Plasma measurements using ponderomotive forces to perturb the translational motion of particles

Xingguo Pan; Lipeng Qian; Mikhail N. Shneider; Richard B. Miles; Peter F. Barker

doi:10.1109/PPPS.2001.01002126

Plasma measurements using ponderomotive forces to perturb the translational motion of particles

Xingguo Pan, Lipeng Qian, Mikhail N. Shneider, Richard B. Miles, Peter F. Barker

Mechanical & Aerospace Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The ponderomotive forces associated with the interference pattern of two crossing laser beams can effectively perturb the translational motion of atoms, molecules and electrons. The ponderomotive force sets up a density perturbation among the dipoles moving synchronously with the interference pattern. Possiblities of using ponderomotive-driven density perturbations for plasma diagnostics are discussed. For example, coherent Rayleigh scattering is a process in which a laser beam is Bragg-scattered off a traveling atom or molecule number density wave created by ponderomotive forces. The strength of the signal is directly related to the number of atoms or molecules whose velocities are closely synchronized with the traveling wave, the thermal velocity distribution. We show that coherent Rayleigh scattering is applicable to the measurement of neutral temperature in weakly ionized plasmas. Experimental results are given for glow discharges. We also discuss the possibility of acoustic detection of energy deposition by optical lattice generated with two crossing laser beams. Again, ponderomotive forces perturb the translational motion of gas particles and energy is transferred from laser beams into the gas. Numerical calculation shows that the power deposition is a function of the laser beams' frequency difference. And such a power deposition curve bears the information of the gas particles' Maxwell-Boltzmann distribution, therefore, gas temperature can be derived from such a measurement.

Original language	English (US)
Title of host publication	PPPS 2001 - Pulsed Power Plasma Science 2001
Editors	Robert Reinovsky, Mark Newton
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	434-437
Number of pages	4
ISBN (Electronic)	0780371208, 9780780371200
DOIs	https://doi.org/10.1109/PPPS.2001.01002126
State	Published - 2015
Event	28th IEEE International Conference on Plasma Science and 13th IEEE International Pulsed Power Conference, PPPS 2001 - Las Vegas, United States Duration: Jun 17 2001 → Jun 22 2001

Publication series

Name	PPPS 2001 - Pulsed Power Plasma Science 2001
Volume	1

Other

Other	28th IEEE International Conference on Plasma Science and 13th IEEE International Pulsed Power Conference, PPPS 2001
Country/Territory	United States
City	Las Vegas
Period	6/17/01 → 6/22/01

All Science Journal Classification (ASJC) codes

Energy Engineering and Power Technology
Nuclear Energy and Engineering
Nuclear and High Energy Physics

Access to Document

10.1109/PPPS.2001.01002126

Cite this

Pan, X., Qian, L., Shneider, M. N., Miles, R. B., & Barker, P. F. (2015). Plasma measurements using ponderomotive forces to perturb the translational motion of particles. In R. Reinovsky, & M. Newton (Eds.), PPPS 2001 - Pulsed Power Plasma Science 2001 (pp. 434-437). Article 1002126 (PPPS 2001 - Pulsed Power Plasma Science 2001; Vol. 1). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PPPS.2001.01002126

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title = "Plasma measurements using ponderomotive forces to perturb the translational motion of particles",

abstract = "The ponderomotive forces associated with the interference pattern of two crossing laser beams can effectively perturb the translational motion of atoms, molecules and electrons. The ponderomotive force sets up a density perturbation among the dipoles moving synchronously with the interference pattern. Possiblities of using ponderomotive-driven density perturbations for plasma diagnostics are discussed. For example, coherent Rayleigh scattering is a process in which a laser beam is Bragg-scattered off a traveling atom or molecule number density wave created by ponderomotive forces. The strength of the signal is directly related to the number of atoms or molecules whose velocities are closely synchronized with the traveling wave, the thermal velocity distribution. We show that coherent Rayleigh scattering is applicable to the measurement of neutral temperature in weakly ionized plasmas. Experimental results are given for glow discharges. We also discuss the possibility of acoustic detection of energy deposition by optical lattice generated with two crossing laser beams. Again, ponderomotive forces perturb the translational motion of gas particles and energy is transferred from laser beams into the gas. Numerical calculation shows that the power deposition is a function of the laser beams' frequency difference. And such a power deposition curve bears the information of the gas particles' Maxwell-Boltzmann distribution, therefore, gas temperature can be derived from such a measurement.",

author = "Xingguo Pan and Lipeng Qian and Shneider, \{Mikhail N.\} and Miles, \{Richard B.\} and Barker, \{Peter F.\}",

note = "Publisher Copyright: {\textcopyright} 2002 IEEE.; 28th IEEE International Conference on Plasma Science and 13th IEEE International Pulsed Power Conference, PPPS 2001 ; Conference date: 17-06-2001 Through 22-06-2001",

year = "2015",

doi = "10.1109/PPPS.2001.01002126",

language = "English (US)",

series = "PPPS 2001 - Pulsed Power Plasma Science 2001",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

