A bakeable, demountable field ion microscope with a continuous transfer liquid helium cryostat
- 1 July 1969
- journal article
- Published by IOP Publishing in Journal of Physics E: Scientific Instruments
- Vol. 2 (7) , 575-578
- https://doi.org/10.1088/0022-3735/2/7/305
Abstract
A stainless field ion microscope head which is bakeable to 250°C and completely demountable is described, and the operational characteristics are presented. The microscope employs the continuous flow technique to cool the specimen cryogenically between 42 and 78°K. The liquid helium consumption varies from 085 l h−1 to 0133 l h−1 between 117 and 348°K, with a pressure of 25 mtorr helium inside the microscope. The field ion microscope head is particularly well suited for hydrogen promotion experiments. An example of a gold specimen imaged by the latter technique in the present microscope is given.Keywords
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