| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Outline of Final Research Achievements |
We measured work function of Cs and K by using the method that we proposed where we use a hollow-cathode lamp as a phototube. It was confirmed that this method can be used universally and that the work function can be obtained with a relatively simple experimental arrangement in the laboratory, which are the merits of this method. It was also found that the values of the work functions obtained by our experimental method agree with the value obtained by another conventional method within a margin of error. It became clear that the work function values obtained in this study are reproducible and sufficiently reliable from our analysis. At the same time, it was clarified that the work function value of the element to be measured changes due to the influence of other elements contained in the lamp cathode. The useful knowledge was obtained for utilizing our method as a teaching material for physics experiments.
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