LASER-PRODUCED CARBON PLASMA IN AN AMBIENT GAS

被引：22

作者：

ABHILASHA ^{[1
]}

PRASAD, PSR ^{[1
]}

THAREJA, RK ^{[1
]}

机构：

[1] INDIAN INST TECHNOL,CTR LASER TECHNOL,KANPUR 208016,UTTAR PRADESH,INDIA

来源：

PHYSICAL REVIEW E | 1993年 / 48卷 / 04期

关键词：

D O I：

10.1103/PhysRevE.48.2929

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

We report a detailed investigation of the double-peak structure in the temporal profile of the C II transition 3d2D - 4f2F0 at 426.7 nm in a laser-produced carbon plasma at various air pressures. An estimate of the plasma expansion velocity from the temporal behavior at various distances from the target for C II, C III, and C IV species and electron density from the Stark broadened transition is also reported. It is proposed that the second peak in temporal profiles originates mainly due to stratification of the plasma into fast and slow ion components at the interface where the occurrence of the Rayleigh-Taylor instability causes deceleration of the laser plasma front by ambient gas.

引用

页码：2929 / 2933

页数：5

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