[15p-B5-1~19] 7.2 Applications and technologies of electron beams

[15p-B5-15] Electron Emission Property of Field Emitter Arrays under X-ray Irradiation

〇Yasuhito Gotoh¹, Hiroshi Tsuji¹, Masayoshi Nagao², Masafumi Akiyoshi³, Ikuji Takagi¹ (1.Kyoto Univ., 2.AIST, 3.Osaka Pref. Univ.)

Keywords:field emitter array, electron emission property, x-ray irradiation

The electron emission property of the field emitter arrays were investigated under the x-ray irradiation. A high energy x-ray was generated by the bombardment of MeV electrons. The current-voltage characteristics under the x-ray irradiation revealed that those irradiated by a lower dose rate showed little difference from those without irradiation. However, the current-voltage characteristics under the x-ray irradiation with a higher dose rate, the anode current decreased. The present results were considered to be due to the charging of the floating electrodes and insulators.