The fundamental electrical power generation experiment of a pulsed‐laser‐driven magnet hydrodynamics generator with a divergent channel and segmented electrodes has been conducted with a rough estimate of gas heating efficiency of laser energy. The output energy is increased with the decrease in the initial filling gas pressure because of the increase in the gas velocity and the electrical conductivity with the gas temperature. The output power is surely improved in comparison with the previously examined generator with constant height channel and continuous electrode. About 70% of the incident laser energy is absorbed and less than 20% is transferred to the blast wave energy at low initial filling gas pressure in the present experimental setup.

中文翻译：

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脉冲激光驱动MHD发电的等离子体行为和特性

进行了带有发散通道和分段电极的脉冲激光驱动的磁流体动力学发生器的基本发电实验，并大致估算了激光能量的气体加热效率。由于气体速度和电导率随气体温度的增加，输出能量随初始填充气体压力的降低而增加。与先前检查过的具有恒定高度通道和连续电极的发电机相比，输出功率肯定得到了改善。在本实验装置中，在较低的初始填充气体压力下，大约70％的入射激光能量被吸收，而不到20％的能量被转换为爆炸波能量。