Title :
Argon purification in liquid phase [electronic capture]
Author :
Bressi, G. ; Cambiaghi, M. ; Carugno, G. ; Conti, E. ; Dainese, B. ; Prete, G. ; Toniolo, N.
Author_Institution :
INFN, Sezione di Pavia, Italy
Abstract :
A novel purification method applied to electronegative impurities in liquid argon has been developed. The electronic capture mechanism has been exploited, the electrons being generated by a strong gamma-ray source. High purity level and stability, comparable to those obtained with standard gaseous phase procedures, have been obtained. The electron lifetime obtained (~0.8 ms. corresponding to an ~1.5 m electron attenuation length at 1 kV/cm) allows one to work with a large chamber with long-term stability
Keywords :
argon; electron capture; ionisation chambers; electron attenuation length; electron lifetime; electronegative impurities; electronic capture mechanism; ionisation chamber; liquid Ar; purification method; stability; strong gamma-ray source; Anodes; Argon; Electrons; Filters; Flanges; Gettering; Impurities; Ionization chambers; Purification; Steel;
Conference_Titel :
Conduction and Breakdown in Dielectric Liquids, 1990. ICDL 1990. Conference Record., 10th International Conference on
Conference_Location :
Grenoble
DOI :
10.1109/ICDL.1990.202876
