Study of heating effects during Thomson scattering in laser induced plasma in air
Language
en
Article de revue
This item was published in
Contributions to Plasma Physics. 2011-03-01, vol. 51, n° 2-3, p. 171-175
Wiley-VCH Verlag
English Abstract
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 ...Read more >
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 7.4×1017 cm−3 to 1.0×1017 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.Read less <
English Keywords
Laser induced plasma
Thomson scattering
plasma heating
inverse bremsstrahlung
Origin
Hal imported