A comparison of four direct geometry time-of-flight spectrometers at the Spallation Neutron Source

被引：111
|
作者：
Stone, M. B. [1 ]
Niedziela, J. L. [2 ]
Abernathy, D. L. [1 ]
DeBeer-Schmitt, L. [2 ]
Ehlers, G. [1 ]
Garlea, O. [1 ]
Granroth, G. E. [3 ]
Graves-Brook, M. [2 ]
Kolesnikov, A. I. [4 ]
Podlesnyak, A. [1 ]
Winn, B. [1 ]
机构：
[1] Oak Ridge Natl Lab, Quantum Condensed Matter Sci Div, Oak Ridge, TN 37831 USA
[2] Oak Ridge Natl Lab, Instrument & Source Div, Oak Ridge, TN 37831 USA
[3] Oak Ridge Natl Lab, Neutron Data Anal & Visualizat Div, Oak Ridge, TN 37831 USA
[4] Oak Ridge Natl Lab, Chem & Engn Mat Div, Oak Ridge, TN 37831 USA
来源：
REVIEW OF SCIENTIFIC INSTRUMENTS | 2014年 / 85卷 / 04期
关键词：
CHOPPER SPECTROMETER;
D O I：
10.1063/1.4870050
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The Spallation Neutron Source at Oak Ridge National Laboratory now hosts four direct geometry time-of-flight chopper spectrometers. These instruments cover a range of wave-vector and energy transfer space with varying degrees of neutron flux and resolution. The regions of reciprocal and energy space available to measure at these instruments are not exclusive and overlap significantly. We present a direct comparison of the capabilities of this instrumentation, conducted by data mining the instrument usage histories, and specific scanning regimes. In addition, one of the common science missions for these instruments is the study of magnetic excitations in condensed matter systems. We have measured the powder averaged spin wave spectra in one particular sample using each of these instruments, and use these data in our comparisons. (C) 2014 AIP Publishing LLC.
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页数：13
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