| 摘要 |
PCT No. PCT/FI89/00159 Sec. 371 Date Mar. 11, 1991 Sec. 102(e) Date Mar. 11, 1991 PCT Filed Aug. 29, 1989 PCT Pub. No. WO90/02415 PCT Pub. Date Mar. 8, 1990.A gain stabilization system for photomultiplier tubes using a pulsed light source, preferably a light emitting diode (LED), the signal of which is detected at the first dynode and at the anode. The gain of the photomultiplier tube is stabilized by keeping the ratio between the two signals constant. |
