...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physical Review, A >Laser control over the ultrafast Coulomb explosion of N_2~(2+) after Auger decay: A quantum-dynamics investigation
【24h】

Laser control over the ultrafast Coulomb explosion of N_2~(2+) after Auger decay: A quantum-dynamics investigation

机译：在螺旋衰减后，激光控制N_2〜（2+）的Ultrafast库仑爆炸：量子动力学调查

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

By theoretical calculation, we demonstrate the possibility to control and partially suppress the Coulomb explosion of N_2 molecules after core-level photoionization by an x-ray laser and subsequent Auger decay. This is achieved by means of a femtosecond infrared laser pulse interacting with the N_2~(2+) dication produced by the x-ray pulse. Suppression of molecular fragmentation requires few-femtosecond IR pulses interacting with the system either during or shortly after the arrival of the x-ray pulse. The IR pulse suppresses fragmentation mostly by optically coupling the electronic routes to ultrafast molecular dissociation with electronic channels able to support long-lived vibrational resonances. The effect is strongly dependent on the orientation of the molecule with respect to the polarization axis of the IR field. Our calculations are motivated by x-ray pump–IR probe experiments performed at an x-ray free-electron laser [J. M. Glownia et al., Opt. Express 18, 17620 (2010)], where only enhancement of N_2~(2+) fragmentation as a function of the pump-probe delay time was reported. The opposite effect reported here becomes apparent when the various electronic channels are considered separately. In practice, this corresponds to a coincident measurement of the energy of the ejected Auger electron.
机译：通过理论计算，我们证明了通过X射线激光和随后的螺旋衰减后控制和部分抑制N_2分子的库仑爆炸的可能性。这是通过与由X射线脉冲产生的N_2〜（2+）标准相互作用的飞秒红外激光脉冲来实现。抑制分子碎片需要很少 - 飞秒红外脉冲在X射线脉冲到达后或不久地与系统相互作用。 IR脉冲主要通过光学耦合到超快分子解离的电子通道用能够支撑长寿命的振动共振来抑制碎片。效果强烈依赖于相对于IR场的偏振轴的分子的取向。我们的计算是由在X射线自由电子激光器上进行的X射线泵-R-IR探针实验的激励[J. M. Glownia等，选择。报告了Express 18,17620（2010）]，其中仅报告了作为泵探针延迟时间的函数的N_2〜（2+）碎片的增强。当分别考虑各种电子通道时，这里报告的相反效果变得明显。在实践中，这对应于弹出螺旋钻电子的能量的重合测量。

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