acrobat
发表于 2025-3-28 17:51:53
http://reply.papertrans.cn/32/3189/318855/318855_41.png
Organonitrile
发表于 2025-3-28 19:16:50
http://reply.papertrans.cn/32/3189/318855/318855_42.png
interior
发表于 2025-3-29 01:30:59
https://doi.org/10.1007/978-3-642-61801-7Metal tips are required in field electron and field ion microscopy, as well as in scanning tunneling microscopy. One method for preparing such tips is to use zone electropolishing while viewing the process under an optical microscope (Melmed and Carroll in J Vac Sci Technol A2:1388, .; Lemke et al in Rev Sci Instrum 61:2538, .).
Physiatrist
发表于 2025-3-29 04:38:22
http://reply.papertrans.cn/32/3189/318855/318855_44.png
指耕作
发表于 2025-3-29 10:57:35
http://reply.papertrans.cn/32/3189/318855/318855_45.png
AORTA
发表于 2025-3-29 12:57:44
BakeoutThe removal of adsorbed impurities from the walls of an ultrahigh, vacuum system is carried out by heating the walls uniformly while pumping the system. Generally, for stainless steel systems this is done in the temperature range 150–200 °C.
无目标
发表于 2025-3-29 16:14:52
http://reply.papertrans.cn/32/3189/318855/318855_47.png
现存
发表于 2025-3-29 22:30:49
Gasket SealsThe primary ultrahigh vacuum flange design used universally is the stainless steel Conflat sexless flange, which operates with two opposed knife edges that seal a metallic gasket by deformation when the flange is tightened.
Acetabulum
发表于 2025-3-29 23:53:03
Leak Repairs and DetectionHe-leak checking is commonly used, either in the shop with a portable leak detector, or in the laboratory where a mass spectrometer inside the vacuum system is used for detection. A common problem involves the detection of a small leak at some point, where subsequent investigation will show that there is really no leak at that point.
人工制品
发表于 2025-3-30 07:53:43
http://reply.papertrans.cn/32/3189/318855/318855_50.png