Probing the nature of particle-core couplings in 49Ca with γ spectroscopy and heavy-ion transfer reactions

被引：56

作者：

Montanari, D. ^{[1
,2
]}

Leoni, S. ^{[1
,2
]}

Mengoni, D. ^{[3
,4
]}

Benzoni, G. ^{[2
]}

Blasi, N. ^{[2
]}

Bocchi, G. ^{[1
]}

Bortignon, P. F. ^{[1
,2
]}

Bracco, A. ^{[1
,2
]}

Camera, F. ^{[1
,2
]}

Colo, G. ^{[1
,2
]}

Corsi, A. ^{[1
,2
]}

Crespi, F. C. L. ^{[1
,2
]}

Million, B. ^{[2
]}

Nicolini, R. ^{[1
,2
]}

Wieland, O. ^{[2
]}

Valiente-Dobon, J. J. ^{[5
]}

Corradi, L. ^{[5
]}

de Angelis, G. ^{[5
]}

Della Vedova, F. ^{[5
]}

Fioretto, E. ^{[5
]}

Gadea, A. ^{[6
]}

Napoli, D. R. ^{[5
]}

Orlandi, R. ^{[5
]}

Recchia, F. ^{[3
,7
]}

Sahin, E. ^{[5
]}

Silvestri, R. ^{[5
]}

Stefanini, A. M. ^{[5
]}

Singh, R. P. ^{[5
]}

Szilner, S. ^{[8
]}

Bazzacco, D. ^{[7
]}

Farnea, E. ^{[7
]}

Menegazzo, R. ^{[7
]}

Gottardo, A. ^{[3
,5
]}

Lenzi, S. M. ^{[3
,7
]}

Lunardi, S. ^{[3
,7
]}

Montagnoli, G. ^{[3
,7
]}

Scarlassara, F. ^{[3
,7
]}

Ur, C. ^{[7
]}

Lo Bianco, G. ^{[9
,10
]}

Zucchiatti, A. ^{[11
]}

Kmiecik, M. ^{[12
]}

Maj, A. ^{[12
]}

Meczynski, W. ^{[12
]}

Dewald, A. ^{[13
]}

Pissulla, Th. ^{[13
]}

Pollarolo, G. ^{[14
,15
]}

机构：

[1] Univ Milan, Dipartimento Fis, Milan, Italy

[2] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy

[3] Univ Padua, Dipartimento Fis, Padua, Italy

[4] Univ W Scotland, Paisley, Renfrew, Scotland

[5] Ist Nazl Fis Nucl, Lab Nazl Legnaro, Padua, Italy

[6] Univ Valencia, CSIC, IFIC, E-46003 Valencia, Spain

[7] Ist Nazl Fis Nucl, Sez Padova, Padua, Italy

[8] Rudjer Boskovic Inst, Zagreb, Croatia

[9] Univ Camerino, I-62032 Camerino, Italy

[10] Ist Nazl Fis Nucl, Sez Perugia, Perugia, Italy

[11] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy

[12] Polish Acad Sci, Niewodniczanski Inst Nucl Phys, Krakow, Poland

[13] Univ Cologne, Inst Kernphys, D-5000 Cologne, Germany

[14] Univ Turin, Dipartimento Fis Teor, I-10124 Turin, Italy

[15] Ist Nazl Fis Nucl, Sez Torino, Turin, Italy

来源：

PHYSICS LETTERS B | 2011年 / 697卷 / 04期

关键词：

Multi-nucleon transfer; Gamma spectroscopy; Magnetic spectrometer; Particle-core coupling; NEUTRON-RICH NUCLEI; MAGNETIC SPECTROMETER; SHELL-MODEL; POLARIZATION; EXCITATIONS; CLOVER; STATES;

D O I：

10.1016/j.physletb.2011.01.046

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Neutron rich nuclei around Ca-48 have been measured with the CLARA-PRISMA setup, making use of Ca-48 on Ni-64 binary reactions, at 5.9 MeV/A. Angular distributions of gamma rays give evidence, in several transfer channels, for a large spin alignment (approximate to 70%) perpendicular to the reaction plane, making it possible to firmly establish spin and parities of the excited states. In the case of Ca-49, states arising from different types of particle-core couplings are, for the first time, unambiguously identified on basis of angular distribution, polarization and lifetime measurements. Shell model and particle-vibration coupling calculations are used to pin down the nature of the states. Evidence is found for the presence, in the same excitation energy region, of two types of coupled states, i.e. single particle coupled to either Ca-48 or Ca-50 simple configurations, and particle-vibration coupled states based on the 3- phonon of Ca-48. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：288 / 293

页数：6

共 24 条

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