DISTRIBUTION OF 2-PHONON STRENGTH IN EVEN N = 82 NUCLEI

被引：96

作者：

GRINBERG, M

STOYANOV, C

机构：

[1] Bulgarian Academy of Sciences, Institute for Nuclear Research and Nuclear Energy, 1784 Sofia

来源：

NUCLEAR PHYSICS A | 1994年 / 573卷 / 02期

关键词：

D O I：

10.1016/0375-9474(94)90169-4

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 fragmentation of two-phonon components in the structure of the low-lying states in Ba-138, Ce-140, Nd-142 and 144Sm is investigated in the framework of the quasiparticle-phonon model. The level energies and the transitions relevant to the members of quadrupole-octupole and octupole-octupole two-phonon multiplets are calculated and compared to experiment in the case of 144Sm. For the other N = 82 nuclei considered in the paper, predictions are given. The two-phonon-character of the first 1- state is confirmed on the basis of calculations including a large one-, two- and three-phonon basis. A B(E1; 1(1)- --> g.s.) value of the order of 10(-3) W.u. is obtained taking into account the influence of the giant dipole resonance. Several E1, E2 and E3 transitions are calculated which give additional information on the properties of the two-phonon states in the N = 82 region.

引用

页码：231 / 244

页数：14

共 27 条

[1]

Andrejtscheff W., 1975, Atomic Data and Nuclear Data Tables, V16, P515, DOI 10.1016/0092-640X(75)90023-6

[2] EVIDENCE FOR THE 2-BODY NATURE OF THE E1 TRANSITION OPERATOR IN THE SDF-INTERACTING BOSON MODEL [J].

BARFIELD, AF ;

VONBRENTANO, P ;

DEWALD, A ;

ZELL, KO ;

ZAMFIR, NV ;

BUCURESCU, D ;

IVASCU, M ;

SCHOLTEN, O .

ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI, 1989, 332 (01) :29-32

[3]

Bohr Aa., 1975, NUCL STRUCTURE, VII

[4] INTERPLAY OF COLLECTIVE AND NONCOLLECTIVE MODES IN LOW-LYING QUADRUPOLE STATES OF BA-140, CE-142, ND-144 AND SM-146 [J].

DINH, TK ;

GRINBERG, M ;

STOYANOV, C .

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 1992, 18 (02) :329-337

[5]

Endt P. M., 1981, Atomic Data and Nuclear Data Tables, V26, P47, DOI 10.1016/0092-640X(81)90011-5

[6] IN-BEAM STUDY OF MULTIPARTICLE EXCITATIONS IN THE SEMI-MAGIC NUCLEUS CE-140 [J].

ENGHARDT, W ;

KAUBLER, L ;

PRADE, H ;

KELLER, HJ ;

STARY, F .

NUCLEAR PHYSICS A, 1986, 449 (03) :417-445

[7] FAST E-1 TRANSITIONS AND EVIDENCE FOR OCTUPOLE-OCTUPOLE AND QUADRUPOLE-OCTUPOLE EXCITATIONS IN SM-144 [J].

GATENBY, RA ;

VANHOY, JR ;

BAUM, EM ;

JOHNSON, EL ;

YATES, SW ;

BELGYA, T ;

FAZEKAS, B ;

VERES, A ;

MOLNAR, G .

PHYSICAL REVIEW C, 1990, 41 (02) :R414-R418

[8] DECAY PROPERTIES AND LIFETIMES OF STATES IN SM-144 FROM (N, N'GAMMA) REACTION STUDIES [J].

GATENBY, RA ;

JOHNSON, EL ;

BAUM, EM ;

YATES, SW ;

WANG, D ;

VANHOY, JR ;

MCELLISTREM, MT ;

BELGYA, T ;

FAZEKAS, B ;

MOLNAR, G .

NUCLEAR PHYSICS A, 1993, 560 (02) :633-663

[9] LEVEL STRUCTURE AND TRANSITION-PROBABILITIES IN CE-140 [J].

GRINBERG, M ;

DINH, TK ;

PROTOCHRISTOV, C ;

PENEV, I ;

STOYANOV, C ;

ANDREJTSCHEFF, W .

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 1993, 19 (08) :1179-1189

[10]

HAMAMOTO I, 1993, NUCL PHYS A, V557, pC515, DOI 10.1016/0375-9474(93)90566-G

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