Patchariya Petchpong and David I Head 2007 Metrologia 44 L73 doi:10.1088/0026-1394/44/6/L01
Argon pressure is maintained in an aluminium thermometric fixed-point cell
FREE ARTICLEPatchariya Petchpong1 and David I Head2
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The argon and helium pressure in two types of temperature fixed-point cell enclosure has been measured for over two weeks. It was found that there was no significant change in the argon pressure over this time, in contrast to the report of Ancsin (2003 Metrologia 40 232–4). Helium was found to diffuse out of the cell as expected. We conclude that argon is a suitable 'back-fill' gas for fixed-point cells.
- PACS
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06.30.-k Measurements common to several branches of physics and astronomy
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- Dates
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Issue 6 (December 2007)
Received 31 August 2007
Published 21 November 2007
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Argon pressure is maintained in an aluminium thermometric fixed-point cell
Patchariya Petchpong and David I Head 2007 Metrologia 44 L73
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