Practical in-situ determination of ortho-para hydrogen ratios via fiber-optic based Raman spectroscopy
Abstract
An experiment was designed and developed to prototype a fiber-optic-based laser system, which measures the ratio of ortho-hydrogen to para-hydrogen in an operating neutron moderator system at the Los Alamos Neutron Science Center (LANSCE) spallation neutron source. Preliminary measurements resulted in an ortho to para ratio of 3.06:1, which is within acceptable agreement with the previously published ratio. As a result, the successful demonstration of Raman Spectroscopy for this measurement is expected to lead to a practical method that can be applied for similar in-situ measurements at operating neutron spallation sources.
- Authors:
-
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1234428
- Alternate Identifier(s):
- OSTI ID: 1397581
- Report Number(s):
- LA-UR-15-25422
Journal ID: ISSN 0168-9002; PII: S016890021501579X
- Grant/Contract Number:
- AC52-06NA253996
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
- Additional Journal Information:
- Journal Volume: 810; Journal Issue: C; Journal ID: ISSN 0168-9002
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 43 PARTICLE ACCELERATORS; ortho-para hydrogen; Raman spectroscopy; fiber-optic; accelerator target; neutron spallation source
Citation Formats
Sutherland, Liese -Marie, Knudson, James N., Mocko, Michal, and Renneke, Richard M. Practical in-situ determination of ortho-para hydrogen ratios via fiber-optic based Raman spectroscopy. United States: N. p., 2015.
Web. doi:10.1016/j.nima.2015.12.009.
Sutherland, Liese -Marie, Knudson, James N., Mocko, Michal, & Renneke, Richard M. Practical in-situ determination of ortho-para hydrogen ratios via fiber-optic based Raman spectroscopy. United States. https://doi.org/10.1016/j.nima.2015.12.009
Sutherland, Liese -Marie, Knudson, James N., Mocko, Michal, and Renneke, Richard M. 2015.
"Practical in-situ determination of ortho-para hydrogen ratios via fiber-optic based Raman spectroscopy". United States. https://doi.org/10.1016/j.nima.2015.12.009. https://www.osti.gov/servlets/purl/1234428.
@article{osti_1234428,
title = {Practical in-situ determination of ortho-para hydrogen ratios via fiber-optic based Raman spectroscopy},
author = {Sutherland, Liese -Marie and Knudson, James N. and Mocko, Michal and Renneke, Richard M.},
abstractNote = {An experiment was designed and developed to prototype a fiber-optic-based laser system, which measures the ratio of ortho-hydrogen to para-hydrogen in an operating neutron moderator system at the Los Alamos Neutron Science Center (LANSCE) spallation neutron source. Preliminary measurements resulted in an ortho to para ratio of 3.06:1, which is within acceptable agreement with the previously published ratio. As a result, the successful demonstration of Raman Spectroscopy for this measurement is expected to lead to a practical method that can be applied for similar in-situ measurements at operating neutron spallation sources.},
doi = {10.1016/j.nima.2015.12.009},
url = {https://www.osti.gov/biblio/1234428},
journal = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},
issn = {0168-9002},
number = C,
volume = 810,
place = {United States},
year = {Thu Dec 17 00:00:00 EST 2015},
month = {Thu Dec 17 00:00:00 EST 2015}
}
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Works referenced in this record:
The Los Alamos Neutron Science Center
journal, June 2006
- Lisowski, Paul W.; Schoenberg, Kurt F.
- Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 562, Issue 2
Fourth-generation spallation neutron target-moderator-reflector-shield assembly at the Manuel Lujan Jr. neutron scattering center
journal, March 2013
- Mocko, M.; Muhrer, G.
- Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 704
Molecular interactions in the condensed phases of ortho-para hydrogen mixtures
journal, July 1975
- Fleury, P. A.; McTague, J. P.
- Physical Review A, Vol. 12, Issue 1
Works referencing / citing this record:
Quantitative In Situ Monitoring of Parahydrogen Fraction Using Raman Spectroscopy
journal, September 2018
- Parrott, Andrew J.; Dallin, Paul; Andrews, John
- Applied Spectroscopy