抄録
Photostimulated exoelectron from cut aluminum has been measured with a picoammeter under various atmospheres at low pressure. The decaying characteristics of exoemission were different between atmospheres. The emission intensity under reductive atmospheres such as hydrogen, carbon monoxide, ammonia and n-hexane, decayed more slowly than under vacuum. The decaying curves of exoemission under oxidative atmospheres such as oxygen, dinitrogen oxide and ethyl iodode, consisted in two steps. The emission intensity decayed rapidly followed by recovering, and then decayed moderately. The role of the adsorbed layer on exoemission characteristics was discussed.
