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Title: Investigation of picosecond thermodynamics in a laser-produced plasma using Thomson scattering

Abstract

The picosecond evolution of the plasma conditions in a laser-produced plasma was measured using a Thomson-scattering diagnostic. The picosecond resolved Thomson spectra was enabled by a pulse-front-tilt-compensated spectrometer. The Thomson spectra revealed a transition in the plasma conditions from an initially cold evolving plasma to a quasi-stationary equilibrium plasma. The equilibrium temperature was found to match the generalized heat equation's predicted scaling $${T}_{e}\propto {n}_{e}^{2/5}$$ and $${T}_{e}\propto {I}^{1/5}$$. Here, the plasma evolution was compared to Raman gain bandwidth calculations and showed a time-dependent resonance detuning that would limit the transfer efficiency of a Raman plasma amplifier in the linear regime.

Authors:
ORCiD logo [1];  [2];  [2];  [1];  [2];  [2];  [1]
  1. Univ. of Rochester, Rochester, NY (United States). Lab. for Laser Energetics and Dept. of Physics and Astronomy
  2. Univ. of Rochester, Rochester, NY (United States). Lab. for Laser Energetics
Publication Date:
Research Org.:
Univ. of Rochester, Rochester, NY (United States). Lab. for Laser Energetics
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
Contributing Org.:
Laboratory for Laser Energetics, University of Rochester
OSTI Identifier:
1573896
Report Number(s):
2019-30, 1526
Journal ID: ISSN 0741-3335; 2019-30, 2486, 1526
Grant/Contract Number:  
NA0003856
Resource Type:
Accepted Manuscript
Journal Name:
Plasma Physics and Controlled Fusion
Additional Journal Information:
Journal Volume: 62; Journal Issue: 1; Conference: 46th European Physical Society Conference on Plasma Physics, Milan (Italy), 8-12 Jul 2019; Journal ID: ISSN 0741-3335
Publisher:
IOP Science
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; plasma thermodynamics; laser-plasma interactions; time-resolved light scattering spectroscopy; optical plasma measurements; ultrafast optics; laser light absorption in plasmas

Citation Formats

Davies, A. S., Haberberger, D., Katz, J., Bucht, S., Palastro, J. P., Follett, R. K., and Froula, D. H. Investigation of picosecond thermodynamics in a laser-produced plasma using Thomson scattering. United States: N. p., 2019. Web. doi:10.1088/1361-6587/ab49db.
Davies, A. S., Haberberger, D., Katz, J., Bucht, S., Palastro, J. P., Follett, R. K., & Froula, D. H. Investigation of picosecond thermodynamics in a laser-produced plasma using Thomson scattering. United States. doi:10.1088/1361-6587/ab49db.
Davies, A. S., Haberberger, D., Katz, J., Bucht, S., Palastro, J. P., Follett, R. K., and Froula, D. H. Tue . "Investigation of picosecond thermodynamics in a laser-produced plasma using Thomson scattering". United States. doi:10.1088/1361-6587/ab49db.
@article{osti_1573896,
title = {Investigation of picosecond thermodynamics in a laser-produced plasma using Thomson scattering},
author = {Davies, A. S. and Haberberger, D. and Katz, J. and Bucht, S. and Palastro, J. P. and Follett, R. K. and Froula, D. H.},
abstractNote = {The picosecond evolution of the plasma conditions in a laser-produced plasma was measured using a Thomson-scattering diagnostic. The picosecond resolved Thomson spectra was enabled by a pulse-front-tilt-compensated spectrometer. The Thomson spectra revealed a transition in the plasma conditions from an initially cold evolving plasma to a quasi-stationary equilibrium plasma. The equilibrium temperature was found to match the generalized heat equation's predicted scaling ${T}_{e}\propto {n}_{e}^{2/5}$ and ${T}_{e}\propto {I}^{1/5}$. Here, the plasma evolution was compared to Raman gain bandwidth calculations and showed a time-dependent resonance detuning that would limit the transfer efficiency of a Raman plasma amplifier in the linear regime.},
doi = {10.1088/1361-6587/ab49db},
journal = {Plasma Physics and Controlled Fusion},
number = 1,
volume = 62,
place = {United States},
year = {2019},
month = {10}
}

Journal Article:
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