A simple continuous transfer liquid helium cryostat for an ultra-high vacuum field ion microscope

D. N. Seidman*, R. M. Scanlan, D. L. Styris, J. W. Bohlen

*Corresponding author for this work

Research output: Contribution to journalArticle

25 Scopus citations

Abstract

A simple continuous transfer liquid helium cryostat for an ultra-high vacuum field ion microscope has been constructed. In this cryostat the liquid helium is continuously transferred from a conventional 30 or 50 1 storage vessel, employing a standard transfer line, to a small reservoir which is in direct contact with the field ion microscope specimen holder. The enthalpy of the outgoing cold helium gas is used to cool a copper radiation shield which surrounds both the specimen holder and the reservoir section of the cryostat. The economical operating temperature range of this cryostat is 8°K to room temperature with a temperature stability of better than ±0·1 degK over most of this temperature range. Details of construction and the operational characteristics are presented.

Original languageEnglish (US)
Article number303
Pages (from-to)473-476
Number of pages4
JournalJournal of Physics E: Scientific Instruments
Volume2
Issue number6
DOIs
StatePublished - Dec 1 1969

ASJC Scopus subject areas

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

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