β-Delayed One and Two Neutron Emission Probabilities Southeast of 132Sn and the Odd-Even Systematics in r-Process Nuclide Abundances

Phong, V.  H.; Nishimura, S.; Lorusso, G.; Davinson, T.; Estrade, A.; Hall, O.; Kawano, T.; Liu, J.; Montes, F.; Nishimura, N.; Grzywacz, Robert Kazimierz; Rykaczewski, Krzysztof P.; Agramunt, J.; Ahn, D. S.; Algora, A.; Allmond, James M.; Baba, H.; Bae, S.; Brewer, Nathan T.; Bruno, C. G.; Caballero-Folch, R.; Calviño, F.; Coleman-Smith, P. J.; Cortes, G.; Dillmann, I.; Domingo-Pardo, C.; Fijalkowska, A.; Fukuda, N.; Go, S.; Griffin, C. J.; Ha, J.; Harkness-Brennan, L. J.; Isobe, T.; Kahl, D.; Khiem, L. H.; Kiss, G. G.; Korgul, A.; Kubono, S.; Labiche, M.; Lazarus, I.; Liang, J.; Liu, Z.; Matsui, K.; Miernik, K.; Moon, B.; Morales, A. I.; Morrall, P.; Nepal, N.; Page, R. D.; Piersa-Siłkowska, M.; Pucknell, V. F. E.; Rasco, B. Charlie; Rubio, B.; Sakurai, H.; Shimizu, Y.; Stracener, Dan W.; Sumikama, T.; Suzuki, H.; Tain, J.  L.; Takeda, H.; Tarifeño-Saldivia, A.; Tolosa-Delgado, A.; Wolińska-Cichocka, M.; Woods, P. J.; Yokoyama, R.

doi:10.1103/physrevlett.129.172701

Title: β-Delayed One and Two Neutron Emission Probabilities Southeast of ¹³²Sn and the Odd-Even Systematics in r-Process Nuclide Abundances

Abstract

Here, the β-delayed one- and two-neutron emission probabilities (P_1n and P_2n) of 20 neutron-rich nuclei with N≥82 have been measured at the RIBF facility of the RIKEN Nishina Center. P_1n of ^130,131Ag, ^133,134Cd, ^135,136In, and ^138,139Sn were determined for the first time, and stringent upper limits were placed on P2n for nearly all cases. β-delayed two-neutron emission (β2n) was unambiguously identified in ¹³³Cd and ^135,136In, and their P_2n were measured. Weak β2n was also detected from ^137,138Sn. Our results highlight the effect of the N=82 and Z=50 shell closures on β-delayed neutron emission probability and provide stringent benchmarks for newly developed macroscopic-microscopic and self-consistent global models with the inclusion of a statistical treatment of neutron and γ emission. The impact of our measurements on r-process nucleosynthesis was studied in a neutron star merger scenario. Our P_1n and P_2n have a direct impact on the odd-even staggering of the final abundance, improving the agreement between calculated and observed Solar System abundances. The odd isotope fraction of Ba in r-process-enhanced (r-II) stars is also better reproduced using our new data.

Authors:

^[1];

^[2]; Lorusso, G. ^[3]; Davinson, T. ^[4]; Estrade, A. ^[5]; Hall, O. ^[4]; Kawano, T. ^[6]; Liu, J. ^[7]; Montes, F. ^[8]; Nishimura, N. ^[2];

^[9];

^[10]; Agramunt, J. ^[11]; Ahn, D. S. ^[12]; Algora, A. ^[11];

^[10]; Baba, H. ^[2]; Bae, S. ^[13]; Brewer, Nathan T. ^[14]; Bruno, C. G. ^[4] more »

