High efficiency multichannel collimator for structural studies of liquids and low-Z materials at high pressures and temperatures.
Rev Sci Instrum
; 82(2): 023904, 2011 Feb.
Article
em En
| MEDLINE
| ID: mdl-21361608
ABSTRACT
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 µm 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.
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Coleções:
01-internacional
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MEDLINE
Idioma:
En
Revista:
Rev Sci Instrum
Ano de publicação:
2011
Tipo de documento:
Article
País de afiliação:
França