Structure of high-spin states in 91Sr and 92Sr -: art. no. 034323

被引：28
作者：
Stefanova, EA
Danchev, M
Schwenger, R
Balabanski, DL
Carpenter, MP
Djongolov, M
Fischer, SM
Hartley, DJ
Janssens, RVF
Mueller, WF
Nisius, D
Reviol, W
Riedinger, LL
Zeidan, O
机构：
[1] Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, BU-1784 Sofia, Bulgaria
[2] Rossendorf Inc, Forschungszentrum Rossendorf EV, Inst Kern & Hadronenphys, D-01314 Dresden, Germany
[3] Univ Sofia, Fac Phys, Sofia 1164, Bulgaria
[4] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA
[5] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA
[6] Michigan State Univ, NSCL, E Lansing, MI 48824 USA
[7] Washington Univ, Dept Chem, St Louis, MO 63130 USA
来源：
PHYSICAL REVIEW C | 2002年 / 65卷 / 03期
关键词：
D O I：
10.1103/PhysRevC.65.034323
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
The nuclei Sr-91 and Sr-92 were produced at high spin as fission fragments following the fusion reaction S-36+Tb-159 at 165 MeV. gamma rays were detected with the Gammasphere array. The level schemes of Sr-91 and Sr-92 were extended up to Eapproximate to6 MeV and Eapproximate to8 MeV, respectively. Level structures in Sr-91 and Sr-92 were interpreted in shell-model calculations performed in the configuration space (0f(5/2), 1p(3/2), 1p(1/2), 0g(9/2)) for the protons and (1p(1/2), 0g(9/2), 1d(5/2)) for the neutrons. Negative-parity states in the yrast sequences are described in these calculations by coupling 3(-) proton excitations to the unpaired 1d(5/2) neutrons. A possible reduction of the gap between the proton 1p(3/2) and 1p(1/2) orbitals in Sr-92 is discussed.
引用
收藏
页码：343231 / 3432310
页数：10
相关论文
共 32 条
[1]   STATES OF HIGH-SPIN IN SR-87, SR-88 AND SR-89 [J].
ARNELL, SE ;
NILSSON, A ;
STANKIEWICZ, O .
NUCLEAR PHYSICS A, 1975, A241 (01) :109-134
[2]   Nuclear data sheets for A = 92 [J].
Baglin, Coral M. .
Nuclear Data Sheets, 2000, 91 (03) :423-584
[3]   EXCITATION OF CORE COUPLED STATES IN SR-87 AND SR-89 VIA 2-STEP PROCESSES IN SR-88(PARA,D) AND SR-88(D,PARA) REACTIONS [J].
BLOK, HP ;
ZIMMERMAN, WR ;
KRAUSHAAR, JJ ;
BATAYCSORBA, PA .
NUCLEAR PHYSICS A, 1977, 287 (01) :156-178
[4]   SHELL-MODEL DESCRIPTION OF THE N = 50 ISOTONES BETWEEN SR-88 AND SN-100 [J].
BLOMQVIST, J ;
RYDSTROM, L .
PHYSICA SCRIPTA, 1985, 31 (01) :31-36
[5]   Structure of 96Mo at high spins [J].
Chatterjee, JM ;
Saha-Sarkar, M ;
Bhattacharya, S ;
Banerjee, P ;
Sarkar, S ;
Singh, RP ;
Murulithar, S ;
Bhowmik, RK .
NUCLEAR PHYSICS A, 2000, 678 (04) :367-381
[6]   QUENCHING OF THE 2P1/2-2P3/2 PROTON SPIN ORBIT SPLITTING IN THE SR-ZR REGION [J].
FEDERMAN, P ;
PITTEL, S ;
ETCHEGOYEN, A .
PHYSICS LETTERS B, 1984, 140 (5-6) :269-271
[7]   High-spin studies of fission products in fusion-evaporation reactions [J].
Fotiades, N ;
Cizewski, JA ;
Ding, KY ;
Krücken, R ;
Becker, JA ;
Bernstein, LA ;
Hauschild, K ;
McNabb, DP ;
Younes, W ;
Fallon, P ;
Lee, IY ;
Macchiavelli, AO .
PHYSICA SCRIPTA, 2000, T88 :127-130
[8]   HIGH-SPIN STATES IN TC-94 AND THE SHELL-MODEL INTERPRETATION [J].
GHUGRE, SS ;
NAGULESWARAN, S ;
BHOWMIK, RK ;
GARG, U ;
PATEL, SB ;
REVIOL, W ;
WALPE, JC .
PHYSICAL REVIEW C, 1995, 51 (05) :2809-2812
[9]   SPECTROSCOPY OF RU-95 AT HIGH SPINS [J].
GHUGRE, SS ;
PATEL, SB ;
GUPTA, M ;
BHOWMIK, RK ;
SHEIKH, JA .
PHYSICAL REVIEW C, 1994, 50 (03) :1346-1354
[10]   SHELL-MODEL STUDY OF N - 50 NUCLEI [J].
GLOECKNER, DH ;
SERDUKE, FJD .
NUCLEAR PHYSICS A, 1974, 220 (03) :477-490
1234