Research Papers in Physics and Astronomy
Boron carbide based solid state neutron detectors: The effects of bias and time constant on detection efficiency
Date of this Version
Published in Journal of Physics D: Applied Physics 43:27 (2010), 11 pp. doi:10.1088/0022-3727/43/27/275101
Neutron detection in thick boron carbide(BC)/n-type Si heterojunction diodes shows a threefold increase in efficiency with applied bias and longer time constants. The improved efficiencies resulting from long time constants have been conclusively linked to the much longer charge collection times in the BC layer. Neutron detection signals from both the p-type BC layer and the n-type Si side of the heterojunction diode are observed, with comparable efficiencies. Collectively, these provide strong evidence that the semiconducting BC layer plays an active role in neutron detection, both in neutron capture and in charge generation and collection.
Condensed Matter Physics Commons, Engineering Physics Commons, Materials Science and Engineering Commons, Nanoscience and Nanotechnology Commons
Copyright © 2010 IOP Publishing Ltd. Used by permission.