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Title: First-excited state g factor of Te 136 by the recoil in vacuum method

Abstract

The g factor of the first 2+ state of radioactive 136Te with two valence protons and two valence neutrons beyond double-magic 132Sn has been measured by the recoil in vacuum (RIV) method. The lifetime of this state is an order of magnitude longer than the lifetimes of excited states recently measured by the RIV method in Sn and Te isotopes, requiring a new evaluation of the free-ion hyperfine interactions and methodology used to determine the g factor. In this paper, the calibration data are reported and the analysis procedures are described in detail. The resultant g factor has a similar magnitude to the g factors of other nuclei with an equal number of valence protons and neutrons in the major shell. However, an unexpected trend is found in the g factors of the N = 84 isotones, which decrease from 136Te to 144Nd. Finally, shell model calculations with interactions derived from the CD Bonn potential show good agreement with the g factors and E2 transition rates of 2+ states around 132Sn, confirming earlier indications that 132Sn is a good doubly magic core.

Authors:
 [1];  [2];  [3];  [2];  [4];  [4];  [2];  [5];  [2]
  1. Australian National Univ., Canberra, ACT (Australia)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. St. Kliment Ohridski Univ. of Sofia (Bulgaria); Univ. of Tennessee, Knoxville, TN (United States)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
  5. Univ. of Tennessee, Knoxville, TN (United States); Univ. of Oxford (United Kingdom)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP); Australian Research Council (ARC) (Australia)
OSTI Identifier:
1394369
Alternate Identifier(s):
OSTI ID: 1373133
Grant/Contract Number:  
AC05-00OR22725; FG02-96ER40963; DP0773273
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 96; Journal Issue: 1; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; electromagnetic transitions; low & intermediate energy heavy-ion reactions; nuclear structure & decays; spectroscopic factors & electromagnetic moments; unstable nuclei induced nuclear reactions

Citation Formats

Stuchbery, A. E., Allmond, J. M., Danchev, M., Baktash, C., Bingham, C. R., Galindo-Uribarri, A., Radford, D. C., Stone, N. J., and Yu, C. -H. First-excited state g factor of Te136 by the recoil in vacuum method. United States: N. p., 2017. Web. doi:10.1103/PhysRevC.96.014321.
Stuchbery, A. E., Allmond, J. M., Danchev, M., Baktash, C., Bingham, C. R., Galindo-Uribarri, A., Radford, D. C., Stone, N. J., & Yu, C. -H. First-excited state g factor of Te136 by the recoil in vacuum method. United States. https://doi.org/10.1103/PhysRevC.96.014321
Stuchbery, A. E., Allmond, J. M., Danchev, M., Baktash, C., Bingham, C. R., Galindo-Uribarri, A., Radford, D. C., Stone, N. J., and Yu, C. -H. Thu . "First-excited state g factor of Te136 by the recoil in vacuum method". United States. https://doi.org/10.1103/PhysRevC.96.014321. https://www.osti.gov/servlets/purl/1394369.
@article{osti_1394369,
title = {First-excited state g factor of Te136 by the recoil in vacuum method},
author = {Stuchbery, A. E. and Allmond, J. M. and Danchev, M. and Baktash, C. and Bingham, C. R. and Galindo-Uribarri, A. and Radford, D. C. and Stone, N. J. and Yu, C. -H.},
abstractNote = {The g factor of the first 2+ state of radioactive 136Te with two valence protons and two valence neutrons beyond double-magic 132Sn has been measured by the recoil in vacuum (RIV) method. The lifetime of this state is an order of magnitude longer than the lifetimes of excited states recently measured by the RIV method in Sn and Te isotopes, requiring a new evaluation of the free-ion hyperfine interactions and methodology used to determine the g factor. In this paper, the calibration data are reported and the analysis procedures are described in detail. The resultant g factor has a similar magnitude to the g factors of other nuclei with an equal number of valence protons and neutrons in the major shell. However, an unexpected trend is found in the g factors of the N = 84 isotones, which decrease from 136Te to 144Nd. Finally, shell model calculations with interactions derived from the CD Bonn potential show good agreement with the g factors and E2 transition rates of 2+ states around 132Sn, confirming earlier indications that 132Sn is a good doubly magic core.},
doi = {10.1103/PhysRevC.96.014321},
journal = {Physical Review C},
number = 1,
volume = 96,
place = {United States},
year = {Thu Jul 27 00:00:00 EDT 2017},
month = {Thu Jul 27 00:00:00 EDT 2017}
}

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Works referencing / citing this record:

First-excited state g  factors in the stable, even Ge and Se isotopes
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