COHERENT SCATTERING OF 59.5-KEV GAMMA-RAYS BY SOME MEDIUM AND HEAVY-ELEMENTS

被引：38

作者：

NAYAK, NG

SIDDAPPA, K

BALAKRISHNA, KM

LINGAPPA, N

机构：

[1] Department of Physics, Mangalore University, Mangalore 199

来源：

PHYSICAL REVIEW A | 1992年 / 45卷 / 07期

关键词：

D O I：

10.1103/PhysRevA.45.4490

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Whole-atom differential coherent scattering cross sections were measured for 59.5-keV gamma-rays scattered at 90-degrees by Cu, Mo, Ag, Cd, Sn, Pr, Sm, Gd, Dy, Ho, Yb, Ta, W, Pb, Th, and U employing a reflection-geometry setup and an effective graded shielding arrangement. A 2-cm3 hyperpure Ge detector was used for detecting coherently scattered-gamma rays. The measured cross sections are compared with the theoretical values based on the numerical partial-wave calculations for the available cases. Form factors corresponding to 3.395-angstrom-1 photon-momentum transfer were extracted from the measured cross sections. The results were compared with the different formalisms of form-factor theory and their relative appropriateness is discussed.

引用

页码：4490 / 4493

页数：4

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