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Enhancement of α-particle formation near 100Sn

Clark, R. M. ; Macchiavelli, A. O. ; Crawford, H. L. ; Fallon, P. ; Rudolph, D. LU ; Såmark-Roth, A. LU ; Campbell, C. M. ; Cromaz, M. ; Morse, C. and Santamaria, C. (2020) In Physical Review C 101(3).
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. 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... (More)
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. 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. (Less)
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author
; ; ; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
alpha decay, superfluid tunneling model
in
Physical Review C
volume
101
issue
3
article number
034313
pages
6 pages
publisher
American Physical Society
external identifiers
  • scopus:85083508229
ISSN
2469-9985
DOI
10.1103/PhysRevC.101.034313
project
Characterization of New Superheavy Elements
language
English
LU publication?
yes
id
31d859cb-dba5-4218-9097-bf405f852048
date added to LUP
2020-04-08 14:30:11
date last changed
2020-10-07 06:56:52
@article{31d859cb-dba5-4218-9097-bf405f852048,
  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 <sup>100</sup>Sn when compared to analogous nuclei above <sup>208</sup>Pb. This is consistent with the expected systematic variation of the pair gap Δ as a function of mass number. The recent experimental data on the α decay of the <i>N </i>=<i> Z</i> nuclei <sup>104</sup>Te and <sup>108</sup>Xe 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.},
  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.},
  issn         = {2469-9985},
  language     = {eng},
  month        = {03},
  number       = {3},
  publisher    = {American Physical Society},
  series       = {Physical Review C},
  title        = {Enhancement of α-particle formation near <sup>100</sup>Sn},
  url          = {https://lup.lub.lu.se/search/ws/files/78199850/PhysRevC.101.034313.pdf},
  doi          = {10.1103/PhysRevC.101.034313},
  volume       = {101},
  year         = {2020},
}