Safety considerations with top-loading cryostats, involving 'icing-up' of the sample space with solid air

被引：1

作者：

Swainson, Ian Peter ^{[1
]}

Cranswick, Lachlan Michael David ^{[1
]}

机构：

[1] Natl Res Council Canada, Chalk River Labs, Chalk River, ON K0J 1J0, Canada

来源：

JOURNAL OF APPLIED CRYSTALLOGRAPHY | 2010年 / 43卷

关键词：

Cryostats; Icing-up; Laboratory safety; Low-temperature diffraction; Vacuum leaks;

D O I：

10.1107/S0021889809049693

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Safety considerations involving 'icing-up' with solid air of the sample space of top-loading cryostat equipment are discussed, where uncontrolled de-icing may cause a flash-to-gas, leading to trapped volumes being placed under high pressure. Methods of prevention and resolution of freeze-ups are elaborated, and a case is made for using a helium leak detector as part of sample changing and a heating wire wrapped around the sample stick for de-icing.

引用

页码：206 / 210

页数：5

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