| Autor: |
Matsuura, Kohki, Tsuda, Nobuo, Yamamoto, Gaishi |
| Jazyk: |
japonština |
| Rok vydání: |
1974 |
| Zdroj: |
金沢大学工学部紀要 = Memoirs of the Faculty of Technology Kanazawa University. 8(1):125-134 |
| ISSN: |
0022-832X |
| Popis: |
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. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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