| タイトル | Gated photomultiplier response characterization for DIAL measurements |
| 著者（英） | Schwemmer, Geary K.; Dombrowski, Mark; Korb, C. Laurence; Lee, H. Sang; Prasad, Coorg |
| 著者所属（英） | NASA Goddard Space Flight Center|SM Systems and Research Corp. |
| 発行日 | 1990-08-01 |
| 言語 | eng |
| 内容記述 | The characteristics of various detector responses are studied to understand the cause of various systematic biases and to minimize these undesirable effects in measurements of transient signals with large dynamic range. Signal-induced bias, gain variation, and the linearity of commonly used gated photomultipliers in the current integrating mode are quantitatively evaluated. Analysis of the results indicates that impurity ions inside the photomultiplier tubes (PMT) are the source of the signal induced bias and gain variation. Two different PMTs used in this study show significant differences in the magnitude and decay behavior of signal-induced bias. It was found that it can be minimized by using an external amplifier to reduce PMT gain, and by applying a low potential between the cathode and first dynode. The linearity of a PMT is also studied over a large dynamic range of input intensities employing a new technique which does not require an absolute calibration. The result of this study shows that the photomultiplier response is linear only for a limited input intensity range below a certain anode current. |
| NASA分類 | ELECTRONICS AND ELECTRICAL ENGINEERING |
| レポートNO | 90A44502 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/354723 |
