PYGMY DIPOLE RESONANCES IN THE CALCIUM ISOTOPES

被引：71

作者：

CHAMBERS, J

ZAREMBA, E

ADAMS, JP

CASTEL, B

机构：

[1] Department of Physics, Queen's University, Kingston

[2] Los Alamos National Laboratory, Los Alamos

来源：

PHYSICAL REVIEW C | 1994年 / 50卷 / 06期

关键词：

D O I：

10.1103/PhysRevC.50.R2671

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 microscopic density functional theory calculations of the total dipole absorption cross sections of the even-A calcium isotopes from Ca40 through Ca48. The results reveal the onset of a collective dipole oscillation occurring at low energy and decoupled from the giant dipole resonance. The radial density fluctuations associated with this low-lying mode have the character of the pygmy dipole resonance predicted to exist in neutron rich nuclei. © 1994 The American Physical Society.

引用

页码：R2671 / R2674

页数：4

共 21 条

[1]

Bertsch G. F., 1975, Physics Reports. Physics Letters Section C, V18c, P125, DOI 10.1016/0370-1573(75)90003-4

[2] STATISTICAL THEORY NUCLEI [J].

BRUECKNER, KA ;

BUCHLER, JR ;

JORNA, S ;

LOMBARD, RJ .

PHYSICAL REVIEW, 1968, 171 (04) :1188-+

[3] ELECTRON SCATTERING STUDIES OF CALCIUM AND TITANIUM ISOTOPES [J].

FROSCH, RF ;

HOFSTADTER, R ;

MCCARTHY, JS ;

NOLDEKE, GK ;

VANOOSTR.KJ ;

YEARIAN, MR ;

CLARK, BC ;

HERMAN, R ;

RAVENHALL, DG .

PHYSICAL REVIEW, 1968, 174 (04) :1380-+

[4] THE NEUTRON HALO OF EXTREMELY NEUTRON-RICH NUCLEI [J].

HANSEN, PG ;

JONSON, B .

EUROPHYSICS LETTERS, 1987, 4 (04) :409-414

[5] INHOMOGENEOUS ELECTRON-GAS [J].

RAJAGOPAL, AK ;

CALLAWAY, J .

PHYSICAL REVIEW B, 1973, 7 (05) :1912-1919

[6] SYSTEMATICS OF THE PYGMY RESONANCE IN KEV NEUTRON-CAPTURE GAMMA-RAY SPECTRA OF NUCLEI WITH N-ALMOST-EQUAL-TO-82-126 [J].

IGASHIRA, M ;

KITAZAWA, H ;

SHIMIZU, M ;

KOMANO, H ;

YAMAMURO, N .

NUCLEAR PHYSICS A, 1986, 457 (02) :301-316

[7]

KOBAYASHI T, 1993, NUCL PHYS A, V553, pC465, DOI 10.1016/0375-9474(93)90641-A

[8] SELF-CONSISTENT EQUATIONS INCLUDING EXCHANGE AND CORRELATION EFFECTS [J].

KOHN, W ;

SHAM, LJ .

PHYSICAL REVIEW, 1965, 140 (4A) :1133-&

[9] ENERGY DENSITY FORMALISM IN NUCLEI [J].

LOMBARD, RJ .

ANNALS OF PHYSICS, 1973, 77 (1-2) :380-413

[10]

LUNDQVIST S, 1984, THEORY INHOMOGENEOUS

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