Comparison of model predictions with detailed species kinetic measurements of XeCl laser mixtures

Fumihiko Kannari, W. D. Kimura, J. J. Ewing

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

Detailed measurements of the time-dependent electron density, xenon excited-state densities, and total HCl depletion have been recently made in electron-beam- (e-beam-) pumped XeCl. This paper presents the results of extensive computer modeling of these experiments and detailed comparisons with the measured results. The model used includes updated HCl reaction cross sections and an enlarged xenon excited-state manifold. A reduced Boltzmann equation is used to calculate the high-energy electron-energy distribution function, and the low-energy distribution function assumes a quasi-Maxwellian distribution. These changes are upgrades to prior models. The model accurately predicts the total HCl depletion, the time-dependent electron density for initial HCl concentrations ≥0.16% (4.8 Torr), and the time-dependent xenon excited-state densities for lean (≅0.04%) initial HCl concentration cases. The model tends to underpredict the rate of electron-density growth after the electron density begins to run away. Since depletion of HCl is a key factor in understanding the kinetics data, possible mechanisms that can contribute to this process are also discussed.

Original languageEnglish
Pages (from-to)2615-2631
Number of pages17
JournalJournal of Applied Physics
Volume68
Issue number6
DOIs
Publication statusPublished - 1990
Externally publishedYes

Fingerprint

xenon
depletion
kinetics
predictions
lasers
energy distribution
distribution functions
excitation
Maxwell-Boltzmann density function
high energy electrons
electron beams
electron energy
cross sections

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Comparison of model predictions with detailed species kinetic measurements of XeCl laser mixtures. / Kannari, Fumihiko; Kimura, W. D.; Ewing, J. J.

In: Journal of Applied Physics, Vol. 68, No. 6, 1990, p. 2615-2631.

Research output: Contribution to journalArticle

@article{4fb2be2710344baa8d6a108ac7c4db57,
title = "Comparison of model predictions with detailed species kinetic measurements of XeCl laser mixtures",
abstract = "Detailed measurements of the time-dependent electron density, xenon excited-state densities, and total HCl depletion have been recently made in electron-beam- (e-beam-) pumped XeCl. This paper presents the results of extensive computer modeling of these experiments and detailed comparisons with the measured results. The model used includes updated HCl reaction cross sections and an enlarged xenon excited-state manifold. A reduced Boltzmann equation is used to calculate the high-energy electron-energy distribution function, and the low-energy distribution function assumes a quasi-Maxwellian distribution. These changes are upgrades to prior models. The model accurately predicts the total HCl depletion, the time-dependent electron density for initial HCl concentrations ≥0.16{\%} (4.8 Torr), and the time-dependent xenon excited-state densities for lean (≅0.04{\%}) initial HCl concentration cases. The model tends to underpredict the rate of electron-density growth after the electron density begins to run away. Since depletion of HCl is a key factor in understanding the kinetics data, possible mechanisms that can contribute to this process are also discussed.",
author = "Fumihiko Kannari and Kimura, {W. D.} and Ewing, {J. J.}",
year = "1990",
doi = "10.1063/1.346486",
language = "English",
volume = "68",
pages = "2615--2631",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "American Institute of Physics Publising LLC",
number = "6",

}

TY - JOUR

T1 - Comparison of model predictions with detailed species kinetic measurements of XeCl laser mixtures

AU - Kannari, Fumihiko

AU - Kimura, W. D.

AU - Ewing, J. J.

PY - 1990

Y1 - 1990

N2 - Detailed measurements of the time-dependent electron density, xenon excited-state densities, and total HCl depletion have been recently made in electron-beam- (e-beam-) pumped XeCl. This paper presents the results of extensive computer modeling of these experiments and detailed comparisons with the measured results. The model used includes updated HCl reaction cross sections and an enlarged xenon excited-state manifold. A reduced Boltzmann equation is used to calculate the high-energy electron-energy distribution function, and the low-energy distribution function assumes a quasi-Maxwellian distribution. These changes are upgrades to prior models. The model accurately predicts the total HCl depletion, the time-dependent electron density for initial HCl concentrations ≥0.16% (4.8 Torr), and the time-dependent xenon excited-state densities for lean (≅0.04%) initial HCl concentration cases. The model tends to underpredict the rate of electron-density growth after the electron density begins to run away. Since depletion of HCl is a key factor in understanding the kinetics data, possible mechanisms that can contribute to this process are also discussed.

AB - Detailed measurements of the time-dependent electron density, xenon excited-state densities, and total HCl depletion have been recently made in electron-beam- (e-beam-) pumped XeCl. This paper presents the results of extensive computer modeling of these experiments and detailed comparisons with the measured results. The model used includes updated HCl reaction cross sections and an enlarged xenon excited-state manifold. A reduced Boltzmann equation is used to calculate the high-energy electron-energy distribution function, and the low-energy distribution function assumes a quasi-Maxwellian distribution. These changes are upgrades to prior models. The model accurately predicts the total HCl depletion, the time-dependent electron density for initial HCl concentrations ≥0.16% (4.8 Torr), and the time-dependent xenon excited-state densities for lean (≅0.04%) initial HCl concentration cases. The model tends to underpredict the rate of electron-density growth after the electron density begins to run away. Since depletion of HCl is a key factor in understanding the kinetics data, possible mechanisms that can contribute to this process are also discussed.

UR - http://www.scopus.com/inward/record.url?scp=0000532001&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0000532001&partnerID=8YFLogxK

U2 - 10.1063/1.346486

DO - 10.1063/1.346486

M3 - Article

AN - SCOPUS:0000532001

VL - 68

SP - 2615

EP - 2631

JO - Journal of Applied Physics

JF - Journal of Applied Physics

SN - 0021-8979

IS - 6

ER -