CaltechAUTHORS
  A Caltech Library Service

Control of ultralow pressures: an absolute thermodynamic manometer

Taborek, Peter and Goodstein, David (1979) Control of ultralow pressures: an absolute thermodynamic manometer. Review of Scientific Instruments, 50 (2). pp. 227-230. ISSN 0034-6748. http://resolver.caltech.edu/CaltechAUTHORS:TABrsi79

[img]
Preview
PDF
See Usage Policy.

373Kb

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:TABrsi79

Abstract

A method of accurately manipulating the pressure of helium gas in the range P=10^–1 to 10^–20 Torr, T<5 K is presented. The method requires only a very modest apparatus and makes use of thermodynamic measurements on the 4He–Grafoil system. A calibration curve and a pressure scale for the manometer are developed which will allow convenient application in other laboratories. An experiment which utilizes the technique is briefly disscussed.


Item Type:Article
Additional Information:Copyright © 1979 American Institute of Physics. (Received 7 August 1978; in final form, 13 October 1978) We would like to thank O. Vilches for sending us the unpublished vapor pressure isotherm and heat capacity data taken by the Washington group. We also thank M. Bretz for sending us heat capacity data prior to publication, and J. Greif for the use of several computer programs used to analyze the data. The assistance of Sai Wai Fu in taking the vapor pressure data is gratefully acknowledged.
Record Number:CaltechAUTHORS:TABrsi79
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:TABrsi79
Alternative URL:http://dx.doi.org/10.1063/1.1135792
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:10369
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:01 May 2008
Last Modified:26 Dec 2012 09:59

Repository Staff Only: item control page