Transient negative mobility of hot electrons in gaseous xenon

Jm, Warman; Sowada, Ulrich; Haas, de Jcm

doi:10.1103/physreva.31.1974

Cited by 73 publications

(33 citation statements)

References 12 publications

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“…It is noted that <z)/Ao has a negative value during an initial short time (tl ~ $. 3) which, in fact, corresponds to the negative mobility recently realised both theoretically (McMahon and Shizgal 1985) and experimentally (Warman et al 1985). The fact that the steady-state MCS values of <e), fo(e) and W agree with the two-term values is consistent with the results of Milloy and Watts.…”

supporting

confidence: 81%

Monte Carlo Simulation of an Electron Swarm in an Argon-like Gas

Koura¹

1987

Aust. J. Phys.

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Aust. J. Phys., 1987,40,61-4 A Monte Carlo simulation (MCS) of an electron swarm in an argon-like gas (of atomic mass a.m.u.), with Golden's cross section with a very deep minimum, is presented in order to examine the breakdown of the validity of the conventional two-term expression for the transverse diffusion coefficient Dr indicated by Milloy and Watts. It is found that the MCS value of Dr approaches the two-term value much slower than other swarm parameters such as the drift velocity Wand the longitudinal diffusion coefficient ~. The discrepancy between the MCS and two-term values of Dr revealed by Milloy and Watts is attributable to the evaluation of Dr at the long transient (correlation) stage in the MCS. It is concluded that the two-term expressions for Dr and ~ (and other swarm parameters) are sufficiently accurate even for Golden's cross section with a very deep minimum.Because the conventional two-term solution of the Boltzmann equation is very useful for the analysis of electron swarms in gases, the validity of the two-term solution has been thoroughly examined in its various aspects. By making comparisons with electron swarm parameters obtained by the Monte Carlo simulation (MCS), Milloy and Watts (1977) indicated the breakdown of the validity of the two-term expression for the transverse diffusion coefficient Dr in an argon-like gas (of atomic mass 1 a.m.u.) with Golden's (1966) momentum-transfer cross section cr m·(E) with a very deep minimum. It seems curious, however, that the MCS and two-term values of the drift velocity W, the mean energy

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supporting

confidence: 81%

Monte Carlo Simulation of an Electron Swarm in an Argon-like Gas

Koura¹

1987

Aust. J. Phys.

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“…Experimentally the negative mobility has only been observed in a transient Xe plasma (Warman et al 1985).…”

Section: Resolutionmentioning

confidence: 97%

Boltzmann Equation in Velocity Space

Loureiro

Amorim

2016

Kinetics and Spectroscopy of Low Temperature Plasmas

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This chapter is devoted to the analysis of the electron Boltzmann transport equation in the velocity space for the case of an applied external direct-current (DC) electric field. The analysis is restricted to low and intermediate field values in order the two-term expansion approximation of the electron velocity distribution around the direction of electron drift is sufficiently accurate. The terms for the electron energy gain from the field and electron energy losses by elastic and inelastic collisions, as well as the corresponding energy-averaged power balance terms, are derived in detail. At the end of the chapter some solutions to the Boltzmann equation are shown and discussed for H 2 and N 2 .

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“…Подобный результат получен и в теоретической работе [39] для релакса-ции образного энергетического распределения электронов. В [40] впервые экспериментально заре-гистрирована АОП в релаксирующей плазме Хе. В трех перечисленных работах рассматриваются усло-вия, когда АОП существует небольшой интервал времени в процессе релаксации энергетического рас-пределения электронов.…”

Section: 1unclassified

Phenomena in gases and plasmas with negative ions

Aleksandrov¹,

Napartovich²

1993

Usp. Fiz. Nauk

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Transient negative mobility of hot electrons in gaseous xenon

Cited by 73 publications

References 12 publications

Monte Carlo Simulation of an Electron Swarm in an Argon-like Gas

Monte Carlo Simulation of an Electron Swarm in an Argon-like Gas

Boltzmann Equation in Velocity Space

Phenomena in gases and plasmas with negative ions

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