Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
Volume 333, Issue -, Pages 6-11Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nimb.2014.04.008
Keywords
Neutron source; Neutron filter; Li-7 (p,n)Be-7 reaction; Nuclear recoil
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Funding
- Lawrence Scholars Program at LLNL
- Department of Homeland Security
- U.S. Department of Homeland Security
- Domestic Nuclear Detection Office
- U.S. Department of Defense, Defense Threat Reduction Agency
- LDRD program at LLNL [LDRD 13-FS-005]
- U.S. Department of Energy by Lawrence Livermore National Laboratory [DE-AC52-07NA27344]
- [LLNL-JRNL-651154]
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The design of a neutron source capable of producing 24 and 70 keV neutron beams with narrow energy spread is presented. The source exploits near-threshold kinematics of the Li-7 (p,n)Be-7 reaction while taking advantage of the interference 'notches' found in the scattering cross-sections of iron. The design was implemented and characterized at the Center for Accelerator Mass Spectrometry at Lawrence Livermore National Laboratory. Alternative filters such as vanadium and manganese are also explored and the possibility of studying the response of different materials to low-energy nuclear recoils using the resultant neutron beams is discussed. (C) 2014 Elsevier B.V. All rights reserved.
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