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Updated: Jan 29, 2026
08:21
Curation of Computational Chemical Libraries Demonstrated with Alpha-Amino Acids
Published on: April 13, 2022
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Simulation study of alpha-neutron reactions from AmBe directional source using MCNP 6.1.1 with TENDL 2012, 2014, and
Kyle M Paaren1, Hyoung Koo Lee1
1Missouri University of Science and Technology, 222 Fulton Hall 301 W. 14th St., Rolla, MO, 65401, USA.
Summary
Simulations using MCNP and TENDL data explored neutron emission from beryllium-9 (9Be) bombarded by alpha particles. This research determined secondary neutron direction and energy, crucial for neutron imaging applications.
Area of Science:
- Nuclear physics
- Computational physics
Background:
- Neutron imaging requires precise knowledge of neutron energy and direction.
- The 9Be(α, n)12C reaction is a potential neutron source, but its angular dependence needs detailed study.
Purpose of the Study:
- To simulate the angular dependence of neutron emission from the 9Be(α, n)12C reaction.
- To determine secondary neutron direction and energy for neutron imaging applications.
- To compare simulation results using different TENDL library versions.
Main Methods:
- Monte Carlo N-Particle (MCNP) transport code was used for simulations.
- TALYS-generated nuclear data (TENDL 2012, 2014, 2017) processed by NJOY2016 was employed.
- Simulations utilized a 90 μCi 241Am source and a 25 μm 9Be target.
Main Results:
- Angular and energy dependence of secondary neutrons were observed across TENDL 2012, 2014, and 2017 libraries.
- Total neutron production and neutron spectrum were calculated and compared to previous studies.
- Discrepancies with prior work were identified and discussed.
Conclusions:
- The study successfully simulated neutron emission characteristics for potential use in neutron imaging.
- Observed angular and energy dependencies provide valuable data for refining neutron imaging techniques.
- Future work will involve comparison with experimental data to validate simulation results.
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