Developments in neutron Fourier time-of-flight

被引：1
|
作者：
Neulinger, Thomas [1 ]
机构：
[1] Inst Laue Langevin, F-38042 Grenoble, France
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2024年 / 1065卷
基金：
欧盟地平线“2020”;
关键词：
Time-of-flight; Fourier time-of-flight; DIFFRACTOMETER; DECONVOLUTION; SCATTERING; REACTOR;
D O I：
10.1016/j.nima.2024.169513
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Two main developments in neutron Fourier time-of-flight (TOF) are presented. The first is a new sinusoidal stator design that eliminates a systematic effect associated with triangular modulation in existing Fourier choppers. Despite sinusoidal modulation being associated with a reduction in average beam transmission, it is mathematically demonstrated that, on average and for good signal-to-background, only about 3 % additional measurement time is required to achieve equal statistical uncertainty. The second development is a new method to measure the chopper phase offset. This method relies only on symmetries inherent to the Fourier transform of any physical TOF spectrum.
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页数：14
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