Inst. of Physical and Chemical Research (RIKEN), Wako (Japan); Vietnam National University, Hanoi (Vietnam)
Inst. of Physical and Chemical Research (RIKEN), Wako (Japan)
Inst. of Physical and Chemical Research (RIKEN), Wako (Japan); National Physical Lab., Teddington (United Kingdom); Univ. of Surrey, Guildford (United Kingdom)
Univ. of Edinburgh, Scotland (United Kingdom)
Central Michigan Univ., Mount Pleasant, MI (United States)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Inst. of Physical and Chemical Research (RIKEN), Wako (Japan); Univ. of Hong Kong, Pokfulam (Hong Kong)
Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab.
Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Spanish National Research Council (CSIC), Valencia (Spain); Univ. of Valencia (Spain)
Inst. of Physical and Chemical Research (RIKEN), Wako (Japan); Inst. of Basic Science, Daejeon (Korea, Republic of)
Inst. of Basic Science, Daejeon (Korea, Republic of)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
TRIUMF, Vancouver, BC (Canada)
Univ. Politecnica de Catalunya (Spain)
Science and Technology Facilities Council (STFC), Daresbury (United Kingdom). Daresbury Lab.
TRIUMF, Vancouver, BC (Canada); Univ. of Victoria, BC (Canada)
Univ. of Warsaw (Poland)
Inst. of Physical and Chemical Research (RIKEN), Wako (Japan); Seoul National Univ. (Korea, Republic of)
Univ. of Liverpool (United Kingdom)
Univ. of Edinburgh, Scotland (United Kingdom); Horia Hulubei National Institute for Physics and Nuclear Engineering, Magurele (Romania)
Vietnam Academy of Science and Technology, Hanoi (Vietnam)
Inst. of Physical and Chemical Research (RIKEN), Wako (Japan); Institute for Nuclear Research (Atomki), Debrecen (Hungary)
McMaster Univ., Hamilton, ON (Canada)
Chinese Academy of Sciences (CAS), Lanzhou (China); University of Chinese Academy of Sciences, Beijing (China)
Inst. of Physical and Chemical Research (RIKEN), Wako (Japan); Univ. of Tokyo (Japan)
Univ. Politecnica de Catalunya (Spain); Spanish National Research Council (CSIC), Valencia (Spain); Univ. of Valencia (Spain)
Univ. of Tennessee, Knoxville, TN (United States); Univ. of Tokyo (Japan); Inst. of Physical and Chemical Research (RIKEN), Wako (Japan)

Publication Date:: Tue Oct 18 00:00:00 EDT 2022

Research Org.:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Nuclear Physics (NP); USDOE National Nuclear Security Administration (NNSA); National Science Foundation (NSF); Japan Society for the Promotion of Science (JSPS); Spanish Ministry of Economy, Industry and Competitiveness; Spanish Ministry of Science, Innovation and Universities; Generalitat Valenciana; Science and Technology Facilities Council (STFC) (United Kingdom); Korea Institute for Basic Science; Polish National Science Centre (NCN)

OSTI Identifier:: 1895225

Alternate Identifier(s):: OSTI ID: 1893957

Grant/Contract Number:: AC05-00OR22725; 89233218CNA000001; FG02-96ER40983; NA0002132; 14F04808; 17H06090; 19H00693; 20H05648; 21H01087; 25247045; 19340074; PHY-1430152; PHY-1565546; PHY-1714153; FPA2014-52823-C2-1-P,; FPA2014-52823-C2-2-P; FPA2017-83946-C2-1-P; FPA2017-83946-C2-2-P; PID2019-104714GBC21; PID2019-104714GB-C22; PROMETEO/2019/007; ST/N00244X/1; ST/P004598/1; ST/V001027/1; IBS-R031-Y1; 2020/36/T/ST2/00547; 2019/33/N/ST2/03023; L1955; IBS-R031-D1

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review Letters

Additional Journal Information:: Journal Volume: 129; Journal Issue: 17; Journal ID: ISSN 0031-9007

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats


                    Phong, V.  H., Nishimura, S., Lorusso, G., Davinson, T., Estrade, A., Hall, O., Kawano, T., Liu, J., Montes, F., Nishimura, N., Grzywacz, Robert Kazimierz, Rykaczewski, Krzysztof P., Agramunt, J., Ahn, D. S., Algora, A., Allmond, James M., Baba, H., Bae, S., Brewer, Nathan T., Bruno, C. G., Caballero-Folch, R., Calviño, F., Coleman-Smith, P. J., Cortes, G., Dillmann, I., Domingo-Pardo, C., Fijalkowska, A., Fukuda, N., Go, S., Griffin, C. J., Ha, J., Harkness-Brennan, L. J., Isobe, T., Kahl, D., Khiem, L. H., Kiss, G. G., Korgul, A., Kubono, S., Labiche, M., Lazarus, I., Liang, J., Liu, Z., Matsui, K., Miernik, K., Moon, B., Morales, A. I., Morrall, P., Nepal, N., Page, R. D., Piersa-Siłkowska, M., Pucknell, V. F. E., Rasco, B. Charlie, Rubio, B., Sakurai, H., Shimizu, Y., Stracener, Dan W., Sumikama, T., Suzuki, H., Tain, J.  L., Takeda, H., Tarifeño-Saldivia, A., Tolosa-Delgado, A., Wolińska-Cichocka, M., Woods, P. J., and Yokoyama, R. β-Delayed One and Two Neutron Emission Probabilities Southeast of 132Sn and the Odd-Even Systematics in r-Process Nuclide Abundances.  United States: N. p., 2022. 
Web.  doi:10.1103/physrevlett.129.172701.

