ON THE SAGITTAL FOCUSING OF SYNCHROTRON RADIATION WITH A DOUBLE CRYSTAL MONOCHROMATOR

被引：32

作者：

KUSHNIR, VI ^{[1
]}

QUINTANA, JP ^{[1
]}

GEORGOPOULOS, P ^{[1
]}

机构：

[1] NORTHWESTERN UNIV,ROBERT R MCCORMICK SCH ENGN & APPL SCI,DUNU SYNCHROTRON RES CTR,EVANSTON,IL 60201

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1993年 / 328卷 / 03期

关键词：

D O I：

10.1016/0168-9002(93)90679-C

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A method to avoid the anticlastic bending of the second crystal in a two-crystal monochromator for synchrotron radiation is proposed. It is analytically shown that the anticlastic curvature is zero at the center of the crystal for a simply supported isotropic crystal loaded with a constant moment provided that the crystal's aspect ratio is equal to a ''golden value'' dependent on the Poisson coefficient nu. For nu = 0.262 (equal to nu in the Si(111) plane) this ratio is 2.360. Finite element results are presented on the case of the clamped crystal and show that there is a similar ''golden value'' approximately equal to 1.42 for nu = 0.262.

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页码：588 / 591

页数：4

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