Design and performance considerations for perforated semiconductor thermal-neutron detectors
| Autor: | Douglas S. McGregor, J.K. Shultis |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Physics
Nuclear and High Energy Physics Silicon Physics::Instrumentation and Detectors business.industry Monte Carlo method Detector chemistry.chemical_element Neutron temperature Computer Science::Other Semiconductor chemistry Trench Optoelectronics Neutron business Instrumentation Reactive material |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 606:608-636 |
| ISSN: | 0168-9002 |
| DOI: | 10.1016/j.nima.2009.02.033 |
| Popis: | Perforated silicon structures backfilled with either B 10 or LiF 6 are presently under construction as high efficiency thermal-neutron detectors. Although many perforated structures are possible, there are three fundamental designs that are studied in the present work, namely (a) cylindrical perforations where holes are filled with neutron reactive material, (b) pillar configurations where semiconductor pillars are surrounded by neutron reactive material, and (c) trench structures where the trenches are filled with neutron reactive material. From results of Monte Carlo simulations, it is found that the trench structure affords the best efficiencies, exceeding 20% using conservative geometries, and over 35% for more aggressive structures. Simulated spectroscopic features and manufacturing constraints are presented and discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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