...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >The effect of recoil pressure in the ablation of polycrystalline graphite by a nanosecond laser pulse
【24h】

The effect of recoil pressure in the ablation of polycrystalline graphite by a nanosecond laser pulse

机译：纳秒激光脉冲对后冲压力在多晶石墨烧蚀中的作用

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Our experiments with the ablation of graphite by a nanosecond laser pulse showed the formation of craters with a depth of upto 60 mu m. The creation of such deep craters is hard to explain solely by evaporation. Existing models should be supplemented by an additional mass removal process that ensures penetration of the material. The recoil pressure at the surface of the target generates a compression wave propagating deep into the material. Possible mechanisms of fracture by the longitudinal compression wave are discussed. A phenomenological model of material fragmentation is proposed. Modelling results are in good agreement with the experiment. The model may be used for polycrystalline graphite as well as other brittle materials treated by the nanosecond laser pulse.
机译：我们用纳秒激光脉冲烧蚀石墨的实验表明，形成了深度达60微米的弹坑。仅凭蒸发很难解释如此深的火山口的形成。现有模型应通过附加的质量去除过程加以补充，以确保材料的渗透。目标表面的反冲压力会产生一个压缩波，该压缩波深入材料内部。讨论了纵向压缩波破坏的可能机理。提出了物质破碎的现象学模型。建模结果与实验吻合良好。该模型可用于多晶石墨以及通过纳秒激光脉冲处理的其他脆性材料。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号