MOBILITY OF SOME IONS PRODUCED BY TRITIUM BETAS

Mobilities of some organic and inorganic ions produced on interaction with beta-radiations from tritium in air (saturated with water vapor) have been measured. The negative ions generated were allowed to move i n the electrical field and collected at the oppositely charged electro de. The mobility of negatively charged ions of air is found to be 2.18 (cm . s(-1)/V . cm(-1)), which is in fair agreement with the reported value of 2.2. The calculated mobilities of other ions based on the me asured drift time exhibit a variation of up to 6.8 cm s(-1) . V cm(-1) . The occurrence of electrophilic sites or repeated presence of more e lectronegative atoms and or groups in the molecular structure gave hig her mobilities. The consideration of parachors, electron affinities an d dipole moments of the respective compounds do not reveal any trend.