Fine structure of the E1 response in Ce-140 below the particle threshold

被引：90

作者：

Herzberg, RD

vonBrentano, P

Eberth, J

Enders, J

Fischer, R

Huxel, N

Klemme, T

vonNeumannCosel, P

Nicolay, N

Pietralla, N

Ponomarev, VY

Reif, J

Richter, A

Schlegel, C

Schwengner, R

Skoda, S

Thomas, HG

Wiedenhover, I

Winter, G

Zilges, A

机构：

[1] TH DARMSTADT,INST KERNPHYS,D-64289 DARMSTADT,GERMANY

[2] ROSSENDORF INC,FORSCHUNGSZENTRUM ROSSENDORF EV,INST KERN & HADRONENPHYS,D-01314 DRESDEN,GERMANY

[3] YALE UNIV,WRIGHT NUCL STRUCT LAB,NEW HAVEN,CT 06520

[4] JOINT NUCL RES INST,BOGOLIUBOV LAB THEORET PHYS,DUBNA,RUSSIA

来源：

PHYSICS LETTERS B | 1997年 / 390卷 / 1-4期

关键词：

Ce-140(gamma; gamma'); reaction; El strength distribution; quasiparticle-phonon model;

D O I：

10.1016/S0370-2693(96)01374-3

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The E1 response of the semi-magic nucleus Ce-140 below the particle threshold was measured in a (gamma,gamma') experiment utilizing the new Euroball Cluster detector at the S-DALINAC. While the energy averaged data are in good agreement with tagged photon results, here they are resolved for the first time into 54 individual transitions. A quasiparticle-phonon model calculation including up to three-phonon configurations compares well to the extracted strength distribution. The interference between one- and two-phonon contributions is essential for a quantitative reproduction.

引用

页码：49 / 54

页数：6

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