Title :
Photoelectric current in cryogenic liquid mixtures
Author :
Nakamura, S. ; Sakai, Y. ; Xu, Li ; Tagashira, H.
Author_Institution :
Dept. of Electron. Technol., Hokkaido Polytech. Coll., Otaru, Japan
fDate :
8/1/1991 12:00:00 AM
Abstract :
The ratio of photoelectric current JL in mixtures of liquid nitrogen (LN2), liquid argon (LAr), and liquid methane (LCH4) to that in vacuum JV was measured for a wide range of electric field strengths E. From the analysis of curves of JL /JV vs. E, the electron mobility μ in LN2/LAr and LN2/LCH4 was estimated as a function of mol fraction of N2 X*, where *=N2; μ decreased exponentially with X*. The liquid temperature at a saturation vapor pressure of 0.1 MPa, the normal boiling temperature, and the enthalpy change for vaporization were obtained
Keywords :
argon; carrier mobility; cryogenics; heat of vaporisation; liquid mixtures; nitrogen; organic compounds; organic insulating materials; photoconductivity; 0.1 MPa; Ar; LAr; LCH4; LN2; N2; cryogenic liquid mixtures; electric field strengths; electron mobility; enthalpy change; liquid methane; liquid temperature; normal boiling temperature; photoelectric current; saturation vapor pressure; vaporization; Argon; Cathodes; Cryogenics; Current measurement; Dielectrics and electrical insulation; Electric variables measurement; Electron mobility; Gases; Pressure gauges; Temperature;
Journal_Title :
Electrical Insulation, IEEE Transactions on
