Boson forbidden low-energy E1-transitions in spherical nuclei

被引：93

作者：

Ponomarev, VY ^{[1
]}

Stoyanov, C

Tsoneva, N

Grinberg, M

机构：

[1] Joint Inst Nucl Res, Bogoliubov Lab Theoret Phys, Dubna 141980, Moscow Region, Russia

[2] Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, BU-1784 Sofia, Bulgaria

来源：

NUCLEAR PHYSICS A | 1998年 / 635卷 / 04期

关键词：

low-energy E1-transitions; fermion structure of phonons; multiphonon states; dipole core polarization; Quasiparticle Phonon Model calculation;

D O I：

10.1016/S0375-9474(98)00187-0

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：

Low-energy El-transitions in spherical nuclei forbidden in the ideal boson picture are considered. For that the internal fermion structure of nuclear excitations is taken into account. Several examples of such transitions calculated within the Quasiparticle Phonon Model are considered and the role of dipole core polarization is discussed. It is shown that transition probabilities of an order of 10(-3) W.u. observed experimentally are well described by this model. (C) 1998 Elsevier Science B.V.

引用

页码：470 / 483

页数：14

共 42 条

[1]

ANDREJTSCHEFF W, 1975, ATOM DATA NUCL DATA, V16, pC515

[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] 2-PHONON CHARACTER OF THE LOWEST J-PI=1(-) STATE OF ND-142 [J].

BELGYA, T ;

GATENBY, RA ;

BAUM, EM ;

JOHNSON, EL ;

DIPRETE, DP ;

YATES, SW ;

FAZEKAS, B ;

MOLNAR, G .

PHYSICAL REVIEW C, 1995, 52 (05) :R2314-R2316

[4]

Bohr A., 1998, Nuclear Structure, Volume 2: Nuclear Deformations, V2

[5]

BRYSSINCK J, IN PRESS

[6]

BRYSSINCK J, 1997, INT C NUCL STRUCT RE, P262

[7] 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

[8] THE NUCLEAR RESPONSE WITHIN EXTENDED RPA THEORIES [J].

DROZDZ, S ;

NISHIZAKI, S ;

SPETH, J ;

WAMBACH, J .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1990, 197 (01) :1-65

[9] Dipole excitations in the transitional nucleus Nd-144 studied in photon scattering experiments [J].

Eckert, T ;

Beck, O ;

Besserer, J ;

vonBrentano, P ;

Fischer, R ;

Herzberg, RD ;

Kneissl, U ;

Margraf, J ;

Maser, H ;

Nord, A ;

Pietralla, N ;

Pitz, HH ;

Yates, SW ;

Zilges, A .

PHYSICAL REVIEW C, 1997, 56 (03) :1256-1265

[10]

ENDERS J, 1997, NUCL PHYS A, V612, P235

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