Phase correction method in a wide detector plane for MIEZE spectroscopy with pulsed neutron beams
Phase correction method in a wide detector plane for MIEZE spectroscopy with pulsed neutron beams
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脉冲中子束 MIEZE 光谱宽探测器平面相位校正方法
DOI:
10.1016/j.nima.2021.165616
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Kawabata Yuji
中科院分区:
文献类型:
--
作者:
Oda Tatsuro;Endo Hitoshi;Ohshita Hidetoshi;Seya Tomohiro;Yasu Yoshiji;Nakajima Taro;Hino Masahiro;Kawabata Yuji
In this study, we propose a phase correction method for a type of neutron spin echo spectroscopy, known as modulation of intensity with zero effort using a time-of-flight method (TOF-MIEZE). The phase of the MIEZE signal sensitively varies with the neutron flight path lengths. The geometrical lengths from the sample position to the flat detector plane differ depending on the positions on the detector plane. Integrating the phase-shifted signals may decrease the signal contrast solely through the geometrical path-length deviations. To measure the decrement of contrast accurately, which corresponds to the intermediate scattering function, the position-dependent phase shifts must be corrected. The data correction is performed by shifting the MIEZE signal in time depending on path-length deviations, the MIEZE frequency, and neutron wavelengths. In the calculation of path-length deviations, the sample is assumed to be a point scatterer while a detector inclination is taken into account. We also discuss the relation between the frequency shift of TOF-MIEZE signal and path-length deviation, which is helpful to quantify phase shifts larger than 2 π. The presented phase correction method is demonstrated with a 32× 32 cm 2 area detector for a 200 kHz TOF-MIEZE signal scattered from an elastic sample.
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DOI:
10.1016/j.nima.2013.03.010
发表时间:
2013
影响因子:
1.4
作者:
T. Weber;G. Brandl;R. Georgii;W. Haussler;S. Weichselbaumer;P. Boni
通讯作者:
P. Boni
影响因子:
--
作者:
MEZEI, F
通讯作者:
MEZEI, F
DOI:
10.1007/3-540-45823-9_15
发表时间:
2002
期刊:
--
影响因子:
--
作者:
M. Bleuel;F. Demmel;R. Gähler;R. Golub;K. Habicht;T. Keller;S. Klimko;I. Köper;S. Longeville;S. Prokudaylo
通讯作者:
S. Prokudaylo
影响因子:
1.7
作者:
C. Franz;S. Säubert;A. Wendl;F. Haslbeck;O. Soltwedel;J. Jochum;L. Spitz;J. Kindervater;A. Bauer;P. Böni;C. Pfleiderer
通讯作者:
C. Pfleiderer
影响因子:
4.6
作者:
Oda Tatsuro;Hino Masahiro;Endo Hitoshi;Seto Hideki;Kawabata Yuji
通讯作者:
Kawabata Yuji