Comparing Optical Thomson Scattering With Emission Spectroscopy In He Plasmas Induced By Laser Breakdown At 1 Atmosphere

E. Nedanovska, D. Riley, C. L. S. Lewis, T. Morgan, L. Huewel, G. Nersisyan, W. G. Graham

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

We have carried out optical Thomson scattering measurements from a laser induced breakdown in He at 1 atmosphere. The breakdown was created with a Nd:YAG laser with 9ns pulse duration and 400mJ pulse energy focused into a chamber filled with He. A second harmonic Nd: YAG laser with 9ns pulses and up to 80mJ energy was used to obtain temporally and spatially resolved data on the electron density and temperature. In parallel experiments, we measured the emission of the 447.1nm line from He I. Initial results suggest good agreement between densities inferred but full Abel inversion is needed for conclusive results.

Original languageEnglish
Title of host publication17TH INTERNATIONAL CONFERENCE ON ATOMIC PROCESSES IN PLASMAS (ICAPIP)
EditorsK Aggarwal, F Shearer
Place of PublicationMELVILLE
PublisherAMER INST PHYSICS
Pages29-32
Number of pages4
Volume1438
ISBN (Print)978-0-7354-1029-9
DOIs
Publication statusPublished - 2012
Event17th International Conference on Atomic Processes in Plasmas (ICAPiP) - Belfast, United Kingdom
Duration: 19 Jul 201122 Jul 2011

Conference

Conference17th International Conference on Atomic Processes in Plasmas (ICAPiP)
CountryUnited Kingdom
CityBelfast
Period19/07/201122/07/2011

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