Simulation of He+ induced afterpulses in PMTs

Konrad Tudyka; Grzegorz Adamiec; Andrzej Bluszcz

doi:10.1063/1.4954511

Simulation of He⁺ induced afterpulses in PMTs

Zakład Geochronologii i Badań Izotopowych Środowiska (RIF/RIF2)

Wyniki badań: Wkład do czasopisma › Artykuł › recenzja

3 Cytowania z bazy Scopus

Abstrakt

We report on a Monte Carlo simulation study of afterpulses due to trace gases in EMI 9235QA photomultipliers that are widely used in many luminescence detection systems operating in single photon counting mode. The numerical simulation takes into account the nonuniform electric field distribution and processes including elastic scattering: e + He → e + He, excitation: e + He → e + He^-, ionization: e + He → 2e + He⁺, elastic scattering: He⁺ + He → He⁺ + He, charge transfer: He⁺ + He → He_f + He⁺ (He_f indicates a fast neutral) and elastic scattering: He_f + He → He_f + He_(f). The simulated and the measured time of flight distributions agree well. In addition, the above simulated processes demonstrate mechanisms of the observed series of pulses brought about by a single helium atom ionization.

Język oryginału	angielski
Numer artykułu	063120
Czasopismo	Review of Scientific Instruments
Tom	87
Numer wydania	6
Identyfikatory DOI	https://doi.org/10.1063/1.4954511
Status publikacji	Opublikowano - 1 cze 2016

Obszary tematyczne ASJC Scopus

Instrumentacja

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10.1063/1.4954511

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Cytowanie

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abstract = "We report on a Monte Carlo simulation study of afterpulses due to trace gases in EMI 9235QA photomultipliers that are widely used in many luminescence detection systems operating in single photon counting mode. The numerical simulation takes into account the nonuniform electric field distribution and processes including elastic scattering: e + He → e + He, excitation: e + He → e + He-, ionization: e + He → 2e + He+, elastic scattering: He+ + He → He+ + He, charge transfer: He+ + He → Hef + He+ (Hef indicates a fast neutral) and elastic scattering: Hef + He → Hef + He(f). The simulated and the measured time of flight distributions agree well. In addition, the above simulated processes demonstrate mechanisms of the observed series of pulses brought about by a single helium atom ionization.",

author = "Konrad Tudyka and Grzegorz Adamiec and Andrzej Bluszcz",

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AU - Tudyka, Konrad

AU - Adamiec, Grzegorz

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Y1 - 2016/6/1

N2 - We report on a Monte Carlo simulation study of afterpulses due to trace gases in EMI 9235QA photomultipliers that are widely used in many luminescence detection systems operating in single photon counting mode. The numerical simulation takes into account the nonuniform electric field distribution and processes including elastic scattering: e + He → e + He, excitation: e + He → e + He-, ionization: e + He → 2e + He+, elastic scattering: He+ + He → He+ + He, charge transfer: He+ + He → Hef + He+ (Hef indicates a fast neutral) and elastic scattering: Hef + He → Hef + He(f). The simulated and the measured time of flight distributions agree well. In addition, the above simulated processes demonstrate mechanisms of the observed series of pulses brought about by a single helium atom ionization.

AB - We report on a Monte Carlo simulation study of afterpulses due to trace gases in EMI 9235QA photomultipliers that are widely used in many luminescence detection systems operating in single photon counting mode. The numerical simulation takes into account the nonuniform electric field distribution and processes including elastic scattering: e + He → e + He, excitation: e + He → e + He-, ionization: e + He → 2e + He+, elastic scattering: He+ + He → He+ + He, charge transfer: He+ + He → Hef + He+ (Hef indicates a fast neutral) and elastic scattering: Hef + He → Hef + He(f). The simulated and the measured time of flight distributions agree well. In addition, the above simulated processes demonstrate mechanisms of the observed series of pulses brought about by a single helium atom ionization.

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