Finite element analysis of ring-shaped emission profile in plasma bullet
Finite element analysis of ring-shaped emission profile in plasma bullet
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DOI：
10.1063/1.3298639
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发表时间：
2010-01-25
影响因子：
4
通讯作者：
Laroussi, Mounir
中科院分区：
文献类型：
--
作者：
Sakiyama, Yukinori;Graves, David B.;Laroussi, Mounir
使用中性气体流和等离子体动力学的单向耦合模型，我们报告了一种机制来解释在大气压下在等离子体子弹中实验观察到的环形发射模式。我们用一维柱坐标中的局部场近似求解流体模型，对应于等离子子弹的横截面。假设脉冲状均匀电场垂直于模拟域施加。时间和空间分辨光谱测量支持模拟结果。
Using a one-way coupled model of neutral gas flow and plasma dynamics we report a mechanism to explain the ring-shaped emission pattern that has been observed experimentally in plasma bullets at atmospheric pressure. We solve a fluid model with the local field approximation in one-dimensional cylindrical coordinates, corresponding to a cross-section of a plasma bullet. Pulselike uniform electric field is assumed to be applied perpendicular to the simulation domain. Time and spatially resolved spectroscopic measurements support the simulation results.