/0017216.png" data-title="Table 1" data-desc="Mid-target laboratory-frame beam energies, energies of the implanted recoils E<sub>rec</sub>, α energies E<sub>1</sub>, E<sub>2</sub> and E<sub>3</sub>, together with the associated correlation times of recoil-α-SF and recoil-α– α-SF decay chains observed in the <sup>48</sup>Ca + <sup>243</sup>Am reaction. Entries in bold were recorded during beam-off periods. The number of γ rays detected in prompt coincidence with SF events, N<sub>γ</sub>(SF), is also specified. N<sub>random</sub> corresponds to the number of chains of a given type expected to arise from random background [37]. The decay characteristics of the four chains listed in Table III in Ref. [12], denoted D1–D4, are included for completeness, as well as the recoil-α(–α)-SF chains listed in Supp. Mat. Table 2 in Ref. [8] denoted B1–B3. Uncertainties in decay energies are given as σ<sub>E</sub>." data-ostiid="1332816"> <div class="biblio-image-tile-inner"> <small class="name">Table 1<small class="pull-right text-muted" style="margin-right: .5em;top: 3px;position: relative;">(p. 27)</small><span class="d-none type">table</span></small> <img class="img-responsive mt-0-5" alt="Table 1" src="/biblio/1332816/image/000/240/0002402/1/t0017216.png"/> </div> </a> </td></tr> <tr class="biblio-image-tile tr-striped"><td class="col-sm-3"> <a id="img-1332816-img17214" data-pos="" href="#modal-image" data-modal-toggle="true" class="biblio-image-tile-a ga-click-event apporder order title desc" data-imgid="1332816-img17214" data-lityx data-category="Extracted Images" data-label="biblio: image thumbnail" data-value="1332816-img17214" data-apporder="p. 28" data-order="8" data-imgid="1332816-img17214" data-imgsrc="/biblio/1332816/image/000/240/0002402/1/0017214.png" data-title="Table 2" data-desc="Overview of analyses according to Ref. [39] of 96 five-α chains associated with <sup>288</sup>115 at different beam energies [7,8,12]. σ<sub>Θexp</sub> refers to the standard deviation of the logarithms of lifetimes, and [σ<sub>Θ,low</sub>, σ<sub>Θ,high</sub>] is the corresponding 90% confidence interval for the standard deviation. The letter H (L) highlights that σ<sub>Θexp</sub> is outside the respective 90% confidence interval on the high (low) side." data-ostiid="1332816"> <div class="biblio-image-tile-inner"> <small class="name">Table 2<small class="pull-right text-muted" style="margin-right: .5em;top: 3px;position: relative;">(p. 28)</small><span class="d-none type">table</span></small> <img class="img-responsive mt-0-5" alt="Table 2" src="/biblio/1332816/image/000/240/0002402/1/t0017214.png"/> </div> </a> </td></tr> <tr class="biblio-image-tile "><td class="col-sm-3"> <a id="img-1332816-img17211" data-pos="" href="#modal-image" data-modal-toggle="true" class="biblio-image-tile-a ga-click-event apporder order title desc" data-imgid="1332816-img17211" data-lityx data-category="Extracted Images" data-label="biblio: image thumbnail" data-value="1332816-img17211" data-apporder="p. 29" data-order="9" data-imgid="1332816-img17211" data-imgsrc="/biblio/1332816/image/000/240/0002402/1/0017211.png" data-title="Table 3" data-desc="Half-lives derived from the correlation times of decays of isotopes of Rg, Z = 113 and Z = 115. Results and confidence intervals of a statistical test proposed in Ref. [39] are provided for each half-life analysis. The four columns describe different combinations of the decay data from recoil-α-SF and recoil-α–α-SF events detailed in Table 1, and data related to the 3n reaction channel in Refs. [7,8,12,31]. σ<sub>Θexp</sub> refers to the standard deviation of the logarithms of lifetimes, and [σ<sub>Θ,low</sub>, σ<sub>Θ,high</sub>] is the corresponding 90% confidence interval for the standard deviation. The letter H (L) highlights that σ<sub>Θexp</sub> is outside the respective 90% confidence interval on the high (low) side." data-ostiid="1332816"> <div class="biblio-image-tile-inner"> <small class="name">Table 3<small class="pull-right text-muted" style="margin-right: .5em;top: 3px;position: relative;">(p. 29)</small><span class="d-none type">table</span></small> <img class="img-responsive mt-0-5" alt="Table 3" src="/biblio/1332816/image/000/240/0002402/1/t0017211.png"/> </div> </a> </td></tr> <tr class="biblio-image-tile "><td class="col-sm-3"> <a id="img-1332816-img17210" data-pos="" href="#modal-image" data-modal-toggle="true" class="biblio-image-tile-a ga-click-event apporder order title desc" data-imgid="1332816-img17210" data-lityx data-category="Extracted Images" data-label="biblio: image thumbnail" data-value="1332816-img17210" data-apporder="p. 30" data-order="10" data-imgid="1332816-img17210" data-imgsrc="/biblio/1332816/image/000/240/0002402/1/0017210.png" data-title="Table 