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Titolo:
ATTENUATION CORRECTIONS FOR THE PARIS-EDINBURGH CELL
Autore:
WILSON RM; LOVEDAY JS; NELMES RJ; KLOTZ S; MARSHALL WG;
Indirizzi:
UNIV EDINBURGH,DEPT PHYS & ASTRON EDINBURGH EH9 3JZ MIDLOTHIAN SCOTLAND UNIV EDINBURGH,DEPT PHYS & ASTRON EDINBURGH EH9 3JZ MIDLOTHIAN SCOTLAND UNIV PARIS 06 F-75252 PARIS 05 FRANCE
Titolo Testata:
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment
fascicolo: 1, volume: 354, anno: 1995,
pagine: 145 - 148
SICI:
0168-9002(1995)354:1<145:ACFTPC>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
DIFFRACTION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
10
Recensione:
Indirizzi per estratti:
Citazione:
R.M. Wilson et al., "ATTENUATION CORRECTIONS FOR THE PARIS-EDINBURGH CELL", Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 354(1), 1995, pp. 145-148

Abstract

The success of the Paris-Edinburgh cell in routinely reaching 10 GPa (and more recently 25 GPa during development work) means that the high-pressure physics of structures containing low-Z elements can now be investigated with neutron scattering. For basic structural studies and the determination of bulk moduli, a simple attenuation correction is sufficient in most cases. For more detailed or precise structural studies, such as obtaining realistic temperature factors at high pressures,a much more accurate evaluation of the attenuation correction is required. The incident and diffracted neutron beams travel through the anvils, sample, and the gasket, and so the correction has to take into account both the variation of the attenuation of each material with neutron energy and the differing pathlengths through a variety of materials taken by each ray. A program is currently being developed which can carry out the attenuation corrections for any shape definable by a collection of quadric surfaces. This geometric flexibility also allows usto carry out design improvements on the geometry and shielding of theanvils.

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Documento generato il 16/07/20 alle ore 15:15:10