Pseudo-random time modulation technique for neutron diffraction instruments on compact accelerator-driven neutron sources

被引:1
|
作者
Ott, Frederic [1 ]
机构
[1] Univ Paris Saclay, CNRS, Lab Leon Brillouin, CEA, F-91191 Gif Sur Yvette, France
关键词
Neutron diffraction; neutron scattering; compact neutron source; time modulation methods; statistical chopper; OF-FLIGHT SPECTROMETER; FOURIER DIFFRACTOMETER; OVERLAP;
D O I
10.3233/JNR-220042
中图分类号
TL [原子能技术]; O571 [原子核物理学];
学科分类号
0827 ; 082701 ;
摘要
Time modulation methods are routinely used on neutron scattering time-of-flight instruments, which exploit the time structure of neutron pulses for energy determination. In the past, complex time modulation methods were proposed, either to maximize the neutron flux which can be used, or to increase the energy resolution of the measurements. In this article, we explore the possibilities offered by such methods and in particular random modulation using statistical choppers to improve the performances of the DIoGENE scattering instrument installed around the IPHI-neutron CANS source at Saclay. We conclude that when the source is operated in continuous mode, the implementation of a statistical chopper is very efficient to perform either metallurgical studies such as strain scanning or phase transition studies. Random modulation techniques may be easily and efficiently implemented because the high capacity of modern computers enables high-speed data processing from large surface pixelated detectors.
引用
收藏
页码:1 / 12
页数:12
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