| Zugriffsnummer | 45752 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | unbekannt |
| Sprache | Deutsch |
| Titel | Linearitätsabweichungen bei Strahlungsmessungen mit Photovervielfachern |
| Autor(in); Institution |
Sauerbrey, Günter; 7.2, Hochtemperatur- und Vakuumphysik, PTB-Berlin
|
| Quelle/Jahr | Applied Optics: 11 (1972), 11, 2576 - 2583 |
| ISSN | 1559-128X (PRINT) ; 1539-4522 (ONLINE) |
| DOI | |
| Verlag | Washington, DC: Optical Society of America |
| Zusammenfassung | Sources of nonlinear response of photomultiplier tubes are discussed, and examples are given for conditions where nonlinearities )10−3 are possible. Slow fatigue nonlinearities were eliminated by a beat technique; the results therefore should be applicable to measurements of pulsed radiation at low or constant mean level. Nonlinearities caused by current takeover from a resistive voltage divider were compared with calculations. Reasons of inner nonlinearities were space charges: (a) between cathode and first dynode (at cathode currents )10−9 A, depending on cathode spot and wavelength) and (b) between the last dynodes. Up to ≈1-mA anode current proportionality was observed between currents and nonlinearities. Avoiding fatigue by pulsed operation, the range of linear response may be much expanded compared with dc operation. |
