OPTICAL METHOD BASED ON A GASEOUS SCINTILLATOR FOR NEUTRON ENERGY SPECTRUM MEASUREMENTS
Abstract
The neutron energy spectrum is one of the most important characteristic parameters. A novel optical measurement method is proposed. The purpose of the method is to determine the neutron spectra according to the recoil proton track length. The recoil protons deposit energy along the track and excite scintillator luminescence. The luminescence image directly reflects the neutron energy spectra. The Geant4 simulation toolkit is used to study the characteristics of the recoil proton luminescence distribution and determine the detector system response. A reconstruction algorithm based on the potential reduction interior point is developed and applied to spectrum unfolding. This method has the advantages of an intuitive measurement, good energy resolution, suitability for various charged particle beams, a wide energy range, convenience, and an adjustable range.
Supporting agencies: Financial support from the Opening Foundation of State Key Laboratory of Intense Pulsed Radiation Simulation and Effect are gratefully acknowledged
About the Authors
Guanying Wang
Institute of Microelectronics, Chinese Academy of Sciences
China
Beijing, 100029
China
Beijing, 100029
Lijun Zhang
Institute of Microelectronics, Chinese Academy of Sciences
China
Beijing, 100029
China
Beijing, 100029
Wengang Song
Institute of Microelectronics, Chinese Academy of Sciences
China
Beijing, 100029
China
Beijing, 100029
Lingxin Chen
Institute of Microelectronics, Chinese Academy of Sciences
China
Beijing, 100029
China
Beijing, 100029
Qiang Li
Institute of Microelectronics, Chinese Academy of Sciences;
Anhui University
China
Beijing, 100029;
Hefei, 230601
China
Beijing, 100029;
Hefei, 230601
Zhanqi Zheng
Institute of Microelectronics, Chinese Academy of Sciences
China
Beijing, 100029
China
Beijing, 100029
Ran Han
Beijing Institute of Spacecraft Environment Engineering
China
Beijing, 100029
China
Beijing, 100029
Xiaoping Ouyan
Northwest Institute of Nuclear Technology
China
Xi'an, 710024
China
Xi'an, 710024
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Review
For citations:
Wang G., Zhang L., Song W., Chen L., Li Q., Zheng Zh., Han R., Ouyan X. OPTICAL METHOD BASED ON A GASEOUS SCINTILLATOR FOR NEUTRON ENERGY SPECTRUM MEASUREMENTS. Zhurnal Prikladnoii Spektroskopii. 2020;87(5):839-846.
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