Abstract

Dark pulse distributions from three types of photomultiplier have been fitted to Poisson distributions, both for pulses originated by single electrons and for larger pulses. These distributions can be used to determine the first-dynode secondary-emission coefficients, the fraction of electrons that create positive ions, the number of secondary electrons created by each positive ion, and the rate of output pulses above a fixed discriminator level.

© 1985 Optical Society of America

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References

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  1. P. B. Coates, “Noise Sources in the C31000D Photomultiplier,” J. Phys. E 4, 201 (1971).
    [CrossRef]
  2. R. W. Engstrom, RCA Photomultiplier Handbook (RCA, 1980), Appendix G.
  3. B. R. Frieden, Probability, Statistical Optics, and Data Testing (Springer, New York, 1983).
    [CrossRef]
  4. C. C. Lo, B. Leskovar, “Afterpulse Time Spectrum Measurement of RCA 8850 Photomultiplier,” IEEE Trans. Nucl. Sci. NS-30, 445 (1983).
    [CrossRef]

1983

C. C. Lo, B. Leskovar, “Afterpulse Time Spectrum Measurement of RCA 8850 Photomultiplier,” IEEE Trans. Nucl. Sci. NS-30, 445 (1983).
[CrossRef]

1971

P. B. Coates, “Noise Sources in the C31000D Photomultiplier,” J. Phys. E 4, 201 (1971).
[CrossRef]

Coates, P. B.

P. B. Coates, “Noise Sources in the C31000D Photomultiplier,” J. Phys. E 4, 201 (1971).
[CrossRef]

Engstrom, R. W.

R. W. Engstrom, RCA Photomultiplier Handbook (RCA, 1980), Appendix G.

Frieden, B. R.

B. R. Frieden, Probability, Statistical Optics, and Data Testing (Springer, New York, 1983).
[CrossRef]

Leskovar, B.

C. C. Lo, B. Leskovar, “Afterpulse Time Spectrum Measurement of RCA 8850 Photomultiplier,” IEEE Trans. Nucl. Sci. NS-30, 445 (1983).
[CrossRef]

Lo, C. C.

C. C. Lo, B. Leskovar, “Afterpulse Time Spectrum Measurement of RCA 8850 Photomultiplier,” IEEE Trans. Nucl. Sci. NS-30, 445 (1983).
[CrossRef]

IEEE Trans. Nucl. Sci.

C. C. Lo, B. Leskovar, “Afterpulse Time Spectrum Measurement of RCA 8850 Photomultiplier,” IEEE Trans. Nucl. Sci. NS-30, 445 (1983).
[CrossRef]

J. Phys. E

P. B. Coates, “Noise Sources in the C31000D Photomultiplier,” J. Phys. E 4, 201 (1971).
[CrossRef]

Other

R. W. Engstrom, RCA Photomultiplier Handbook (RCA, 1980), Appendix G.

B. R. Frieden, Probability, Statistical Optics, and Data Testing (Springer, New York, 1983).
[CrossRef]

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Figures (2)

Fig. 1
Fig. 1

Lower curves are the dark noise pulse height distributions for the three indicated photomultipliers. The upper curves are the sum of the counts in all channels from channel N to channel 512 (the total number of pulses larger than a given pulse height).

Fig. 2
Fig. 2

Dotted curves are the same dark noise pulse height distributions as in Fig. 1. The vertical lines are a Poisson distribution fitted to the single-electron peak and a second Poisson distribution fitted to the large-pulse distribution. The mean values of the Poisson distributions are given in Table II.

Tables (2)

Tables Icon

Table I Photomultiplier Configurations

Tables Icon

Table II Photomultiplier Dark Pulse Data Derived from Pulse Height Distributions

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