ENERGY AND POLARIZATION-TUNABLE X-RAY QUARTER-WAVE PLATES FOR ENERGY-DISPERSIVE ABSORPTION SPECTROMETER

被引：35

作者：

GILES, C

MALGRANGE, C

GOULON, J

DEBERGEVIN, F

VETTIER, C

FONTAINE, A

DARTYGE, E

PIZZINI, S

机构：

[1] UNIV J FOURIER GRENOBLE,CRSITALLOG LAB,CNRS,F-38042 GRENOBLE 09,FRANCE

[2] UNIV PARIS 11,MEN,CEA,CNRS,LURE,MIXTE LAB,F-91405 ORSAY,FRANCE

[3] UNIVP ARIS 07,F-75252 PARIS 05,FRANCE

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1994年 / 349卷 / 2-3期

关键词：

D O I：

10.1016/0168-9002(94)91235-1

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Diamond crystals inserted in an energy dispersive setup are shown to be efficient quarter-wave plates at transforming a linearly polarized X-ray beam into a circularly polarized one. Circular magnetic X-ray dichroism (CMXD) spectra have been recorded at different absorption edges demonstrating the energy tunability of the device. CMXD spectra have also been obtained by switching the helicity of the circular polarization, i.e., flipping the quarter-wave plate between two opposite angular offsets from the Bragg peak. This development opens new classes of experiments.

引用

页码：622 / 625

页数：4

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