| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1681821 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms | 2016 | 5 Pages |
Abstract
By sampling gaseous hydrogen from a circulating liquid hydrogen loop for Laser Raman spectroscopy, we measured the para-/ortho-hydrogen fractions in liquid hydrogen under neutron irradiation for the first time to identify whether irradiated hydrogen has an elevated ortho-hydrogen fraction. This measurement indicates that para-hydrogen equilibrium persists at 300 kW proton power in the presence of an iron(III) oxide hydroxide [Fe(OH)3] catalyst. The measurements will be repeated as the power at the Japan Proton Accelerator Research Complex (J-PARC) increases to the MW level.
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Authors
M. Teshigawara, M. Harada, H. Tatsumoto, T. Aso, K. Ohtsu, H. Takada, M. Futakawa, Y. Ikeda,