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

Journal Article · Mon Oct 15 00:00:00 EDT 2007 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.76.044315· OSTI ID:21067800

Oktem, Y; Akkus, B; Bostan, M; Cakirli, R B; Erduran, M N ^[1]; Balabanski, D L ^[2]; Beausang, C W ^[3]; Casten, R F; Kruecken, R; Novak, J R ^[3]; Danchev, M; Djongolov, M; Riedinger, L L; Zeidan, O ^[4]; Erturk, S ^[5]; Gladniski, K A; Rainovski, G ^[6]; Guerdal, G ^[7]; Goon, J Tm ^[8]; Hartley, D J ^[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)

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.

• OSTI ID: 21067800
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 76, Issue 4; Other Information: DOI: 10.1103/PhysRevC.76.044315; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

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