Published September 1, 2003
| Version v1
Journal article
Ortho-para equilibrium in a liquid D2 neutron moderator under irradiation
Creators
- Atchison, F.1, 2, 3, 4, 5
- Beaud, P.1, 2, 3, 4, 5
- Brys, T.1, 2, 3, 4, 5
- Daum, M.1, 2, 3, 4, 5
- Fierlinger, P.1, 2, 3, 4, 5
- Henneck, R.1, 2, 3, 4, 5
- Hofmann, T.1, 2, 3, 4, 5
- Kirch, K.1, 2, 3, 4, 5
- Kuehne, G.1, 2, 3, 4, 5
- Knopp, G.1, 2, 3, 4, 5
- Pichlmaier, A.1, 2, 3, 4, 5
- Serebrov, A.1, 2, 3, 4, 5
- Spitzer, H.1, 2, 3, 4, 5
- Wambach, J.1, 2, 3, 4, 5
- Wimmer, J.1, 2, 3, 4, 5
- Wokaun, A.1, 2, 3, 4, 5
- Bodek, K.1, 2, 3, 4, 5
- Geltenbort, P.1, 2, 3, 4, 5
- Giersch, M.1, 2, 3, 4, 5
- Zmeskal, J.1, 2, 3, 4, 5
- and others
- 1. Research Center for Nuclear Physics, Osaka (Japan)
- 2. Institute for Medium Energy Physics, Austrian Academy of Sciences, Vienna (Austria)
- 3. Institut Laue-Langevin, Grenoble (France)
- 4. Institute of Physics, Jagiellonian University, Cracow (Poland)
- 5. Paul Scherrer Institut, CH-5232 Villigen PSI (Switzerland)
Description
The ortho-D2 concentration of gas samples taken from the liquid D2 cold moderator of the SINQ spallation neutron source at PSI has been measured. A value of co=0.762±0.001(statistical)±0.006(systematical) for the in situ quasiequilibrium at a temperature of 25 K and at an almost continuous power deposition of 230±50 mW/g is established for samples taken after long irradiation periods. This unexpectedly low value, coeq(25 K)=0.955, is explained by a simple radiation-induced breakup and recombination model for D2 molecules
Additional details
Identifiers
Publishing Information
- Journal Title
- Physical Review. B, Condensed Matter and Materials Physics
- Journal Volume
- 68
- Journal Issue
- 9
- Journal Page Range
- p. 094114-094114.7
- ISSN
- 1098-0121
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 36005664
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S36: MATERIALS SCIENCE; S43: PARTICLE ACCELERATORS;
- Descriptors DEI
- DEPOSITION; DEUTERIUM; EQUILIBRIUM; IRRADIATION; LIQUIDS; MODERATORS; NEUTRON SOURCES; NEUTRONS; RECOMBINATION; SPALLATION; TEMPERATURE RANGE 0013-0065 K
- Descriptors DEC
- BARYONS; ELEMENTARY PARTICLES; FERMIONS; FLUIDS; HADRONS; HYDROGEN ISOTOPES; ISOTOPES; LIGHT NUCLEI; NUCLEAR REACTIONS; NUCLEI; NUCLEONS; ODD-ODD NUCLEI; PARTICLE SOURCES; RADIATION SOURCES; STABLE ISOTOPES; TEMPERATURE RANGE
Optional Information
- Notes
- (c) 2003 The American Physical Society