Neutron Laue diffraction in a weakly deformed crystal at the Bragg angles close to π/2

被引：5

作者：

Fedorov, V. V. ^{[1
]}

Kuznetsov, I. A. ^{[1
]}

Lapin, E. G. ^{[1
]}

Semenikhin, S. Yu. ^{[1
]}

Voronin, V. V. ^{[1
]}

机构：

[1] Petersburg Nucl Phys Inst, St Petersburg 188300, Russia

来源：

JETP LETTERS | 2007年 / 85卷 / 01期

基金：

俄罗斯基础研究基金会;

关键词：

14.20.Dh; 61.12.Gz;

D O I：

10.1134/S0021364007010171

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

An essential magnification of an external force acting on a diffracting neutron for the Bragg angles theta(B) close to the right one is observed. Any external action (caused by either crystal deformation or external force affected the neutron) results in a bend of the so called "Kato trajectories" inside the crystal and, for the case of a finite crystal, gives considerable variation of the intensities of both diffracted neutron beams (direct and reflected). It is shown that the magnification factor is proportional to tan(2)(theta(B)) and can reach (10(2)-10(3)) for Bragg angles sufficiently close to 90 degrees.

引用

页码：82 / 85

页数：4

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