Development of microwave discharge spots in neon and helium gas by submicrosecond pulses

摘要

Microwave discharges were developed in pure neon, pure helium, and 90percnt;hyphen;10percnt; neonhyphen;helium gas around the trajectory of highhyphen;energy charged particles by applying submicrosecond pulses shortly after the passage of the particle. The pulse width and amplitude of the discharge field were varied so that the effect on the discharge spot development could be observed. All measurements were made at room temperature and atmospheric pressure. The discharge chamber is a partially dielectrichyphen;loaded waveguide operating in the TEM mode at 1300 MHz so that the discharge fields are uniform over the gas volume.