Monte Carlo Simulation Study of the Characteristics of Xe-Ne Gas Mixtures as Detection Media in Gas Proportional Ionization Counters

Santos, F.P.; Rachinhas, P.J.B.M.; Dias, T.H.V.T.; Borges, F.I.G.M.; Stauffer, A D; Conde, C.A.N.

doi:10.1109/tns.2006.889641

Cited by 3 publications

References 10 publications

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Wall charge evolution models and emission of exoelectrons from MgO thin film of ac-PDPs

Kim

Yoon

Yang

2010

Journal of Applied Physics

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Two different wall charge evolution models, i.e., reversion and accumulation models, were proposed incorporating the phenomenon of secondary electron emission during the glow discharges of alternating current-PDPs. Based on the wall charge evolution models, theoretical analyses on exoelectron emission kinetics were conducted, and the effects of initial electron concentration trapped and temperature on the exoelectron currents were predicted. The theoretical prediction was compared with the currents measured experimentally. The theoretical analyses and experimental observations suggest that wall charge evolution model and the first- and second-order reaction kinetics may represent the wall charge formation and exoelectron emission from MgO layer of ac-PDPs.

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Wall charge evolution models and emission of exoelectrons from MgO thin film of ac-PDPs

Kim

Yoon

Yang

2010

Journal of Applied Physics

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Experimental study of Xe-Ne proportional counters for X-ray detection

Borges

Santos

Amaro

et al.

IEEE Symposium Conference Record Nuclear Science 2004.

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The use of appropriate mixtures of noble gases in proportional counters can take advantage of the Penning effect, a process of energy transfer between the two species which produces extra electrons. The Penning effect can occur in Xe-Ne mixtures and recent Monte Carlo simulation and experimental measurements have shown that a small percentage of Xe (below about 1%) brings to a minimum the fluctuations in the formation of the primary electron cloud and decreases the w-value to a magnitude near the case of pure Xe. In addition, the excitation and ionization thresholds and the fluctuations in charge multiplication become lower and the ionization efficiency becomes higher than in the pure Xe case, indicating that improved gas gain and energy resolution can be achieved at low applied voltages for a Xe-Ne filled proportional counter. In this work, we present an experimental study of the performance of a cylindrical proportional counter filled with several Xe-Ne mixtures at atmospheric pressure, for 5.9 keV x-rays. Results are presented in particular for the energy resolution and gas multiplication factor and a discussion of the experimental results is made.

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Measurement of exo‐electron emission from MgO thin film of ACPDPs

Yoon¹,

Hong²,

Ko³

et al. 2009

J Soc Info Display

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Abstract— Exo‐electron emission from MgO thin film was measured by attaching a high‐precision current sensor to the address electrode of the rear plate of an ACPDP test panel. The measured results revealed that the exo‐electron emission currents can vary very sensitively with the type of doping elements used in MgO film and the measuring temperature. The activation energy of the exo‐electron emission estimated from the emission curves indicated that the trap levels are between 0.05 and 0.32 eV below the bottom of its conduction band. This suggests that shallow electron‐trap levels within MgO film are mainly responsible for the exo‐electron emission.

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Monte Carlo Simulation Study of the Characteristics of Xe-Ne Gas Mixtures as Detection Media in Gas Proportional Ionization Counters

Cited by 3 publications

References 10 publications

Wall charge evolution models and emission of exoelectrons from MgO thin film of ac-PDPs

Wall charge evolution models and emission of exoelectrons from MgO thin film of ac-PDPs

Experimental study of Xe-Ne proportional counters for X-ray detection

Measurement of exo‐electron emission from MgO thin film of ACPDPs

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