In 1900,J.S. Townsend first proposed the use of the first ionization coefficient α todescribe the gas discharge,and proposed a method to measure the parameter α,namely the steady-state Townsend method (SST). Later,it was discovered that thedischarge chara    （共 12968 字）     [閱讀本文] >>

        In 1900,J.S. Townsend first proposed the use of the first ionization coefficient α todescribe the gas discharge,and proposed a method to measure the parameter α,namely the steady-state Townsend method (SST). Later,it was discovered that thedischarge chara    （共 12968 字）     [閱讀本文] >>