Use of 4He-filled proportional counters as neutron spectrometers

被引:13
作者
Weyrauch, M [1 ]
Casnati, A
Schillebeeckx, P
Clapham, M
机构
[1] Phys Tech Bundesanstalt, D-38116 Braunschweig, Germany
[2] Commiss European Communities, Joint Res Ctr, Inst Syst Informat & Safety, I-21020 Ispra, Italy
[3] BNFL Instruments Ltd, Calderbridge CA20 1DB, Cumbria, England
关键词
D O I
10.1016/S0168-9002(97)01132-7
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
Neutron response functions of two commercially available cylindrical He-4-filled proportional counters (filling pressure about 2 MPa) have been measured in the neutron energy range 144-14000 keV. Measurements were carried out using optimal settings for the detector high voltage and amplifier shaping time which were determined within the scope of this study. The experimental results have been analyzed and compared to calculated response functions using empirically determined energy and resolution calibration functions. The theoretically determined response functions show good agreement with the measured response except for energies above 10 MeV. The discrepancies are attributed to unsatisfactory electronics. The Monte-Carlo code Gas-filled neutron spectrometer response (GNSR) which has been developed for the calculation of response functions and efficiencies of gas-filled neutron detectors, is briefly described. (C) 1998 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:442 / 454
页数:13
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