[21a-PA1-1~20] 1.2 Education

[21a-PA1-10] Work Function Measurements of Potassium Atoms in a Hollow-Cathode Lamp

〇Ryuzo Ohmukai¹, Naoto Takeyama¹, Aoi Arai¹, Hitoshi Kondo¹ (1.Saitama Univ.)

Keywords:work function, hollow-cathode lamp, Potassium

We have developed a novel method for measuring the work function using a hollow-cathode lamp. We report the threshold wavelength of Potassium atoms. It is measured to be 614±69 nm, which is larger than that of measured previously (542 nm). In our presentation we will describe the reasons for the difference and the reproducibility of the measured work functions.