Back-face Bragg diffraction from a perfect and ultralightly deformed thick crystal

被引：10

作者：

Agamalian, M ^{[1
]}

Iolin, E

Rusevich, L

Glinka, CJ

Wignall, GD

机构：

[1] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[2] Inst Phys Energet, LV-1006 Riga, Latvia

[3] NIST, Gaithersburg, MD 20899 USA

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.81.602

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The intensity of neutrons Bragg diffracted from the back face of a 9 mm thick slab-shaped Si(lll) analyzer crystal has been measured experimentally at the ORNL double crystal diffractometer and calculated theoretically. The back-face rocking curve of a strain-free perfect crystal contains two symmetrical peaks which become asymmetrical under an ultrasmall static deformation strain (bending with a radius of tens of km). The asymmetry is shown to be a sensitive measure of both the magnitude and direction of bending.

引用

页码：602 / 605

页数：4

共 14 条

[1] Optimization of a Bonse-Hart Ultra-Small-Angle Neutron Scattering facility by elimination of the rocking-curve wings [J].