Simulation of high-pressure micro-capillary 3He counters
Abstract
Low-pressure (1–4 atm) cylindrical 3He counters are widely used as neutron detectors. These detectors are relatively large (1–2.5 cm diameter) and can be subject to noise induced by microphonics. Meanwhile, new advancements in micro-fabrication are enabling the manufacture of high-pressure (over 3000 atm) micro-capillaries (~100 µm diameter). Can these micro-capillaries be used as accurate and high-efficiency 3He counters? To answer these questions, we have developed a mathematical model/computer simulation. Our model shows that such capillaries have the potential for being high-efficiency neutron spectrometers capable of resolving not only energy, but also angle of incidence for fixed sources. Finally, we benchmark the model against published results and extrapolate spectra to the pressures of interest.
- Authors:
-
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Publication Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1426965
- Report Number(s):
- SAND-2007-1296J
Journal ID: ISSN 0954-3899; 526741
- Grant/Contract Number:
- AC04-94AL85000
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Physics. G, Nuclear and Particle Physics
- Additional Journal Information:
- Journal Volume: 35; Journal Issue: 11; Journal ID: ISSN 0954-3899
- Publisher:
- IOP Publishing
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Citation Formats
Martin, Shawn Bryan, Chandler, Gordon, and Derzon, Mark Steven. Simulation of high-pressure micro-capillary 3He counters. United States: N. p., 2008.
Web. doi:10.1088/0954-3899/35/11/115103.
Martin, Shawn Bryan, Chandler, Gordon, & Derzon, Mark Steven. Simulation of high-pressure micro-capillary 3He counters. United States. https://doi.org/10.1088/0954-3899/35/11/115103
Martin, Shawn Bryan, Chandler, Gordon, and Derzon, Mark Steven. Fri .
"Simulation of high-pressure micro-capillary 3He counters". United States. https://doi.org/10.1088/0954-3899/35/11/115103. https://www.osti.gov/servlets/purl/1426965.
@article{osti_1426965,
title = {Simulation of high-pressure micro-capillary 3He counters},
author = {Martin, Shawn Bryan and Chandler, Gordon and Derzon, Mark Steven},
abstractNote = {Low-pressure (1–4 atm) cylindrical 3He counters are widely used as neutron detectors. These detectors are relatively large (1–2.5 cm diameter) and can be subject to noise induced by microphonics. Meanwhile, new advancements in micro-fabrication are enabling the manufacture of high-pressure (over 3000 atm) micro-capillaries (~100 µm diameter). Can these micro-capillaries be used as accurate and high-efficiency 3He counters? To answer these questions, we have developed a mathematical model/computer simulation. Our model shows that such capillaries have the potential for being high-efficiency neutron spectrometers capable of resolving not only energy, but also angle of incidence for fixed sources. Finally, we benchmark the model against published results and extrapolate spectra to the pressures of interest.},
doi = {10.1088/0954-3899/35/11/115103},
journal = {Journal of Physics. G, Nuclear and Particle Physics},
number = 11,
volume = 35,
place = {United States},
year = {Fri Sep 26 00:00:00 EDT 2008},
month = {Fri Sep 26 00:00:00 EDT 2008}
}
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