Kumar Ajai, Chaudhari Vishnu, Patel Kiran, George Sony, Sunil S, Singh R K, Singh Ranjeet
Institute for Plasma Research Bhat, Gandhinagar 382 428, India.
Rev Sci Instrum. 2009 Mar;80(3):033503. doi: 10.1063/1.3095545.
In the present work we report generation of uniform and variable pulsed magnetic field in synchronization with pulsed plasma for the study of the expansion dynamics of laser blow-off (LBO) plasma plume. The experimental procedure for optimizing various parameters of the setup, e.g., the production of pulsed field and its synchronization with pulsed plasma and diagnostics system, is also reported. Until now the effect of magnetic field was studied using fixed field. The present setup, however, provides variable and uniform field in synchronization with the setup. A low cost time sequencing control module has been developed for the above purpose. Although the main emphasis is on the technical aspect of the setup, salient features of the effect of transverse magnetic field on the evolution features of the neutral and ionic species are also reported briefly. It is observed that LBO generated plume have a stronger correlation with the magnetic field in comparison to the conventional laser produced plasma experiments as reported earlier.
在本工作中，我们报告了与脉冲等离子体同步产生均匀和可变脉冲磁场，以研究激光吹脱（LBO）等离子体羽流的膨胀动力学。还报告了优化装置各种参数的实验程序，例如脉冲场的产生及其与脉冲等离子体和诊断系统的同步。到目前为止，磁场的影响是使用固定场进行研究的。然而，目前的装置可提供与装置同步的可变和均匀场。为此已开发了一种低成本的时间序列控制模块。虽然主要重点是装置的技术方面，但也简要报告了横向磁场对中性和离子物种演化特征影响的显著特点。据观察，与先前报道的传统激光产生等离子体实验相比，LBO产生的羽流与磁场具有更强的相关性。
