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Study of Heating Effects During Thomson Scattering in Laser Induced Plasma in Air
Author(s) -
Travaillé G.,
Mendys A.,
Dzierzega K.,
Pellerin S.,
Pokrzywka B.,
Thouin E.,
Bousquet B.,
Canioni L.
Publication year - 2011
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.201000060
Subject(s) - thomson scattering , plasma , electron temperature , materials science , atomic physics , scattering , laser , electron density , plasma diagnostics , plume , optics , physics , nuclear physics , thermodynamics
The laser induced plasma in air produced by 6 ns, 532 nm Nd:YAG pulses with 25 mJ energy was studied using the Thomson scattering method and plasma imaging techniques. Thomson scattering spectra were registered at delay times ranging from 150 ns to 1 µs after the breakdown pulses. The electron density and temperature, as determined in the core of the plasma plume, were found to decrease from 7.4×10 17 cm –3 to 1.0×10 17 cm –3 and from 101 000 K to 22 700 K, respectively. These electron temperatures were found to result partially from plasma heating. This effect has been observed between the beginning and the end of the probe (Thomson) pulse (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)