High efficiency multichannel collimator for structural studies of liquids and low-Z materials at high pressures and temperatures

被引：28

作者：

Morard, G. ^{[1
,2
]}

Mezouar, M. ^{[3
]}

Bauchau, S. ^{[3
]}

Alvarez-Murga, M. ^{[3
,4
]}

Hodeau, J. -L. ^{[4
]}

Garbarino, G. ^{[3
]}

机构：

[1] Univ Paris Diderot, Univ Paris 06, CNRS, UMR 7590,Inst Mineral & Phys Milieux, F-75005 Paris, France

[2] Univ Paris Diderot, Univ Paris 06, Inst Phys Globe Paris, F-75005 Paris, France

[3] European Synchrotron Radiat Facil, F-38043 Grenoble, France

[4] CNRS, UPR 2940, IN, F-38042 Grenoble, France

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2011年 / 82卷 / 02期

关键词：

X-RAY-DIFFRACTION; PLANETARY CORES; C-60; FULLERENES; SYSTEM;

D O I：

10.1063/1.3551988

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A high efficiency multichannel collimator (MCC) device has been developed at the high pressure beamline ID27 of the European Synchrotron Radiation Facility to drastically reduce the x-ray background from the sample environment in the Paris-Edinburgh press. The main technical difficulty, which resides in the minimum slits size achievable using the classical mono-bloc design, has been resolved using an original concept based on a set of independent slits. Then, a very small slit size of 50 mu m was manufactured resulting in a great improvement of the signal to background ratio. In addition, the transfer function of the MCC has been measured using the x-ray diffusion signal of a metal doped glass and efficiently applied to correct the raw data. The potential of this new device is illustrated in two challenging examples: iron-sulfur liquid structures and C-60 polymerization process at high pressure and high temperature. (C) 2011 American Institute of Physics. [doi:10.1063/1.3551988]

引用

页数：6

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