Optimization of moderator assembly for neutron flux measurement: experimental and theoretical approaches

被引：3

作者：

Waheed, Abdul ^{[1
]}

Ali, Nawab ^{[2
]}

Baloch, Muzahir A. ^{[3
]}

Qureshi, Aziz A. ^{[1
]}

Munem, Eid A. ^{[4
]}

Rajput, Muhammad Usman ^{[2
]}

Jamal, Tauseef ^{[5
]}

Muhammad, Wazir ^{[6
]}

机构：

[1] COMSATS Inst Informat Technol, Phys Dept, Radiat Phys Lab, Islamabad, Pakistan

[2] Pakistan Inst Nucl Sci & Technol PINSTECH, Phys Div, Islamabad 45650, Pakistan

[3] Majmaah Univ, Dept Phys, Coll Sci, Al Zulfi, Saudi Arabia

[4] Univ Sci Malaysia, Sch Phys, Gelugor 11800, Penang, Malaysia

[5] Pakistan Inst Engn & Appl Sci PIEAS, DCIS, Islamabad 45650, Pakistan

[6] Pakistan Inst Nucl Sci & Technol PINSTECH, HPD, Islamabad 45650, Pakistan

来源：

NUCLEAR SCIENCE AND TECHNIQUES | 2017年 / 28卷 / 05期

关键词：

Am-Be and Cf-252 neutron sources; BF3 & He-3 detectors; Paraffin wax; Neutron flux; Monte Carlo simulation; PLASMA-FOCUS; EMISSION; SPECTRUM; CF-252; SETUP;

D O I：

10.1007/s41365-017-0213-z

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：

A moderator of paraffin wax assembly has been demonstrated where its thickness can be optimized to thermalize fast neutrons. The assembly is used for measuring fast neutron flux of a neutron probe at different neutron energies, using BF3 (Phi 1 '' and 2 '') and He-3(Phi 0.5 '') neutron detectors. The paraffin wax thickness was optimized at 6 cm for the neutron probe which contains an Am-Be neutron source. The experimental data are compared with Monte Carlo simulation results using MCNP5 version 1.4. Neutron flux comparison and neutron activation techniques are used for measuring neutron flux of the neutron probe to validate the optimum paraffin moderator thickness in the assembly. The neutron fluxes are measured at (1.17 +/- 0.09) x 10(5) and (1.19 +/- 0.1) x 10(5) n/s, being in agreement with the simulated values. The moderator assembly can easily be utilized for essential requirements of neutron flux measurements.

引用

页数：6

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