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                    Phong, V.  H., Nishimura, S., Lorusso, G., Davinson, T., Estrade, A., Hall, O., Kawano, T., Liu, J., Montes, F., Nishimura, N., Grzywacz, Robert Kazimierz, Rykaczewski, Krzysztof P., Agramunt, J., Ahn, D. S., Algora, A., Allmond, James M., Baba, H., Bae, S., Brewer, Nathan T., Bruno, C. G., Caballero-Folch, R., Calviño, F., Coleman-Smith, P. J., Cortes, G., Dillmann, I., Domingo-Pardo, C., Fijalkowska, A., Fukuda, N., Go, S., Griffin, C. J., Ha, J., Harkness-Brennan, L. J., Isobe, T., Kahl, D., Khiem, L. H., Kiss, G. G., Korgul, A., Kubono, S., Labiche, M., Lazarus, I., Liang, J., Liu, Z., Matsui, K., Miernik, K., Moon, B., Morales, A. I., Morrall, P., Nepal, N., Page, R. D., Piersa-Siłkowska, M., Pucknell, V. F. E., Rasco, B. Charlie, Rubio, B., Sakurai, H., Shimizu, Y., Stracener, Dan W., Sumikama, T., Suzuki, H., Tain, J.  L., Takeda, H., Tarifeño-Saldivia, A., Tolosa-Delgado, A., Wolińska-Cichocka, M., Woods, P. J., & Yokoyama, R. β-Delayed One and Two Neutron Emission Probabilities Southeast of 132Sn and the Odd-Even Systematics in r-Process Nuclide Abundances.  United States.  https://doi.org/10.1103/physrevlett.129.172701

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                    Phong, V.  H., Nishimura, S., Lorusso, G., Davinson, T., Estrade, A., Hall, O., Kawano, T., Liu, J., Montes, F., Nishimura, N., Grzywacz, Robert Kazimierz, Rykaczewski, Krzysztof P., Agramunt, J., Ahn, D. S., Algora, A., Allmond, James M., Baba, H., Bae, S., Brewer, Nathan T., Bruno, C. G., Caballero-Folch, R., Calviño, F., Coleman-Smith, P. J., Cortes, G., Dillmann, I., Domingo-Pardo, C., Fijalkowska, A., Fukuda, N., Go, S., Griffin, C. J., Ha, J., Harkness-Brennan, L. J., Isobe, T., Kahl, D., Khiem, L. H., Kiss, G. G., Korgul, A., Kubono, S., Labiche, M., Lazarus, I., Liang, J., Liu, Z., Matsui, K., Miernik, K., Moon, B., Morales, A. I., Morrall, P., Nepal, N., Page, R. D., Piersa-Siłkowska, M., Pucknell, V. F. E., Rasco, B. Charlie, Rubio, B., Sakurai, H., Shimizu, Y., Stracener, Dan W., Sumikama, T., Suzuki, H., Tain, J.  L., Takeda, H., Tarifeño-Saldivia, A., Tolosa-Delgado, A., Wolińska-Cichocka, M., Woods, P. J., and Yokoyama, R. Tue .  
"β-Delayed One and Two Neutron Emission Probabilities Southeast of 132Sn and the Odd-Even Systematics in r-Process Nuclide Abundances".  United States.  https://doi.org/10.1103/physrevlett.129.172701.  https://www.osti.gov/servlets/purl/1895225.

