Re-Heating Effect on the Enhancement of Plasma Emission Generated from Fe Under Femtosecond Double-Pulse Laser Irradiation

WANG Ying; CHEN Anmin; LI Suyu; SUI Laizhi; LIU Dunli; LI Shuchang; LI He

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Re-Heating Effect on the Enhancement of Plasma Emission Generated from Fe Under Femtosecond Double-Pulse Laser Irradiation

机译：飞秒双脉冲激光辐照对铁所产生的等离子体发射增强的再加热效应

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In this paper, we present a study on the effect of inter-pulse delay using femtosecond double-pulse laser-induced breakdown spectroscopy in a collinear geometry. The temporal evolution of spectral intensity is performed for the lines of Fe I 423.60 nm, Fe I 425.08 nm and Fe I 427.18 nm. It is found that, by selecting appropriate inter-pulse delay, the signal enhancement can be significantly increased compared with the single-pulse case. A three-fold enhancement in the current experiment is obtained. The plasma temperature and electron density are also investigated based on the theory of Boltzmann plot and Stark broadening. We attribute the main mechanism for emission enhancement to the plasma re-heating effect.

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《等离子体科学和技术（英文版）》 |2016年第12期|1192-1197|共6页
作者
WANG Ying; CHEN Anmin; LI Suyu; SUI Laizhi; LIU Dunli; LI Shuchang; LI He;
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作者单位

Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;

State Key Laboratory of Laser Propulsion & Application, Equiqment Academy, Beijing 101416, China;

Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China;

Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;

State Key Laboratory of Laser Propulsion & Application, Equiqment Academy, Beijing 101416, China;

Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China;

Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;

Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China;

Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;

Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China;

Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;

Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China;

Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;

Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China;

Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;

Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China;

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Re-Heating Effect on the Enhancement of Plasma Emission Generated from Fe Under Femtosecond Double-Pulse Laser Irradiation

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