Dynamics of laser produced carbon plasma expanding in low pressure ambient atmosphere

被引：31

作者：

Neogi, A ^{[1
]}

Mishra, A

Thareja, RK

机构：

[1] Indian Inst Technol, Dept Phys, Kanpur 208016, Uttar Pradesh, India

[2] Indian Inst Technol, Ctr Laser Technol, Kanpur 208016, Uttar Pradesh, India

来源：

JOURNAL OF APPLIED PHYSICS | 1998年 / 83卷 / 05期

关键词：

D O I：

10.1063/1.366994

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The laser produced carbon plasma expanding in vacuum (P<10(-3) Torr) and low pressure ambient atmosphere (P<10(-2) Torr and P=10(-1) Torr) has been studied by emission spectroscopy and fast photography using intensified charged coupled device (ICCD). The double peak structure is observed in the temporal profile of C I transition 2p(3) D-3(0)-8f F (5/2) at 399.7 nm, C II transition 3d D-2-4f F-2(0) at 426.7 nm, and C III transition 3s S-3-3p P-3(0) at 465.0 nm as the plasma expands in ambient atmosphere. The stratification of the plasma into slow and fast components is imaged using ICCD. A compression wave model is proposed to explain the occurrence of a double peak structure. (C) 1998 American Institute of Physics.

引用

页码：2831 / 2834

页数：4

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