Effects of Plasma Dynamics on Lasing in Fast Capillary Discharge
Effects of Plasma Dynamics on Lasing in Fast Capillary Discharge
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DOI：
10.1143/jjap.47.2250
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发表时间：
2008-04
影响因子：
1.5
通讯作者：
N. Sakamoto;M. Masnavi;M. Nakajima;T. Kawamura;K. Horioka
中科院分区：
文献类型：
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作者：
N. Sakamoto;M. Masnavi;M. Nakajima;T. Kawamura;K. Horioka
实验研究了类Ne Ar强2p53p-2p53s跃迁的快毛细管放电等离子体中激光信号的时间、强度和脉宽。为了阐明激光机理，将计算结果与一维磁流体力学(MHD)模拟程序的计算结果进行了比较。结果表明，当柱面内爆激波到达毛细管轴线时，激光就会发生，它不仅与电子密度和温度有关，而且与时变折射效应和收缩等离子体的不透明度密切相关。
The timing, intensity, and pulse width of lasing signals in fast capillary discharge plasma at a strong 2p53p–2p53s transition of Ne-like Ar are experimentally investigated. To clarify the lasing mechanism, the results are compared with those obtained by numerical calculation using a one-dimensional magneto-hydrodynamics (MHD) simulation code. The comparison indicates that the lasing occurs when a cylindrically imploding shock wave arrives at the axis of the capillary and it depends not only on the electron density and temperature but also strongly on the effects of time-varying refraction and the opacity of the pinching plasma.