Angular momentum dependence of the nuclear level-density parameter around Z ∼ 50

被引：21

作者：

Gupta, Y. K. ^{[1
]}

John, Bency ^{[1
]}

Biswas, D. C. ^{[1
]}

Nayak, B. K. ^{[1
]}

Saxena, A. ^{[1
]}

Choudhury, R. K. ^{[1
]}

机构：

[1] Bhabha Atom Res Ctr, Div Nucl Phys, Bombay 400085, Maharashtra, India

来源：

PHYSICAL REVIEW C | 2008年 / 78卷 / 05期

关键词：

D O I：

10.1103/PhysRevC.78.054609

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：

alpha-particle evaporation spectra and. gamma-ray multiplicities were measured for various target-projectile systems corresponding to residual nuclei in the range of Z(R) = 48-55 and with excitation energy in the range of 30-40 MeV. The high-energy part of the evaporation spectra were analyzed using the statistical model code PACE2 to derive values of the inverse level-density parameter (K). The K values were found to be in the range of 9.0-10.5 for all systems. Angular momentum dependence of the inverse level-density parameter was investigated using the gamma-ray multiplicity data. It is seen that there are strong variations in K as a function of angular momentum for many systems. Present results provide important input information for a systematic understanding of the statistical properties of nuclei at moderate excitation energies and angular momenta.

引用

页数：12

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