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Title: Superallowed α Decay to Doubly Magic Sn 100

Abstract

In this paper, we report the first observation of the 108Xe → 104Te → 100Sn α-decay chain. The α emitters, 108Xe [E α = 4.4(2) MeV, T 1/2 = 58 +106 -23 μs] and 104Te[E α = 4.9(2) MeV, T 1/2 < 18 ns], decaying into doubly magic 100Sn were produced using a fusion-evaporation reaction 54Fe( 58Ni, 4n) 108Xe, and identified with a recoil mass separator and an implantation-decay correlation technique. This is the first time alpha radioactivity has been observed to a heavy self-conjugate nucleus. A previous benchmark for study of this fundamental decay mode has been the decay of 212Po into doubly magic 208Pb. Enhanced proton-neutron interactions in the N = Z parent nuclei may result in superallowed α decays with reduced α-decay widths significantly greater than that for 212Po. Finally, from the decay chain, we deduce that the α-reduced width for 108Xe or 104Te is more than a factor of 5 larger than that for 212Po.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [2];  [3];  [1];  [4];  [2];  [1];  [5];  [1];  [6];  [1];  [7];  [1];  [2];  [8] more »;  [1];  [9];  [4];  [1] « less
  1. Argonne National Lab. (ANL), Argonne, IL (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Maryland, College Park, MD (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Massachusetts, Lowell, MA (United States)
  4. Univ. of Edinburgh, Scotland (United Kingdom)
  5. Univ. of North Carolina, Chapel Hill, NC (United States); Duke Univ., Durham, NC (United States)
  6. Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Connecticut, Storrs, CT (United States)
  7. Univ. of Surrey, Guildford (United Kingdom)
  8. University of Jyvaskyla (Finland)
  9. Univ. of Maryland, College Park, MD (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1484239
Alternate Identifier(s):
OSTI ID: 1479846
Grant/Contract Number:  
AC02-06CH11357; FG02-94ER40834; FG02-94ER40848; FG02-97ER41041; FG02-97ER41033
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 121; Journal Issue: 18; 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

Auranen, K., Seweryniak, D., Albers, M., Ayangeakaa, A. D., Bottoni, S., Carpenter, M. P., Chiara, C. J., Copp, P., David, H. M., Doherty, D. T., Harker, J., Hoffman, C. R., Janssens, R. V. F., Khoo, T. L., Kuvin, S. A., Lauritsen, T., Lotay, G., Rogers, A. M., Sethi, J., Scholey, C., Talwar, R., Walters, W. B., Woods, P. J., and Zhu, S. Superallowed α Decay to Doubly MagicSn100. United States: N. p., 2018. Web. doi:10.1103/PhysRevLett.121.182501.
Auranen, K., Seweryniak, D., Albers, M., Ayangeakaa, A. D., Bottoni, S., Carpenter, M. P., Chiara, C. J., Copp, P., David, H. M., Doherty, D. T., Harker, J., Hoffman, C. R., Janssens, R. V. F., Khoo, T. L., Kuvin, S. A., Lauritsen, T., Lotay, G., Rogers, A. M., Sethi, J., Scholey, C., Talwar, R., Walters, W. B., Woods, P. J., & Zhu, S. Superallowed α Decay to Doubly MagicSn100. United States. doi:10.1103/PhysRevLett.121.182501.
Auranen, K., Seweryniak, D., Albers, M., Ayangeakaa, A. D., Bottoni, S., Carpenter, M. P., Chiara, C. J., Copp, P., David, H. M., Doherty, D. T., Harker, J., Hoffman, C. R., Janssens, R. V. F., Khoo, T. L., Kuvin, S. A., Lauritsen, T., Lotay, G., Rogers, A. M., Sethi, J., Scholey, C., Talwar, R., Walters, W. B., Woods, P. J., and Zhu, S. Tue . "Superallowed α Decay to Doubly MagicSn100". United States. doi:10.1103/PhysRevLett.121.182501. https://www.osti.gov/servlets/purl/1484239.
@article{osti_1484239,
title = {Superallowed α Decay to Doubly MagicSn100},
author = {Auranen, K. and Seweryniak, D. and Albers, M. and Ayangeakaa, A. D. and Bottoni, S. and Carpenter, M. P. and Chiara, C. J. and Copp, P. and David, H. M. and Doherty, D. T. and Harker, J. and Hoffman, C. R. and Janssens, R. V. F. and Khoo, T. L. and Kuvin, S. A. and Lauritsen, T. and Lotay, G. and Rogers, A. M. and Sethi, J. and Scholey, C. and Talwar, R. and Walters, W. B. and Woods, P. J. and Zhu, S.},
abstractNote = {In this paper, we report the first observation of the 108Xe → 104Te → 100Sn α-decay chain. The α emitters, 108Xe [Eα = 4.4(2) MeV, T1/2 = 58 +106 -23 μs] and 104Te[Eα = 4.9(2) MeV, T1/2 < 18 ns], decaying into doubly magic 100Sn were produced using a fusion-evaporation reaction 54Fe(58Ni, 4n)108Xe, and identified with a recoil mass separator and an implantation-decay correlation technique. This is the first time alpha radioactivity has been observed to a heavy self-conjugate nucleus. A previous benchmark for study of this fundamental decay mode has been the decay of 212Po into doubly magic 208Pb. Enhanced proton-neutron interactions in the N = Z parent nuclei may result in superallowed α decays with reduced α-decay widths significantly greater than that for 212Po. Finally, from the decay chain, we deduce that the α-reduced width for 108Xe or 104Te is more than a factor of 5 larger than that for 212Po.},
doi = {10.1103/PhysRevLett.121.182501},
journal = {Physical Review Letters},
number = 18,
volume = 121,
place = {United States},
year = {2018},
month = {10}
}

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