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@article{osti_1895225,

  title        = {β-Delayed One and Two Neutron Emission Probabilities Southeast of 132Sn and the Odd-Even Systematics in r-Process Nuclide Abundances},

  author       = {Phong, V.  H. and Nishimura, S. and Lorusso, G. and Davinson, T. and Estrade, A. and Hall, O. and Kawano, T. and Liu, J. and Montes, F. and Nishimura, N. and Grzywacz, Robert Kazimierz and Rykaczewski, Krzysztof P. and Agramunt, J. and Ahn, D. S. and Algora, A. and Allmond, James M. and Baba, H. and Bae, S. and Brewer, Nathan T. and Bruno, C. G. and Caballero-Folch, R. and Calviño, F. and Coleman-Smith, P. J. and Cortes, G. and Dillmann, I. and Domingo-Pardo, C. and Fijalkowska, A. and Fukuda, N. and Go, S. and Griffin, C. J. and Ha, J. and Harkness-Brennan, L. J. and Isobe, T. and Kahl, D. and Khiem, L. H. and Kiss, G. G. and Korgul, A. and Kubono, S. and Labiche, M. and Lazarus, I. and Liang, J. and Liu, Z. and Matsui, K. and Miernik, K. and Moon, B. and Morales, A. I. and Morrall, P. and Nepal, N. and Page, R. D. and Piersa-Siłkowska, M. and Pucknell, V. F. E. and Rasco, B. Charlie and Rubio, B. and Sakurai, H. and Shimizu, Y. and Stracener, Dan W. and Sumikama, T. and Suzuki, H. and Tain, J.  L. and Takeda, H. and Tarifeño-Saldivia, A. and Tolosa-Delgado, A. and Wolińska-Cichocka, M. and Woods, P. J. and Yokoyama, R.},

  abstractNote = {Here, the β-delayed one- and two-neutron emission probabilities (P1n and P2n) of 20 neutron-rich nuclei with N≥82 have been measured at the RIBF facility of the RIKEN Nishina Center. P1n of 130,131Ag, 133,134Cd, 135,136In, and 138,139Sn were determined for the first time, and stringent upper limits were placed on P2n for nearly all cases. β-delayed two-neutron emission (β2n) was unambiguously identified in 133Cd and 135,136In, and their P2n were measured. Weak β2n was also detected from 137,138Sn. Our results highlight the effect of the N=82 and Z=50 shell closures on β-delayed neutron emission probability and provide stringent benchmarks for newly developed macroscopic-microscopic and self-consistent global models with the inclusion of a statistical treatment of neutron and γ emission. The impact of our measurements on r-process nucleosynthesis was studied in a neutron star merger scenario. Our P1n and P2n have a direct impact on the odd-even staggering of the final abundance, improving the agreement between calculated and observed Solar System abundances. The odd isotope fraction of Ba in r-process-enhanced (r-II) stars is also better reproduced using our new data.},

  doi          = {10.1103/physrevlett.129.172701},

  journal      = {Physical Review Letters},

  number       = 17,

  volume       = 129,

  place        = {United States},

  year         = {Tue Oct 18 00:00:00 EDT 2022},

  month        = {Tue Oct 18 00:00:00 EDT 2022}

}

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Abstract

Citation Formats

The Odd Isotope Fractions of Barium in the Strongly r-process-enhanced (r-II) Stars journal, February 2018

Large-scale evaluation of β -decay rates of r -process nuclei with the inclusion of first-forbidden transitions journal, February 2016

β -Decay Half-Lives of 110 Neutron-Rich Nuclei across the N = 82 Shell Gap: Implications for the Mechanism and Universality of the Astrophysical r Process journal, May 2015

Strong one-neutron emission from two-neutron unbound states in β decays of the r -process nuclei Ga 86 , 87 journal, September 2019

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The impact of individual nuclear properties on r -process nucleosynthesis journal, January 2016

Nuclear ground-state masses and deformations: FRDM(2012) journal, May 2016

Large β -Delayed One and Two Neutron Emission Rates in the Decay of Ga 86 journal, September 2013

β decay of In 132 and spectroscopy of Sn 132 and Sb 131 with the GRIFFIN spectrometer journal, August 2020

Observation of a μ s isomer in In 85 49 134 : Proton-neutron coupling “southeast” of Sn 82 50 132 journal, July 2019

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β decay and β -delayed neutron decay of the N = 82 nucleus In 82 49 131 journal, April 2019

