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Titolo:
STRUCTURAL CHARACTERISTICS OF CE-142 THROUGH INELASTIC NEUTRON-SCATTERING
Autore:
VANHOY JR; ANTHONY JM; HAAS BM; BENEDICT BH; MEEHAN BT; HICKS SF; DAVOREN CM; LUNDSTEDT CL;
Indirizzi:
USN ACAD,DEPT PHYS ANNAPOLIS MD 21402 UNIV DALLAS,DEPT PHYS IRVING TX 75062
Titolo Testata:
Physical review. C. Nuclear physics
fascicolo: 5, volume: 52, anno: 1995,
pagine: 2387 - 2400
SICI:
0556-2813(1995)52:5<2387:SCOCTI>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
INTERACTING-BOSON MODEL; MIXED-SYMMETRY STATES; LOW-LYING STATES; ND-144; TRANSITIONS; EXCITATION; INTERPLAY; OCTUPOLE; NUCLEI; BA-140;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
32
Recensione:
Indirizzi per estratti:
Citazione:
J.R. Vanhoy et al., "STRUCTURAL CHARACTERISTICS OF CE-142 THROUGH INELASTIC NEUTRON-SCATTERING", Physical review. C. Nuclear physics, 52(5), 1995, pp. 2387-2400

Abstract

The excited levels of Ce-142 have been Studied using the (n,n'gamma) reaction. Excitation functions, angular distributions, and Doppler shifts were measured for gamma rays from levels up to an excitation energy of 3.3 MeV; multipole-mixing and branching ratios and transition rates were deduced. Theoretical predictions of electromagnetic transitionrates were compared for the interacting boson model, the quasiparticle phonon model, and the particle-core coupling model with experimentalvalues. Evidence is found supporting the fragmentation of mixed-symmetry strength among neighboring Ce-142 excited levels. This fragmentation is evinced in the 2(+) excitations through strong M1 transitions; however, the 3(+) mixed-symmetry strength is not manifested directly through strong M1 transitions, but rather is implied through model calculations. Candidates for multiphonon excitations are identified for thethree-quadrupole and quadrupole-octupole phonon quintets.

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Documento generato il 01/12/20 alle ore 13:03:37