GDR DISSIPATION AND NUCLEAR SHAPE IN HOT FAST-ROTATING DY NUCLEI

被引：12
|
作者：
VANSCHAGEN, JPS
ALHASSID, Y
BACELAR, JC
BUSH, B
HARAKEH, MN
HESSELINK, WHA
HOFMANN, HJ
KALANTARNAYESTANAKI, N
NOORMAN, RF
PLOMPEN, AJM
STOLK, A
SUJKOWSKI, Z
VANDERWOUDE, A
机构：
[1] YALE UNIV,CTR THEORET PHYS,SLOANE PHYS LAB,NEW HAVEN,CT 06511
[2] YALE UNIV,WRIGHT NUCL STRUCT LAB,NEW HAVEN,CT 06511
[3] KERNFYS VERSNELLER INST,9747 AA GRONINGEN,NETHERLANDS
[4] LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545
[5] SOLTAN INST NUCL STUDIES,PL-05400 OTWOCK,POLAND
来源：
PHYSICS LETTERS B | 1993年 / 308卷 / 3-4期
关键词：
D O I：
10.1016/0370-2693(93)91277-T
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The statistical gamma-ray decay of the GDR built on excited states in Dy nuclei has been investigated for selected domains of angular momentum up to about 70hBAR and temperatures in the range 1-2 MeV. The GDR strength distributions extracted from the data indicate large average nuclear deformations (beta approximately 0.35) at high angular momentum and average temperatures T greater-than-or-equal-to 1.5 MeV. This experimental observation is supported by results from calculations in which thermal shape fluctuations are taken into account around an oblate equilibrium deformation beta(eq) Although this equilibrium deformation increases with angular momentum, the calculations show rather large and constant average deformations [beta] approximately 0.35.
引用
收藏
页码：231 / 236
页数：6
相关论文
共 34 条
  • [1] THE SHAPE OF THE HEATED FAST-ROTATING NUCLEI
    IGNATYUK, AV
    MIKHAILOV, IN
    MOLINA, LH
    NAZMITDINOV, RG
    POMORSKY, K
    [J]. NUCLEAR PHYSICS A, 1980, 346 (1-2) : 191 - 215
  • [2] THE SHAPE OF FAST-ROTATING NUCLEI IN THE REGION OF SUBSHELL N=82
    CWIOK, S
    MIKHAILOV, IN
    [J]. ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI, 1983, 314 (03): : 337 - 345
  • [3] The GDR and dissipation in hot nuclei
    Paul, P
    [J]. NUCLEAR PHYSICS A, 1998, 630 (1-2) : 92C - 102C
  • [4] EVIDENCE FOR A SHAPE CHANGE OF HOT, FAST ROTATING SC-45 NUCLEI FROM GDR STUDIES
    KICINSKAHABIOR, M
    SNOVER, KA
    [J]. ACTA PHYSICA POLONICA B, 1993, 24 (02): : 433 - 435
  • [5] EQUILIBRIUM PROPERTIES OF FAST-ROTATING HEATED NUCLEI
    IGNATIUK, AV
    MIKHAILOV, IN
    NAZMITDINOV, RG
    NERLOPOMORSKA, B
    POMORSKI, K
    [J]. PHYSICS LETTERS B, 1978, 76 (05) : 543 - 546
  • [6] MACROSCOPIC DESCRIPTION OF COLLECTIVE MOTION IN FAST-ROTATING NUCLEI
    BALBUTSEV, EB
    MIKHAILOV, IN
    VAISHVILA, Z
    [J]. NUCLEAR PHYSICS A, 1986, 457 (02) : 222 - 260
  • [7] Shape transitions in hot rotating nuclei
    Goodman, AL
    [J]. NUCLEAR PHYSICS A, 2001, 687 (1-2) : 206C - 211C
  • [8] FISSION DYNAMICS OF HOT NUCLEI AND NUCLEAR DISSIPATION
    HILSCHER, D
    GONTCHAR, II
    ROSSNER, H
    [J]. PHYSICS OF ATOMIC NUCLEI, 1994, 57 (07) : 1187 - 1199
  • [9] POINCARE SHAPE TRANSITIONS IN HOT ROTATING NUCLEI
    Mazurek, K.
    Dudek, J.
    Kmiecik, M.
    Maj, A.
    Wieleczko, J. P.
    Rouvel, D.
    [J]. ACTA PHYSICA POLONICA B, 2011, 42 (3-4): : 471 - 476
  • [10] Projected shell model analysis of structural evolution and chaoticity in fast-rotating nuclei
    Wang, Long-Jun
    Dong, Jianmin
    Chen, Fang-Qi
    Sun, Yang
    [J]. JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 2019, 46 (10)
1234