Growing solid deuterium for UCN production

Growing solid deuterium for UCN production

We have experimentally studied growing a large (about 1 liter) ortho-deuterium crystal in a real UCN source cryostat and recorded the growing process optically using a camera. The best quality was observed when growing the crystal directly from a vapor phase. The crystal was grown at different mass...

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Veröffentlicht in:Journal of neutron research 2022-01, Vol.24 (2), p.179-191
Hauptverfasser: Korobkina, Ekaterina, Berkutov, Igor, Golub, Robert, Huffman, Paul, Hickman, Clark, Leung, Kent, Medlin, Graham, Morano, Matthew J., Rao, Thomas, Teander, Cole, White, Christian, Young, Albert R.
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container_end_page 191
container_issue 2
container_start_page 179
container_title Journal of neutron research
container_volume 24
creator Korobkina, Ekaterina
Berkutov, Igor
Golub, Robert
Huffman, Paul
Hickman, Clark
Leung, Kent
Medlin, Graham
Morano, Matthew J.
Rao, Thomas
Teander, Cole
White, Christian
Young, Albert R.
description We have experimentally studied growing a large (about 1 liter) ortho-deuterium crystal in a real UCN source cryostat and recorded the growing process optically using a camera. The best quality was observed when growing the crystal directly from a vapor phase. The crystal was grown at different mass flows of deuterium and annealed at different temperatures. Optimum conditions were found for both, obtaining an optically transparent crystal and cooling it down with minimal damage. We found that the quality, final shape and changes during annealing of the crystal are very much dependent on the temperature profile of the cryostat walls.
doi_str_mv 10.3233/JNR-220010
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