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 language | English (US) |
|---|---|
| Article number | 303 |
| Pages (from-to) | 473-476 |
| Number of pages | 4 |
| Journal | Journal of Physics E: Scientific Instruments |
| Volume | 2 |
| Issue number | 6 |
| DOIs | |
| State | Published - 1969 |
ASJC Scopus subject areas
- General Engineering
- Instrumentation
- General Materials Science
- General Physics and Astronomy