Effect of anomalous absorption of neutrons undergoing Laue diffraction at Bragg angles close to π/2

被引：11

作者：

Vezhlev, E. O. ^{[1
,2
]}

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

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

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

Fedorov, V. V. ^{[1
,2
]}

机构：

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

[2] St Petersburg State Polytech Univ, St Petersburg 195251, Russia

来源：

JETP LETTERS | 2012年 / 96卷 / 01期

基金：

俄罗斯基础研究基金会;

关键词：

PERFECT SINGLE CRYSTALS; CDS CRYSTAL; X-RAYS; MASS; SCATTERING;

D O I：

10.1134/S0021364012130127

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A direct experimental observation of the anomalous absorption of neutrons undergoing Laue diffraction in a highly perfect silicon single crystal of size about 200 mm at Bragg angles close to pi/2 is reported. It is shown that, in the case of diffraction at the (220) plane, the neutron absorption length may be several meters, which is nearly one order of magnitude longer than the mean absorption length for neutrons of the same wavelength. This circumstance makes it possible to study effects accompanying Laue diffraction at Bragg angles of up to 88A degrees and a crystal size of about 200 mm.

引用

页码：1 / 5

页数：5

共 40 条

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