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Figure 2
Pulse-height histogram of photons per synchrotron bunch. Dashed line – histogram of the digitized APD pulses showing the relative likelihood of 1, 2 and 3 photons per bunch arriving at the APD. The APD recorded air-scattered X-rays from an 8 keV synchrotron beam. Solid line – fit assuming a Poisson distribution with a mean value λ = 0.45 photons per bunch. Inset: digitized amplifier output for a 2 ms time window, recorded with a 50 MHz low pass filter to reduce baseline noise.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 32| Part 3| May 2025|
https://doi.org/10.1107/S1600577525002462
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