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A simple Method for Determining the Effective Removal Cross Section for Fast Neutrons |
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PP: 53-58 |
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doi:10.18576/jrna/020203
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Author(s) |
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A. El Abd,
Gamal Mesbah,
Nader M. A. Mohammed,
A. Ellithi,
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Abstract |
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| A method was proposed for determining effective removal cross section (R) for fast neutrons. The source beam is obtained from a Pu-Be combined source. The transmitted fast neutrons through standards samples, of known effective removal cross sections, are recorded by fast neutron counter (FNC). This FNC consists of a He-3 neutron detector and a paraffin wax moderator was designed to minimize recording of scattered neutrons from the investigated samples. The results obtained are supported by calculation carried out using the MCNP. It was shown that the response of the FNC versus ∑R (calibration curves) can be used for determining ∑R for liquid, powder and solid samples. The advantages of the proposed method were discussed and compared with existing methods in literature. |
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