Townsend second ionization coefficient

Townsend second ionization coefficient

[¦tau̇n·zənd ‚sek·ənd ‚ī·ə·nə′zā·shən ‚kō·ə‚fish·ənt] (nucleonics) The number of electrons released from the cathode of an ionization chamber per initial ionizing collision in the gas. Also known as secondary ionization coefficient.