DESIGN OF MICROFOCUSING BENT-CRYSTAL DOUBLE MONOCHROMATORS

被引：12
作者：
POPOVICI, M
YELON, WB
机构：
[1] Missouri University Research Reactor, Columbia
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1994年 / 338卷 / 01期
关键词：
D O I：
10.1016/0168-9002(94)90173-2
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Design relations are given for double bent-crystal monochromators ensuring both spatial microfocusing and focusing in reciprocal space in powder diffraction. The choice of crystals for monochromators for microfocus stress scanning in steels is discussed. Design computations for an instrument at the Missouri University Research Reactor (MURR, thermal neutron flux 10(14)n/cm(2)s) with small-mosaic Cu(200) crystals are presented. The spot size can be brought down to 2.5x4mm, with a peak flux at focus approaching 10(8)ncm(2)s.
引用
收藏
页码：132 / 135
页数：4
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