Ionization fluctuations and resolution of ionization chambers and semiconductor detectors

Alkhazov, G.; Komar, A.P.; Vorob'ev, A. A.

doi:10.1016/0029-554x(67)90455-7

Cited by 160 publications

(26 citation statements)

References 31 publications

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“…The affinity between the two problems was fully recognized already in 1965 by van Roosbroek [17] (see also [24]). The PEB process can be considered in terms of a CPP if one identifies the initial particle kinetic energy with an available parking length and the pair creation energy with the car size.…”

Section: Fano Factorsmentioning

confidence: 99%

Fluctuations of the partial filling factors in competitive random sequential adsorption from binary mixtures

Subashiev

Luryi

2007

Phys. Rev. E

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Competitive random sequential adsorption on a line from a binary mix of incident particles is studied using both an analytic recursive approach and Monte Carlo simulations. We find a strong correlation between the small and the large particle distributions so that while both partial contributions to the fill factor fluctuate widely, the variance of the total fill factor remains relatively small. The variances of partial contributions themselves are quite different between the smaller and the larger particles, with the larger particle distribution being more correlated. The disparity in fluctuations of partial fill factors increases with the particle size ratio. The additional variance in the partial contribution of smaller particle originates from the fluctuations in the size of gaps between larger particles. We discuss the implications of our results to semiconductor high-energy gamma detectors where the detector energy resolution is controlled by correlations in the cascade energy branching process.

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Section: Fano Factorsmentioning

confidence: 99%

Fluctuations of the partial filling factors in competitive random sequential adsorption from binary mixtures

Subashiev

Luryi

2007

Phys. Rev. E

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“…Theoretical treatments have been given for the derivation of F by W. Van Roosbroeck (17) and G. D. Alkhasov et al(18) but the models have proved inadequate, leading to values of F which are too high.Drummond and Moll (14), as an extension of their theoretical treatment of H predicted values of F = 0.059 for Si and 0.066 for Ge.…”

mentioning

confidence: 99%

Review of Ge detectors for gamma spectroscopy

Alexiev

Reinhard

et al. 2002

Australas. Phys. Eng. Sci. Med.

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“…For the semitransparent operation mode the amplitude of the 22-keV x-ray interactions in the xenon chamber can be given by A xe = C* N Xe *L* G d (8) and L is then obtained from (6) and (8) 10 10 P Xe P Xe W W A A L= (9) For the same experimental conditions we obtained L = 3.8. The low L-value obtained for the semitransparent case is due to limitations of the CsI-film electrical contact-layer.…”

Section: A Determination Of L-valuementioning

confidence: 96%

“…Considering W = W Xe = 22eV [9], F = 0.17 [10], f = 0.45 for the MSGC [11] and f g for V a = 420 V (Fig.3), the detector energy resolution (4) can be calculated as a function of L. As an example, Fig.4 presents the detector energy resolution as a function of L for 5.9-keV and 2.3-keV x-rays and for both photosensor operation modes. We can observe that for small L values the major factor that limits the achievable R E , for the reflective mode, is the f g factor.…”

Section: Simulationmentioning

confidence: 99%

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Reflective and semi-transparent CsI-photocathodes in microstrip plate gas chamber photosensors for gas proportional scintillation counters: a comparative study

Veloso

Freitas

Santos

et al.

2001 IEEE Nuclear Science Symposium Conference Record (Cat. No.01CH37310)

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We report the results of a comparative study of a xenon gas proportional scintillation counter instrumented with photosensors based on a microstrip plate. The photosensor is isolated from the gas proportional scintillation counter by a quartz window and is operated in P-10 gas at atmospheric pressure. The CsI-photocathode is operated either in the reflective or semi-transparent mode. In the reflective mode, the CsI-photocathode is deposited directly on the microstrip plate. Gain fluctuations due to a geometric factor, which degrade the energy resolution, are observed. In the semi-transparent mode the CsI-photocathode is deposited onto the surface of the quartz window resulting in two potential improvements: an increase in the number of photoelectrons produced in the photocathode and a reduction of geometry-related effects. Both modes of operation will be evaluated and their performance characteristics determined.

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Ionization fluctuations and resolution of ionization chambers and semiconductor detectors

Cited by 160 publications

References 31 publications

Fluctuations of the partial filling factors in competitive random sequential adsorption from binary mixtures

Fluctuations of the partial filling factors in competitive random sequential adsorption from binary mixtures

Review of Ge detectors for gamma spectroscopy

Reflective and semi-transparent CsI-photocathodes in microstrip plate gas chamber photosensors for gas proportional scintillation counters: a comparative study

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