A bakeable, demountable field ion microscope with a continuous transfer liquid helium cryostat

D. G. Ast*, D. N. Seidman

*Corresponding author for this work

Research output: Contribution to journalArticle

4 Scopus citations

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 4·2 and 78°K. The liquid helium consumption varies from 0·85 l h-1 to 0·133 l h -1 between 11·7 and 34·8°K, with a pressure of 2·5 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.

Original languageEnglish (US)
Article number305
Pages (from-to)575-578
Number of pages4
JournalJournal of Physics E: Scientific Instruments
Volume2
Issue number7
DOIs
StatePublished - Dec 1 1969

ASJC Scopus subject areas

  • Instrumentation
  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

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