中国物理B ›› 2007, Vol. 16 ›› Issue (12): 3728-3731.doi: 10.1088/1009-1963/16/12/028
刘 峰1, 张 翼2, 李玉同2, 刘 峰2, 仲佳勇2, 林晓暄2, 鲁 欣2, 张 杰2, 郑志远3
Zhang Yi(张翼)a), Li Yu-Tong(李玉同)a), Zheng Zhi-Yuan(郑志远)a)b), Liu Feng(刘峰)a), Zhong Jia-Yong(仲佳勇)a), Lin Xiao Xuan(林晓暄)a), Liu Feng(刘峰)a), Lu Xin(鲁欣)a), and Zhang Jie(张杰)a)†
摘要: The evolution of shock waves produced by 7 ns laser pulses in air is investigated by time-resolved shadowgraph. A nodular structure of the shock wave is observed. It is found that the origin of the structure is the multi-longitudinal-microfocus caused by the astigmatism of the laser beam. The spherical shock waves formed by each microfocus expand gradually and collide with each other, resulting in the nodular structure of the shock wave.
中图分类号: (Shock waves and discontinuities)