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公开(公告)号:US6003321A
公开(公告)日:1999-12-21
申请号:US60475
申请日:1998-04-15
CPC分类号: G01N23/20033 , F17C3/085 , F17C2203/0391 , F17C2203/0629 , F17C2203/0641 , F17C2205/0332 , F17C2221/017 , F17C2223/0161 , F17C2227/0337
摘要: An open flow helium cryostat system for cooling a sample crystal to be examined using X-ray diffraction, neutron diffraction, or a similar method. The cryostat system including a primary helium supply to provide a first stream of liquid helium onto the sample crystal and a secondary helium supply to provide a second stream of gaseous helium around at least a portion of the primary helium supply at a temperature warmer than the first stream of liquid helium to prevent the formation of ice on the sample crystal.
摘要翻译: 用于使用X射线衍射,中子衍射或类似方法冷却要检查的样品晶体的开放式氦低温恒温器系统。 低温恒温器系统包括主氦气源,以在样品晶体上提供液态氦的第一流,以及辅助氦气供应源,以在比第一氦气温度更高的温度下提供第二气态氦气流在氦气源的至少一部分周围 液态氦气流,以防止在样品晶体上形成冰。