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Proceedings Paper

Accelerator neutron sources for neutron capture therapy using near-threshold charged particle reactions
Author(s): Yale D. Harker; Frank Harmon; James Seamans Jr.; Scott Serrano; William Trammell; Luther Yost; Xiao-Lin Zhou; Robert W. Hamm
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Paper Abstract

Compact neutron sources for neutron capture therapy hold the promise of permitting wide availability for this therapeutic modality for cancer treatment. Most accelerator based neutron source concepts for this purpose are centered on (p,n) reactions using bombarding energies several hundred keV to 1-2 MeV above the reaction threshold producing high neutron yield. The neutron energies in the range of hundreds of keV to 1-2 MeV require considerable moderation and/or filtration, which reduces the output epithermal neutron flux, and fast neutron contamination is always present. Operating with proton energies closer to the threshold decreases neutron yield but allows for smaller, more efficient filters and moderators, which results in less reduction of the epithermal flux by the moderator/filter assembly. Work by this collaboration is examining the balance between total neutron yield and filter/modulator efficiency in order to achieve intense epithermal beams with low fast neutron contamination. As the first stage of this project, neutron yield and spectrum measurements on 9Be(p,n) and 7Li(p,n) reactions have been made and the results will be presented along with neutronic calculations for these systems. A radio frequency quadrupole accelerator is being used in this work.

Paper Details

Date Published: 27 February 1997
PDF: 4 pages
Proc. SPIE 2867, International Conference Neutrons in Research and Industry, (27 February 1997); doi: 10.1117/12.267872
Show Author Affiliations
Yale D. Harker, Idaho National Engineering Lab. (United States)
Frank Harmon, Idaho State Univ. (United States)
James Seamans Jr., Idaho State Univ. (United States)
Scott Serrano, Idaho State Univ. (United States)
William Trammell, Idaho State Univ. (United States)
Luther Yost, Idaho State Univ. (United States)
Xiao-Lin Zhou, Massachusetts Institute of Technology (United States)
Robert W. Hamm, AccSys Technology, Inc. (United States)

Published in SPIE Proceedings Vol. 2867:
International Conference Neutrons in Research and Industry
George Vourvopoulos, Editor(s)

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