@article{oai:kanazawa-u.repo.nii.ac.jp:00011778,
 author = {Matsuura, Kohki and Tsuda, Nobuo and Yamamoto, Gaishi and 松浦, 弘毅 and 津田, 伸正 and 山本, 外史},
 issue = {1},
 journal = {金沢大学工学部紀要 = Memoirs of the Faculty of Technology Kanazawa University},
 month = {Mar},
 note = {Theoretical and experimental evaluation of extremely low level photodetection techniques is described. The techniques evaluated are DC method and Single Photoelec­tron Counting method both using photomultiplier tubes. The photomultiplier tubes used are HTV-R132(S10) and HTV-R376(S20). Optimum values of applied voltage and threshold level of the multiplier tubes obtained by experiments are shown. The best signal sensitivity of 4.5 photo-electrons per second for a counting time of 10 seconds is acquired for HTV-R376 which is cooled down to -30 °C. This means the light power of 2.8x 10⁻¹⁷ w (6328 Å) can be detected by the observation of 10 seconds.},
 pages = {125--134},
 title = {極微弱光の検出},
 volume = {8},
 year = {1974}
}