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The space-time distribution studies of laser strength in keudsen layers about strong laser metal do compound gasification
Author(s): 
Pages: 62-63,65
Year: Issue:  4
Journal: LASER JOURNAL

Keyword:  激光辐照时空分布汽离混合区吸收系数约化强度;
Abstract: 修正了激光辐照下金属材料复合气化汽离混合区对激光的吸收系数,导出了汽离混合区激光强度的时空分布关系,分析了汽离混合区的吸收系数和激光强度与关联参数的牵联机制,结果发现:(1)汽离混合区的吸收系数和激光约化强度虽然较小,但随时间分别成正弦和余弦规律分布.(2)在汽离混合区,随着入射激光波长的增加,各处的吸收系数和约化强度分别按周期性指数规律增加和减少,不同时间点的吸收规律类似,但变化周期不同.(3)汽离混合区吸收系数随着位置坐标的增加而增加,且增加规律为指数规律;激光约化强度随着位置坐标的增加而加速减少.
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