The 80th JSAP Autumn Meeting 2019

Presentation information

Poster presentation

1 Interdisciplinary Physics and Related Areas of Science and Technology » 1.2 Education

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

Sat. Sep 21, 2019 9:30 AM - 11:30 AM PA1 (PA)

9:30 AM - 11:30 AM

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

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.