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Title: Electromagnetic Moments of Radioactive 136Te and the Emergence of Collectivity 2p ⊕ 2n outside of Double-Magic 132Sn

Abstract

Radioactive 136Te has two valence protons and two valence neutrons outside of the 132Sn double shell closure, providing a simple laboratory for exploring the emergence of collectivity and nucleon- nucleon interactions. Coulomb excitation of 136Te on a titanium target was utilized to determine an extensive set of electromagnetic moments for the three lowest-lying states, including B(E2;0$$+\atop{1}$$→ 2$$+\atop{1}$$ ), Q(2$$+\atop{1}$$ ), and g(2$$+\atop{1}$$ ). The results indicate that the first-excited state, 2$$+\atop{1}$$ , composed of the simple 2p ⊕ 2n system, is prolate deformed, and its wave function is dominated by neutron degrees of freedom, but not to the extent previously suggested. It is demonstrated that extreme sensitivity of g(2$$+\atop{1}$$) to the proton and neutron contributions to the wave function provides unique insight into the nature of emerging collectivity, and g(2$$+\atop{1}$$ ) was used to differentiate among several state-of-the-art theoretical calculations. Finally, our results are best described by the most recent shell model calculations.

Authors:
 [1];  [2];  [1];  [3];  [1];  [1];  [1];  [4];  [3];  [5];  [6];  [1];  [7];  [3];  [7];  [8];  [7];  [9];  [6];  [1] more »;  [1] « less
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Physics Division
  2. Australian National Univ., Canberra, ACT (Australia). Dept. of Nuclear Physics
  3. Univ. of Naples Federico II (Italy). National Inst. of Nuclear Physics
  4. Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab. (NSCL)
  5. Univ. of Naples Federico II (Italy). Dept. of Physics
  6. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy
  7. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Joint Inst. for Heavy Ion Research
  8. Univ. Nacional Autonoma de Mexico (UNAM), Mexico City (Mexico). Inst. de Ciencias Nucleares
  9. Florida State Univ., Tallahassee, FL (United States). Dept. of Physics
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Holifield Radioactive Ion Beam Facility (HRIBF)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1345790
Alternate Identifier(s):
OSTI ID: 1345694
Grant/Contract Number:  
AC05-00OR22725; DP0773273; FG02-96ER40963; PHY-1404442
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 118; Journal Issue: 9; 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

Allmond, James M., Stuchberry, A. E., Baktash, Cyrus, Gargano, A., Galindo-Uribarri, Alfredo, Univ. of Tennessee, Knoxville, TN, Radford, David C., Bingham, C. R., Univ. of Tennessee, Knoxville, TN, Brown, B. Alex, Michigan State Univ., East Lansing, MI, Coraggio, L., Covello, A., Danchev, M., St. Kliment Ohridski Univ. of Sofia, Gross, Carl J., Hausladen, Paul, Itaco, N., Univ. of Campania, Caserta, Lagergren, Karin B., Padilla-Rodal, Elizabeth, Pavan, John R., Riley, Mark A., Stone, N. J., Univ. of Oxford, Stracener, Daniel W., Varner, Jr., Robert L., and Yu, Chang-Hong. Electromagnetic Moments of Radioactive 136Te and the Emergence of Collectivity 2p ⊕ 2n outside of Double-Magic 132Sn. United States: N. p., 2017. Web. doi:10.1103/PhysRevLett.118.092503.
Allmond, James M., Stuchberry, A. E., Baktash, Cyrus, Gargano, A., Galindo-Uribarri, Alfredo, Univ. of Tennessee, Knoxville, TN, Radford, David C., Bingham, C. R., Univ. of Tennessee, Knoxville, TN, Brown, B. Alex, Michigan State Univ., East Lansing, MI, Coraggio, L., Covello, A., Danchev, M., St. Kliment Ohridski Univ. of Sofia, Gross, Carl J., Hausladen, Paul, Itaco, N., Univ. of Campania, Caserta, Lagergren, Karin B., Padilla-Rodal, Elizabeth, Pavan, John R., Riley, Mark A., Stone, N. J., Univ. of Oxford, Stracener, Daniel W., Varner, Jr., Robert L., & Yu, Chang-Hong. Electromagnetic Moments of Radioactive 136Te and the Emergence of Collectivity 2p ⊕ 2n outside of Double-Magic 132Sn. United States. doi:10.1103/PhysRevLett.118.092503.
Allmond, James M., Stuchberry, A. E., Baktash, Cyrus, Gargano, A., Galindo-Uribarri, Alfredo, Univ. of Tennessee, Knoxville, TN, Radford, David C., Bingham, C. R., Univ. of Tennessee, Knoxville, TN, Brown, B. Alex, Michigan State Univ., East Lansing, MI, Coraggio, L., Covello, A., Danchev, M., St. Kliment Ohridski Univ. of Sofia, Gross, Carl J., Hausladen, Paul, Itaco, N., Univ. of Campania, Caserta, Lagergren, Karin B., Padilla-Rodal, Elizabeth, Pavan, John R., Riley, Mark A., Stone, N. J., Univ. of Oxford, Stracener, Daniel W., Varner, Jr., Robert L., and Yu, Chang-Hong. Fri . "Electromagnetic Moments of Radioactive 136Te and the Emergence of Collectivity 2p ⊕ 2n outside of Double-Magic 132Sn". United States. doi:10.1103/PhysRevLett.118.092503. https://www.osti.gov/servlets/purl/1345790.
@article{osti_1345790,
title = {Electromagnetic Moments of Radioactive 136Te and the Emergence of Collectivity 2p ⊕ 2n outside of Double-Magic 132Sn},
author = {Allmond, James M. and Stuchberry, A. E. and Baktash, Cyrus and Gargano, A. and Galindo-Uribarri, Alfredo and Univ. of Tennessee, Knoxville, TN and Radford, David C. and Bingham, C. R. and Univ. of Tennessee, Knoxville, TN and Brown, B. Alex and Michigan State Univ., East Lansing, MI and Coraggio, L. and Covello, A. and Danchev, M. and St. Kliment Ohridski Univ. of Sofia and Gross, Carl J. and Hausladen, Paul and Itaco, N. and Univ. of Campania, Caserta and Lagergren, Karin B. and Padilla-Rodal, Elizabeth and Pavan, John R. and Riley, Mark A. and Stone, N. J. and Univ. of Oxford and Stracener, Daniel W. and Varner, Jr., Robert L. and Yu, Chang-Hong},
abstractNote = {Radioactive 136Te has two valence protons and two valence neutrons outside of the 132Sn double shell closure, providing a simple laboratory for exploring the emergence of collectivity and nucleon- nucleon interactions. Coulomb excitation of 136Te on a titanium target was utilized to determine an extensive set of electromagnetic moments for the three lowest-lying states, including B(E2;0$+\atop{1}$→ 2$+\atop{1}$ ), Q(2$+\atop{1}$ ), and g(2$+\atop{1}$ ). The results indicate that the first-excited state, 2$+\atop{1}$ , composed of the simple 2p ⊕ 2n system, is prolate deformed, and its wave function is dominated by neutron degrees of freedom, but not to the extent previously suggested. It is demonstrated that extreme sensitivity of g(2$+\atop{1}$) to the proton and neutron contributions to the wave function provides unique insight into the nature of emerging collectivity, and g(2$+\atop{1}$ ) was used to differentiate among several state-of-the-art theoretical calculations. Finally, our results are best described by the most recent shell model calculations.},
doi = {10.1103/PhysRevLett.118.092503},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 9,
volume = 118,
place = {United States},
year = {2017},
month = {3}
}

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