
TY  - JOUR
A1  - Elford, MT 
T1  - The Ratio DT/µ for Electrons in Water Vapour at 294 K
JF  - Australian Journal of Physics
JO  - Aust. J.  Phys.
Y1  - 1995
VL  - 48
IS  - 3
SP  - 427
EP  - 438
KW  - 
UR  - https://doi.org/10.1071/PH950427 
N2  - The ratio DT /µ for electrons in water vapour (294 K) has been measured by the TownsendHuxley method as a function of E/N (where E is the electric field strength and N the gas number density) at vapour pressures ranging from 0 ·103 to 0·413 kPa. For E/N  30 Td were found to be strongly pressure dependent, the strength and sign of the dependence depending on E/N and the current ratio relation used. Since extrapolation to infinite pressure at each E/N value did not give the same value of DT/ u, it has not been possible to derive reliable DT/ J.l values for this higher E/N range. Possible causes of the observed pressure dependences are discussed. The present data are in good agreement with the values predicted by Ness and Robson for values of E/N ~ 24 Td. 
ER  -