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Title: β-Delayed One and Two Neutron Emission Probabilities Southeast of ¹³²Sn and the Odd-Even Systematics in r-Process Nuclide Abundances

The Odd Isotope Fractions of Barium in the Strongly r-process-enhanced (r-II) Stars
journal, February 2018

Large-scale evaluation of $β$ -decay rates of $r$ -process nuclei with the inclusion of first-forbidden transitions
journal, February 2016

$β$ -Decay Half-Lives of 110 Neutron-Rich Nuclei across the $N = 82$ Shell Gap: Implications for the Mechanism and Universality of the Astrophysical $r$ Process
journal, May 2015

Strong one-neutron emission from two-neutron unbound states in $β$ decays of the $r$ -process nuclei ${}^{86, 87}{Ga}$
journal, September 2019

The R-process Alliance: A Nearly Complete R-process Abundance Template Derived from Ultraviolet Spectroscopy of the R-process-enhanced Metal-poor Star HD 222925*
journal, June 2022

DETECTION OF THE SECOND r -PROCESS PEAK ELEMENT TELLURIUM IN METAL-POOR STARS,
journal, February 2012

Commissioning of the BRIKEN detector for the measurement of very exotic $β$ -delayed neutron emitters
journal, May 2019

Calculation of delayed-neutron energy spectra in a quasiparticle random-phase approximation–Hauser-Feshbach model
journal, November 2008

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journal, September 2000

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journal, June 2010

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journal, August 2000

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journal, April 2017

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journal, January 2016

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journal, May 2016

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journal, September 2013

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journal, August 2020

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journal, July 2019

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journal, July 2020

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journal, January 1993

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journal, April 2019

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journal, March 2021

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journal, October 1957

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journal, December 2018

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journal, February 2021

Postmerger Mass Ejection of Low-mass Binary Neutron Stars
journal, September 2020

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journal, November 1999

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journal, December 2016

The all-sky medium energy gamma-ray observatory
journal, November 2017

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journal, February 2021

First β -decay spectroscopy of In135 and new β -decay branches of In134
journal, October 2021

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journal, July 2015

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journal, May 2010

$β$ -delayed multiple-neutron emission in the effective density model
journal, November 2014

RELATIVE CONTRIBUTIONS OF THE WEAK, MAIN, AND FISSION-RECYCLING r -PROCESS
journal, January 2016

DETECTION OF ELEMENTS AT ALL THREE r -PROCESS PEAKS IN THE METAL-POOR STAR HD 160617 ^, ^,
journal, April 2012

Conceptual design of a hybrid neutron-gamma detector for study of β-delayed neutrons at the RIB facility of RIKEN
journal, April 2017

Neutron-Capture Elements in the Early Galaxy
journal, September 2008

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journal, July 2021

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journal, September 2021

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journal, February 2002

β -delayed neutron-emission and fission calculations within relativistic quasiparticle random-phase approximation and a statistical model
journal, October 2021

Decay of the $r$ -process nuclides $^{137, 138, 139}$ Sb, and the $A = 130$ solar $r$ -process abundance peak
journal, December 2011

SkyNet: A Modular Nuclear Reaction Network Library
journal, December 2017

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journal, October 1956

The odd-isotope fractions of barium in CEMP-r/sstar HE 0338-3945 andr-II star CS 31082-001
journal, September 2016

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journal, May 2021

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journal, December 2015

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journal, August 1975

New calculations of gross $β$ -decay properties for astrophysical applications: Speeding-up the classical r process
journal, May 2003

The R-Process Alliance: Abundance Universality among Some Elements at and between the First and Second R-Process Peaks*
journal, September 2022

Nucleosynthesis in the Early Galaxy
journal, December 2007

NEW HUBBLE SPACE TELESCOPE OBSERVATIONS OF HEAVY ELEMENTS IN FOUR METAL-POOR STARS
journal, November 2012

BigRIPS separator and ZeroDegree spectrometer at RIKEN RI Beam Factory
journal, January 2012

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conference, February 2017

Characterization of a neutron–beta counting system with beta-delayed neutron emitters
journal, January 2016

The ORNL analysis technique for extracting $β$ -delayed multi-neutron branching ratios with BRIKEN
journal, December 2018

The AME 2020 atomic mass evaluation (II). Tables, graphs and references*
journal, March 2021