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

被引：5

作者：

Nedanovska, E. ^{[1
]}

Riley, D. ^{[1
]}

Lewis, C. L. S. ^{[1
]}

Morgan, T. ^{[2
]}

Huewel, L. ^{[2
]}

Nersisyan, G. ^{[1
]}

Graham, W. G. ^{[1
]}

机构：

[1] Queens Univ Belfast, Ctr Plasma Phys, Belfast BT7 1NN, Antrim, North Ireland

[2] Wesleyan Univ, Dept Phys, Middletown, CT 06457 USA

来源：

17TH INTERNATIONAL CONFERENCE ON ATOMIC PROCESSES IN PLASMAS (ICAPIP) | 2012年 / 1438卷

关键词：

Laser Breakdown; Thomson Scattering;

D O I：

10.1063/1.4707851

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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.

引用

页码：29 / 32

页数：4

共 5 条

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