ELECTROMAGNETIC DECAY OF 2-PHONON STATES

被引：19

作者：

CATARA, F

CHOMAZ, P

VANGIAI, N

机构：

[1] IST NAZL FIS NUCL,I-95129 CATANIA,ITALY

[2] UNIV PARIS 06,CNRS,UNITE RECH,F-75230 PARIS 05,FRANCE

[3] UNIV PARIS 11,CNRS,INST PHYS NUCL,DIV PHYS THEOR,UNITE RECH,F-91406 ORSAY,FRANCE

来源：

PHYSICS LETTERS B | 1992年 / 277卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(92)90946-2

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the electromagnetic decay of two-phonon states corresponding to the multi-excitation of giant resonances. The calculations are performed within a boson expansion approach and the elementary modes are constructed in RPA. The rates for direct transition of two-phonon states to the ground state turn out to be not negligibly smaller than those from the (single) giant resonances. The former transitions are accompanied by a gamma-ray whose energy is equal to the sum of the two-phonon energies. Thus the detection of such high energy gamma-rays could provide a signature of the excitation of two-phonon states.

引用

页码：1 / 5

页数：5

共 13 条

[1]

BAUR G, 1988, PHYS REP, V163, P299

[2]

BLATT JM, 1952, THEORETICAL NUCLEAR

[3]

BLUMENFELD Y, 1991, 4 P INT C NUCL NUCL, P317

[4]

CATARA F, 1988, NUCL PHYS A, V482, pC271, DOI 10.1016/0375-9474(88)90590-8

[5] HIGH-LYING 2-PHONON STATES IN CA-40 [J].

CATARA, F ;

CHOMAZ, P ;

VANGIAI, N .

PHYSICS LETTERS B, 1989, 233 (1-2) :6-10

[6] COLLECTIVE EXCITATIONS OF CLOSED SHELL NUCLEI IN HEAVY-ION GRAZING COLLISIONS [J].

CHOMAZ, P ;

GIAI, NV ;

VAUTHERIN, D .

NUCLEAR PHYSICS A, 1988, 476 (01) :125-158

[7]

CHOMAZ P, 1991, IPN ORSAY PREPRINT

[8]

FRASCARIA N, 1988, NUCL PHYS A, V482, pC245, DOI 10.1016/0375-9474(88)90588-X

[9] PION DOUBLE CHARGE-EXCHANGE TO THE DOUBLE DIPOLE RESONANCE [J].

MORDECHAI, S ;

AUERBACH, N ;

BURLEIN, M ;

FORTUNE, HT ;

GREENE, SJ ;

MOORE, CF ;

MORRIS, CL ;

ODONNELL, JM ;

RAWOOL, MW ;

SILK, JD ;

WATSON, DL ;

YOO, SH ;

ZUMBRO, JD .

PHYSICAL REVIEW LETTERS, 1988, 61 (05) :531-534

[10] OBSERVATION OF DOUBLE ISOVECTOR GIANT-DIPOLE RESONANCES FROM PION DOUBLE CHARGE-EXCHANGE [J].

MORDECHAI, S ;

FORTUNE, HT ;

ODONNELL, JM ;

LIU, G ;

BURLEIN, M ;

WUOSMAA, AH ;

GREENE, S ;

MORRIS, CL ;

AUERBACH, N ;

YOO, SH ;

MOORE, CF .

PHYSICAL REVIEW C, 1990, 41 (01) :202-212

← 1 2 →