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Title: High-spin states in {sup 191,193}Au and {sup 192}Pt: Evidence for oblate deformation and triaxial shapes

Abstract

High-spin states of {sup 191,193}Au and {sup 192}Pt have been populated in the {sup 186}W({sup 11}B, xn) and {sup 186}W({sup 11}B, p4n) reactions, respectively, at a beam energy of 68 MeV and their {gamma} decay was studied using the YRAST Ball detector array at the Wright Nuclear Structure Laboratory at Yale University. The level scheme of {sup 193}Au has been extended up to I{sup {pi}}=55/2{sup +}. New transitions were observed also in {sup 191}Au and {sup 192}Pt. Particle-plus-Triaxial-Rotor (PTR) and Total Routhian Surface (TRS) calculations were performed to determine the equilibrium deformations of the Au isotopes. The predictions for oblate deformations in these nuclei are in agreement with the experimental data. Development of nonaxial shapes is discussed within the framework of the PTR model.

Authors:
; ; ; ;  [1];  [2];  [3]; ; ;  [3]; ; ; ;  [4];  [5]; ;  [6];  [7];  [8];  [4]
  1. Department of Physics, Istanbul University, Vezneciler, 34459 Istanbul (Turkey)
  2. Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, BG-1784 Sofia (Bulgaria)
  3. Wright Nuclear Structure Laboratory, Yale University, New Haven, Connecticut 06520 (United States)
  4. Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996 (United States)
  5. Department of Physics, Nigde University, 51200 Nigde (Turkey)
  6. Faculty of Physics, St. Kliment Ohridski University of Sofia, BG-1164 Sofia (Bulgaria)
  7. Clark University, Worchester, Massachusetts 01610 (United States)
  8. Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803-4001 (United States)
Publication Date:
OSTI Identifier:
21067800
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 76; Journal Issue: 4; Other Information: DOI: 10.1103/PhysRevC.76.044315; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; BORON 11 REACTIONS; GAMMA DECAY; GOLD 191; GOLD 193; HIGH SPIN STATES; MEV RANGE; NEUTRONS; NUCLEAR DEFORMATION; NUCLEAR STRUCTURE; PARTICLE-CORE COUPLING MODEL; PLATINUM 192; PROTONS; TUNGSTEN 186 TARGET

Citation Formats

Oktem, Y, Akkus, B, Bostan, M, Cakirli, R B, Erduran, M N, Balabanski, D L, Beausang, C W, Department of Physics, University of Richmond, Richmond, Virginia 23173, Casten, R F, Kruecken, R, Novak, J R, Danchev, M, Djongolov, M, Riedinger, L L, Zeidan, O, Erturk, S, Gladniski, K A, Rainovski, G, Guerdal, G, Goon, J Tm, Hartley, D J, and Department of Physics, U.S. Naval Academy, Annapolis, Maryland 21402. High-spin states in {sup 191,193}Au and {sup 192}Pt: Evidence for oblate deformation and triaxial shapes. United States: N. p., 2007. Web. doi:10.1103/PHYSREVC.76.044315.
Oktem, Y, Akkus, B, Bostan, M, Cakirli, R B, Erduran, M N, Balabanski, D L, Beausang, C W, Department of Physics, University of Richmond, Richmond, Virginia 23173, Casten, R F, Kruecken, R, Novak, J R, Danchev, M, Djongolov, M, Riedinger, L L, Zeidan, O, Erturk, S, Gladniski, K A, Rainovski, G, Guerdal, G, Goon, J Tm, Hartley, D J, & Department of Physics, U.S. Naval Academy, Annapolis, Maryland 21402. High-spin states in {sup 191,193}Au and {sup 192}Pt: Evidence for oblate deformation and triaxial shapes. United States. https://doi.org/10.1103/PHYSREVC.76.044315
Oktem, Y, Akkus, B, Bostan, M, Cakirli, R B, Erduran, M N, Balabanski, D L, Beausang, C W, Department of Physics, University of Richmond, Richmond, Virginia 23173, Casten, R F, Kruecken, R, Novak, J R, Danchev, M, Djongolov, M, Riedinger, L L, Zeidan, O, Erturk, S, Gladniski, K A, Rainovski, G, Guerdal, G, Goon, J Tm, Hartley, D J, and Department of Physics, U.S. Naval Academy, Annapolis, Maryland 21402. Mon . "High-spin states in {sup 191,193}Au and {sup 192}Pt: Evidence for oblate deformation and triaxial shapes". United States. https://doi.org/10.1103/PHYSREVC.76.044315.
@article{osti_21067800,
title = {High-spin states in {sup 191,193}Au and {sup 192}Pt: Evidence for oblate deformation and triaxial shapes},
author = {Oktem, Y and Akkus, B and Bostan, M and Cakirli, R B and Erduran, M N and Balabanski, D L and Beausang, C W and Department of Physics, University of Richmond, Richmond, Virginia 23173 and Casten, R F and Kruecken, R and Novak, J R and Danchev, M and Djongolov, M and Riedinger, L L and Zeidan, O and Erturk, S and Gladniski, K A and Rainovski, G and Guerdal, G and Goon, J Tm and Hartley, D J and Department of Physics, U.S. Naval Academy, Annapolis, Maryland 21402},
abstractNote = {High-spin states of {sup 191,193}Au and {sup 192}Pt have been populated in the {sup 186}W({sup 11}B, xn) and {sup 186}W({sup 11}B, p4n) reactions, respectively, at a beam energy of 68 MeV and their {gamma} decay was studied using the YRAST Ball detector array at the Wright Nuclear Structure Laboratory at Yale University. The level scheme of {sup 193}Au has been extended up to I{sup {pi}}=55/2{sup +}. New transitions were observed also in {sup 191}Au and {sup 192}Pt. Particle-plus-Triaxial-Rotor (PTR) and Total Routhian Surface (TRS) calculations were performed to determine the equilibrium deformations of the Au isotopes. The predictions for oblate deformations in these nuclei are in agreement with the experimental data. Development of nonaxial shapes is discussed within the framework of the PTR model.},
doi = {10.1103/PHYSREVC.76.044315},
url = {https://www.osti.gov/biblio/21067800}, journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 4,
volume = 76,
place = {United States},
year = {2007},
month = {10}
}