First results with the upgraded IN5 disk chopper cold time-of-flight spectrometer

被引：29

作者：

Ollivier, J

Plazanet, M

Schober, H

Cook, JC

机构：

[1] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France

[2] Univ Maryland, Dept Mat & Nucl Engn, College Pk, MD 20742 USA

来源：

PHYSICA B-CONDENSED MATTER | 2004年 / 350卷 / 1-3期

关键词：

time-of-flight; inelastic neutron scattering; instrumentation;

D O I：

10.1016/j.physb.2004.04.022

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The primary spectrometer of the cold time-of-flight instrument IN5 at the ILL has been upgraded over the last 2 years. After commissioning in spring 2003 the absolute gain in flux when compared to the former spectrometer setting has been measured by gold-foil activation. Within standard configuration, namely, an incident wavelength of lambda= 5 Angstrom and chopper speeds chosen such that they correspond to identical energy resolution (deltaE similar or equal to 100 mueV) and time frame, the flux has been found an order of magnitude higher on the upgraded instrument. Apart from the gain in flux the new spectrometer allows to work with appreciably improved resolution (up to a factor 2) at identical wavelength. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：173 / 177

页数：5

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