4" data-desc="FoM<sub>j</sub> and FoM<sub>geom</sub> for each of the short decay chains, and FoM for the entire set of fourteen chains when they are compared with a reference formed by the chains themselves (see text for details)." data-ostiid="1332816"> <div class="biblio-image-tile-inner"> <small class="name">Table 4<small class="pull-right text-muted" style="margin-right: .5em;top: 3px;position: relative;">(p. 30)</small><span class="d-none type">table</span></small> <img class="img-responsive mt-0-5" alt="Table 4" src="/biblio/1332816/image/000/240/0002402/1/t0017210.png"/> </div> </a> </td></tr> <tr class="biblio-image-tile "><td class="col-sm-3"> <a id="img-1332816-img17218" data-pos="" href="#modal-image" data-modal-toggle="true" class="biblio-image-tile-a ga-click-event apporder order title desc" data-imgid="1332816-img17218" data-lityx data-category="Extracted Images" data-label="biblio: image thumbnail" data-value="1332816-img17218" data-apporder="p. 31" data-order="11" data-imgid="1332816-img17218" data-imgsrc="/biblio/1332816/image/000/240/0002402/1/0017218.png" data-title="Table 5" data-desc="In the first row, FoM and half-lives T<sup>i</sup><sub>1/2</sub> for decay steps i = 1, 2, 3 for the set of fourteen short chains are presented. In the following rows, one chain at the time is excluded from the set of fourteen chains. The second column relate to the FoM for the set of thirteen remaining short chains. FoM for sets where a recoil-α–α-SF chain is excluded should be in the confidence interval [0.178, 0.256]. The FoM indexed with * (a recoil-α-SF chain is excluded) should be in the confidence interval [0.179, 0.255]. The third column shows FoM<sub>geom</sub> for the <em>excluded chain</em> when its characteristics is compared with the external reference formed by the remaining thirteen chains. Columns four, five, and six, are the half-lives T<sup>j</sup><sub>1/2</sub> for decay steps i = 1, 2, 3 for the respective set of thirteen chains. See text for more details." data-ostiid="1332816"> <div class="biblio-image-tile-inner"> <small class="name">Table 5<small class="pull-right text-muted" style="margin-right: .5em;top: 3px;position: relative;">(p. 31)</small><span class="d-none type">table</span></small> <img class="img-responsive mt-0-5" alt="Table 5" src="/biblio/1332816/image/000/240/0002402/1/t0017218.png"/> </div> </a> </td></tr> <tr class="biblio-image-tile "><td class="col-sm-3"> <a id="img-1332816-img17215" data-pos="last" href="#modal-image" data-modal-toggle="true" class="biblio-image-tile-a ga-click-event apporder order title desc" data-imgid="1332816-img17215" data-lityx data-category="Extracted Images" data-label="biblio: image thumbnail" data-value="1332816-img17215" data-apporder="p. 32" data-order="12" data-imgid="1332816-img17215" data-imgsrc="/biblio/1332816/image/000/240/0002402/1/0017215.png" data-title="Table 6" data-desc="Number of chains and production cross sections, σ<sub>prod</sub>, of <sup>287-289</sup>115 derived for two decay scenarios (cf. Fig. 2) from the thirty decay chains observed in the TASISpec experiment (chains T1–T7 and 23 five-α long chains [7]). The observation of a single decay chain relates to a production cross section of σ = 0.93(12) and 0.51(7) pb for mid-target beam energies 242.1 and 245.0 MeV, respectively. The systematic uncertainty accounts for uncertainties in beam integrals, target thickness, transport efficiency, and identification probability. Standard deviations of systematic uncertainties are given together with statistical uncertainties using a 68% confidence level [37]." data-ostiid="1332816"> <div class="biblio-image-tile-inner"> <small class="name">Table 6<small class="pull-right text-muted" style="margin-right: .5em;top: 3px;position: relative;">(p. 32)</small><span class="d-none type">table</span></small> <img class="img-responsive mt-0-5" alt="Table 6" src="/biblio/1332816/image/000/240/0002402/1/t0017215.png"/> </div> </a> </td></tr> </tbody></table> </div> </div> </section> <div id="modal-image" class="modal"> <div class="modal-content"> <div class="modal-header"> <span class="close" data-modal-close="true">×</span> <header id="modal-image_label" style="margin:0px;">Image title</header> </div> <div id="modal-image_body" class="modal-body"> </div> </div> </div> <hr class="mt-2 mb-2"/> <section id="section-similar" class="tab-content-sec osti-curated biblio-section section-scroll" style="scroll-margin-top:110px;"> <div class="row"> <div class="col-8" style="padding-right:40px;"> <h2 class="abstract">Similar Records</h2> <div class="" style="line-height:1.6rem;"> <a href="/biblio/1923574" target="_blank">Spectroscopy along flerovium decay chains. 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