为UCN生产固体氘

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2022-08-08 DOI:10.3233/jnr-220010

E. Korobkina, I. Berkutov, R. Golub, P. Huffman, Clark Hickman, Kent Leung, G. Medlin, Matthew J. Morano, Thomas Rao, Cole Teander, C. White, A. Young

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引用次数: 1

摘要

我们实验研究了在一个真实的UCN源低温恒温器中生长一个大的(约1升)固体正交氘晶体，并使用相机光学记录了生长过程。当直接从气相生长晶体时，观察到最好的质量。晶体在不同质量的氘流中生长，并在不同温度下退火。找到了两者的最佳条件，获得了光学透明的晶体，并以最小的损伤将其冷却。我们发现晶体的质量、最终形状和退火过程中的变化在很大程度上取决于低温恒温器壁的温度分布。

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Growing solid deuterium for UCN production

We have experimentally studied growing a large (about 1 liter) solid 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.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.