Comparison of the electron density measurements using Thomson scattering and emission spectroscopy for laser induced breakdown in one atmosphere of helium

E. Nedanovska; G. Nersisyan; T. J. Morgan; L. Hüwel; C. L. S. Lewis; D. Riley; W. G. Graham

doi:10.1063/1.3672817

Comparison of the electron density measurements using Thomson scattering and emission spectroscopy for laser induced breakdown in one atmosphere of helium

E. Nedanovska^*, G. Nersisyan, T. J. Morgan, L. Hüwel, C. L. S. Lewis, D. Riley, W. G. Graham

^*Corresponding author for this work

School of Mathematics and Physics

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Abstract

Thomson scattering from laser-induced plasma in atmospheric helium was used to obtain temporally and spatially resolved electron temperature and density profiles. Electron density measurements at 5 s after breakdown are compared with those derived from the separation of the allowed and forbidden components of the 447.1 nm He I line. Plasma is created using 9 ns, 140 mJ pulses from Nd:YAG laser at 1064 nm. Electron densities of ~5 × 10 cm are in good agreement with Thomson scattering measurements, benchmarking this emission line as a useful diagnostic for high density plasmas.

Original language	English
Article number	261504
Number of pages	3
Journal	Applied Physics Letters
Volume	99
Issue number	26
DOIs	https://doi.org/10.1063/1.3672817
Publication status	Published - 26 Dec 2011

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Comparison of the electron density measurements using Thomson scattering and emission spectroscopy for laser induced breakdown in one atmosphere of helium
Copyright 2011 American Institute of Physics. This work is made available online in accordance with the publisher’s policies. Please refer to any applicable terms of use of the publisher.
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title = "Comparison of the electron density measurements using Thomson scattering and emission spectroscopy for laser induced breakdown in one atmosphere of helium",

abstract = "Thomson scattering from laser-induced plasma in atmospheric helium was used to obtain temporally and spatially resolved electron temperature and density profiles. Electron density measurements at 5 s after breakdown are compared with those derived from the separation of the allowed and forbidden components of the 447.1 nm He I line. Plasma is created using 9 ns, 140 mJ pulses from Nd:YAG laser at 1064 nm. Electron densities of ~5 × 10 cm are in good agreement with Thomson scattering measurements, benchmarking this emission line as a useful diagnostic for high density plasmas.",

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AU - Nedanovska, E.

AU - Nersisyan, G.

AU - Morgan, T. J.

AU - Hüwel, L.

AU - Lewis, C. L. S.

AU - Riley, D.

AU - Graham, W. G.

PY - 2011/12/26

Y1 - 2011/12/26

N2 - Thomson scattering from laser-induced plasma in atmospheric helium was used to obtain temporally and spatially resolved electron temperature and density profiles. Electron density measurements at 5 s after breakdown are compared with those derived from the separation of the allowed and forbidden components of the 447.1 nm He I line. Plasma is created using 9 ns, 140 mJ pulses from Nd:YAG laser at 1064 nm. Electron densities of ~5 × 10 cm are in good agreement with Thomson scattering measurements, benchmarking this emission line as a useful diagnostic for high density plasmas.

AB - Thomson scattering from laser-induced plasma in atmospheric helium was used to obtain temporally and spatially resolved electron temperature and density profiles. Electron density measurements at 5 s after breakdown are compared with those derived from the separation of the allowed and forbidden components of the 447.1 nm He I line. Plasma is created using 9 ns, 140 mJ pulses from Nd:YAG laser at 1064 nm. Electron densities of ~5 × 10 cm are in good agreement with Thomson scattering measurements, benchmarking this emission line as a useful diagnostic for high density plasmas.

U2 - 10.1063/1.3672817

DO - 10.1063/1.3672817

M3 - Article

SN - 0003-6951

VL - 99

JO - Applied Physics Letters

JF - Applied Physics Letters

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M1 - 261504

ER -

Comparison of the electron density measurements using Thomson scattering and emission spectroscopy for laser induced breakdown in one atmosphere of helium

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