Quasiparticle resonances in the BCS approach

被引:16
作者
Betan, R. Id
Sandulescu, N. [1 ]
Vertse, T.
机构
[1] Inst Phys & Nucl Engn, RO-76900 Bucharest, Romania
[2] Univ Nacl Rosario, FCEIA, Dept Quim & Fis, RA-2000 Rosario, Santa Fe, Argentina
[3] CEA, DAM, Serv Phys Nucl, F-91680 Bruyeres Le Chatel, France
[4] Univ Debrecen, Fac Informat Sci, H-4010 Debrecen, Hungary
基金
匈牙利科学研究基金会;
关键词
D O I
10.1016/j.nuclphysa.2006.03.003
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
We present a simple method for calculating the energies and the widths of quasiparticle resonant states in nuclei close to the driplines. The method is based on BCS equations written in the Berggren representation. In this representation the quasiparticle resonances are associated to the Gamow states of the mean field. The method is illustrated for the case of neutron-rich nuclei (20)-O-22 and Ni-84. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:93 / 102
页数:10
相关论文
共 16 条
[1]   ENERGY-LEVELS OF LIGHT-NUCLEI A=13-15 [J].
AJZENBERGSELOVE, F .
NUCLEAR PHYSICS A, 1991, 523 (01) :1-196
[2]   Structure of pairs in heavy weakly-bound nuclei [J].
Bennett, JR ;
Engel, J ;
Pittel, S .
PHYSICS LETTERS B, 1996, 368 (1-2) :7-12
[3]   RESONANT STATE EXPANSION OF THE RESOLVENT [J].
BERGGREN, T ;
LIND, P .
PHYSICAL REVIEW C, 1993, 47 (02) :768-778
[4]   ON USE OF RESONANT STATES IN EIGENFUNCTION EXPANSIONS OF SCATTERING AND REACTION AMPLITUDES [J].
BERGGREN, T .
NUCLEAR PHYSICS A, 1968, A109 (02) :265-&
[5]   PAIR CORRELATIONS NEAR THE NEUTRON DRIP LINE [J].
BERTSCH, GF ;
ESBENSEN, H .
ANNALS OF PHYSICS, 1991, 209 (02) :327-363
[6]  
Bulgac A., 1980, FT1941980 I AT PHYS
[7]  
Gennes P. D., 1966, SUPERCONDUCTIVITY ME
[8]   Continuum HFB calculations with finite range pairing interactions [J].
Grasso, M ;
Van Giai, N ;
Sandulescu, N .
PHYSICS LETTERS B, 2002, 535 (1-4) :103-108
[9]   Pairing and continuum effects in nuclei close to the drip line [J].
Grasso, M ;
Sandulescu, N ;
Giai, NV ;
Liotta, RJ .
PHYSICAL REVIEW C, 2001, 64 (06) :643211-643219
[10]   NORMALIZATION OF GAMOW FUNCTIONS [J].
GYARMATI, B ;
VERTSE, T .
NUCLEAR PHYSICS A, 1971, A160 (03) :523-&