pages = "434--437",

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address = "United States",

}

Pan, X, Qian, L, Shneider, MN, Miles, RB & Barker, PF 2015, Plasma measurements using ponderomotive forces to perturb the translational motion of particles. in R Reinovsky & M Newton (eds), PPPS 2001 - Pulsed Power Plasma Science 2001., 1002126, PPPS 2001 - Pulsed Power Plasma Science 2001, vol. 1, Institute of Electrical and Electronics Engineers Inc., pp. 434-437, 28th IEEE International Conference on Plasma Science and 13th IEEE International Pulsed Power Conference, PPPS 2001, Las Vegas, United States, 6/17/01. https://doi.org/10.1109/PPPS.2001.01002126

Plasma measurements using ponderomotive forces to perturb the translational motion of particles. / Pan, Xingguo; Qian, Lipeng; Shneider, Mikhail N. et al.
PPPS 2001 - Pulsed Power Plasma Science 2001. ed. / Robert Reinovsky; Mark Newton. Institute of Electrical and Electronics Engineers Inc., 2015. p. 434-437 1002126 (PPPS 2001 - Pulsed Power Plasma Science 2001; Vol. 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Plasma measurements using ponderomotive forces to perturb the translational motion of particles

AU - Pan, Xingguo

AU - Qian, Lipeng

AU - Shneider, Mikhail N.

AU - Miles, Richard B.

AU - Barker, Peter F.

PY - 2015

Y1 - 2015

N2 - The ponderomotive forces associated with the interference pattern of two crossing laser beams can effectively perturb the translational motion of atoms, molecules and electrons. The ponderomotive force sets up a density perturbation among the dipoles moving synchronously with the interference pattern. Possiblities of using ponderomotive-driven density perturbations for plasma diagnostics are discussed. For example, coherent Rayleigh scattering is a process in which a laser beam is Bragg-scattered off a traveling atom or molecule number density wave created by ponderomotive forces. The strength of the signal is directly related to the number of atoms or molecules whose velocities are closely synchronized with the traveling wave, the thermal velocity distribution. We show that coherent Rayleigh scattering is applicable to the measurement of neutral temperature in weakly ionized plasmas. Experimental results are given for glow discharges. We also discuss the possibility of acoustic detection of energy deposition by optical lattice generated with two crossing laser beams. Again, ponderomotive forces perturb the translational motion of gas particles and energy is transferred from laser beams into the gas. Numerical calculation shows that the power deposition is a function of the laser beams' frequency difference. And such a power deposition curve bears the information of the gas particles' Maxwell-Boltzmann distribution, therefore, gas temperature can be derived from such a measurement.

AB - The ponderomotive forces associated with the interference pattern of two crossing laser beams can effectively perturb the translational motion of atoms, molecules and electrons. The ponderomotive force sets up a density perturbation among the dipoles moving synchronously with the interference pattern. Possiblities of using ponderomotive-driven density perturbations for plasma diagnostics are discussed. For example, coherent Rayleigh scattering is a process in which a laser beam is Bragg-scattered off a traveling atom or molecule number density wave created by ponderomotive forces. The strength of the signal is directly related to the number of atoms or molecules whose velocities are closely synchronized with the traveling wave, the thermal velocity distribution. We show that coherent Rayleigh scattering is applicable to the measurement of neutral temperature in weakly ionized plasmas. Experimental results are given for glow discharges. We also discuss the possibility of acoustic detection of energy deposition by optical lattice generated with two crossing laser beams. Again, ponderomotive forces perturb the translational motion of gas particles and energy is transferred from laser beams into the gas. Numerical calculation shows that the power deposition is a function of the laser beams' frequency difference. And such a power deposition curve bears the information of the gas particles' Maxwell-Boltzmann distribution, therefore, gas temperature can be derived from such a measurement.

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DO - 10.1109/PPPS.2001.01002126

M3 - Conference contribution

AN - SCOPUS:84951999267

T3 - PPPS 2001 - Pulsed Power Plasma Science 2001

SP - 434

EP - 437

BT - PPPS 2001 - Pulsed Power Plasma Science 2001

A2 - Reinovsky, Robert

A2 - Newton, Mark

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 28th IEEE International Conference on Plasma Science and 13th IEEE International Pulsed Power Conference, PPPS 2001

Y2 - 17 June 2001 through 22 June 2001

ER -

Pan X, Qian L, Shneider MN, Miles RB, Barker PF. Plasma measurements using ponderomotive forces to perturb the translational motion of particles. In Reinovsky R, Newton M, editors, PPPS 2001 - Pulsed Power Plasma Science 2001. Institute of Electrical and Electronics Engineers Inc. 2015. p. 434-437. 1002126. (PPPS 2001 - Pulsed Power Plasma Science 2001). doi: 10.1109/PPPS.2001.01002126

Plasma measurements using ponderomotive forces to perturb the translational motion of particles

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