Parity dependence of nuclear level densities

被引：85

作者：

Alhassid, Y ^{[1
]}

Bertsch, GF

Liu, S

Nakada, H

机构：

[1] Yale Univ, Ctr Theoret Phys, Sloane Phys Lab, New Haven, CT 06520 USA

[2] Univ Washington, Inst Nucl Theory, Seattle, WA 98195 USA

[3] Univ Washington, Dept Phys, Seattle, WA 98195 USA

[4] Chiba Univ, Dept Phys, Chiba 2638522, Japan

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.84.4313

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A simple formula for the ratio of the number of odd- and even-parity states as a function of temperature is derived. This formula is used to calculate the ratio of level densities of opposite parities as a function of excitation energy. We test the formula with quantum Monte Carlo shell model calculations in the (Pf + g(9/2)) shell. The formula describes well the transition from low excitation energies where a single parity dominates to high excitations where the two densities are equal.

引用

页码：4313 / 4316

页数：4

共 24 条

[1] PRACTICAL SOLUTION TO THE MONTE-CARLO SIGN PROBLEM - REALISTIC CALCULATIONS OF FE-54 [J].

ALHASSID, Y ;

DEAN, DJ ;

KOONIN, SE ;

LANG, G ;

ORMAND, WE .

PHYSICAL REVIEW LETTERS, 1994, 72 (05) :613-616

[2]

Andersson P., 1986, Nuclear Data Sheets, V48, P251, DOI 10.1016/S0090-3752(86)80110-7

[3] THEORY OF SUPERCONDUCTIVITY [J].

BARDEEN, J ;

COOPER, LN ;

SCHRIEFFER, JR .

PHYSICAL REVIEW, 1957, 108 (05) :1175-1204

[4]

Bhat M. R., 1988, Nuclear Data Sheets, V55, P1, DOI 10.1016/S0090-3752(88)80034-6

[5]

BLOKHIN AI, 1976, SOV J NUCL PHYS+, V23, P31

[6]

Bohr A., 1969, Nuclear Structure, VI

[7] SYNTHESIS OF THE ELEMENTS IN STARS [J].

BURBIDGE, EM ;

BURBIDGE, GR ;

FOWLER, WA ;

HOYLE, F .

REVIEWS OF MODERN PHYSICS, 1957, 29 (04) :547-650

[8] PARITY DEPENDENCE OF THE NUCLEAR-LEVEL DENSITY [J].

CERF, N .

NUCLEAR PHYSICS A, 1993, 554 (01) :85-106

[9] COMBINATORIAL NUCLEAR-LEVEL DENSITY BY A MONTE-CARLO METHOD [J].

CERF, N .

PHYSICAL REVIEW C, 1994, 49 (02) :852-866

[10] LEVEL DENSITY PARAMETERS FOR BACK-SHIFTED FERMI GAS MODEL IN MASS RANGE 40 LESS-THAN A LESS-THAN 250 [J].

DILG, W ;

SCHANTL, W ;

VONACH, H ;

UHL, M .

NUCLEAR PHYSICS A, 1973, A217 (02) :269-298

← 1 2 3 →