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Title: Enhancement of α -particle formation near Sn 100

Abstract

The superfluid tunneling model is applied to the calculation of ground-state-to-ground-state α decay in the even-even neutron-deficient Te-Ba nuclei. We show that there is a larger α-particle formation probability in nuclei of this region above 100Sn when compared to analogous nuclei above 208Pb. This is consistent with the expected systematic variation of the pair gap Δ as a function of mass number. Finally, the recent experimental data on the α decay of the N=Z nuclei 104Te and 108Xe are shown to leave open the possibility of enhanced α-particle formation involving nucleon correlations beyond the standard treatment of like-nucleon pairing, which is the mechanism suggested as underlying "superallowed" α decay.

Authors:
 [1];  [1];  [1];  [1]; ORCiD logo [2]; ORCiD logo [2];  [1];  [1];  [1];  [1]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Lund Univ. (Sweden)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP); Knut and Alice Wallenberg Foundation
OSTI Identifier:
1616983
Alternate Identifier(s):
OSTI ID: 1606617
Grant/Contract Number:  
AC02-05CH11231; KAW 2015.0021
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 101; Journal Issue: 3; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; alpha decay; nuclear structure & decays; 90 < A < 149

Citation Formats

Clark, R. M., Macchiavelli, A. O., Crawford, H. L., Fallon, P., Rudolph, D., Såmark-Roth, A., Campbell, C. M., Cromaz, M., Morse, C., and Santamaria, C.. Enhancement of α -particle formation near Sn100. United States: N. p., 2020. Web. https://doi.org/10.1103/PhysRevC.101.034313.
Clark, R. M., Macchiavelli, A. O., Crawford, H. L., Fallon, P., Rudolph, D., Såmark-Roth, A., Campbell, C. M., Cromaz, M., Morse, C., & Santamaria, C.. Enhancement of α -particle formation near Sn100. United States. https://doi.org/10.1103/PhysRevC.101.034313
Clark, R. M., Macchiavelli, A. O., Crawford, H. L., Fallon, P., Rudolph, D., Såmark-Roth, A., Campbell, C. M., Cromaz, M., Morse, C., and Santamaria, C.. Fri . "Enhancement of α -particle formation near Sn100". United States. https://doi.org/10.1103/PhysRevC.101.034313. https://www.osti.gov/servlets/purl/1616983.
@article{osti_1616983,
title = {Enhancement of α -particle formation near Sn100},
author = {Clark, R. M. and Macchiavelli, A. O. and Crawford, H. L. and Fallon, P. and Rudolph, D. and Såmark-Roth, A. and Campbell, C. M. and Cromaz, M. and Morse, C. and Santamaria, C.},
abstractNote = {The superfluid tunneling model is applied to the calculation of ground-state-to-ground-state α decay in the even-even neutron-deficient Te-Ba nuclei. We show that there is a larger α-particle formation probability in nuclei of this region above 100Sn when compared to analogous nuclei above 208Pb. This is consistent with the expected systematic variation of the pair gap Δ as a function of mass number. Finally, the recent experimental data on the α decay of the N=Z nuclei 104Te and 108Xe are shown to leave open the possibility of enhanced α-particle formation involving nucleon correlations beyond the standard treatment of like-nucleon pairing, which is the mechanism suggested as underlying "superallowed" α decay.},
doi = {10.1103/PhysRevC.101.034313},
journal = {Physical Review C},
number = 3,
volume = 101,
place = {United States},
year = {2020},
month = {3}
}

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Cited by: 2 works
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Works referenced in this record:

Measurements of 110Xe and 106Te decay half-lives
journal, December 2004


Alpha radioactivity above Sn 100 including the decay of I 108
journal, June 1994


Alpha-transfer reactions and the pairing-vibration model
journal, October 1977


Microscopic theory of cluster radioactivity
journal, February 1998


Exotic radioactivity as a superfluid tunneling phenomenon
journal, February 1988


Alpha decay studies of tellurium, iodine, xenon and cesium isotopes
journal, September 1979


α decay of Te 105
journal, June 2006


Nuclear Data Sheets for A = 106
journal, April 2008


Alpha decay of 114Ba
journal, April 2002


Direct observation of the Ba 114 Xe 110 Te 106 Sn 102 triple α -decay chain using position and time correlations
journal, August 2016


New Region of Alpha Radioactivity
journal, January 1965


Wave Mechanics and Radioactive Disintegration
journal, September 1928

  • Gurney, Ronald W.; Condon, Edw. U.
  • Nature, Vol. 122, Issue 3073
  • DOI: 10.1038/122439a0

Superallowed α Decay to Doubly Magic Sn 100
journal, October 2018


α decay of high- K isomers in Ds 270 and Hs 266 in a superfluid tunneling model
journal, February 2018


Is there neutron-proton pairing in medium heavy nuclei?
journal, May 1984


α -decay calculations of heavy nuclei using an effective Skyrme interaction
journal, December 2013


Effect of the reduced pairing interaction on α -decay half-lives of multi-quasiparticle isomeric states
journal, October 2014


Large-amplitude motion in superfluid fermi droplets
journal, January 1990


Proton and alpha radioactivity of very neutron deficient Te, I, Xe and Cs isotopes, studied after electrostatic separation
journal, June 1991

  • Heine, F.; Faestermann, T.; Gillitzer, A.
  • Zeitschrift f�r Physik A Hadrons and Nuclei, Vol. 340, Issue 2
  • DOI: 10.1007/BF01303837

Alpha decay of neutron-deficient isotopes with 52 ≦ Z ≦ 55, including the new isotopes 106Te (T12 = 60 μs) and 110Xe
journal, September 1981


Empirical pairing gaps, shell effects, and di-neutron spatial correlation in neutron-rich nuclei
journal, August 2015


Calculation of the absolute lifetimes of the variety of decay modes of U 234
journal, May 1989


α decay in the complex-energy shell model
journal, September 2012


Discovery of Xe 109 and Te 105 : Superallowed α Decay near Doubly Magic Sn 100
journal, August 2006


Microscopic description of superallowed α -decay transitions
journal, May 2016


Recent developments in radioactive charged-particle emissions and related phenomena
journal, March 2019


Is there np pairing in N = Z nuclei?
journal, March 2000


New look at α decay of heavy nuclei
journal, December 1990


Analytic expressions for alpha-decay half-lives and potential barriers
journal, December 2010


α decay of high-spin isomers in N = 84 isotones
journal, February 2019


A Formulation of the Theory of Alpha-particle Decay from Time-independent Equations
journal, September 1954


Zur Quantentheorie des Atomkernes
journal, March 1928


Critical-Point Description of the Transition from Vibrational to Rotational Regimes in the Pairing Phase
journal, January 2006


Overview of neutron–proton pairing
journal, September 2014


Proton–neutron pairing in N = Z nuclei: Quartetting versus pair condensation
journal, December 2015