Influence of Compton scattering on the relation between laser energy and photo-acoustic signal intensity in solid

Abstract

Abstract: The photo-acoustic theory，relativity quantum theory and the model of the nonlinear Compton scattering between an electron and a multi-photon group is adopted to study the influence of Compton scattering on laser energy and photo-acoustic signal intensity in impure solid. The results show that when the nonlinear Compton scattering between the an electron and a photon group is taken place in the impure solid and the changing of the photo-acoustic transfer effect and the contribution of the crystal lattice to dielectric function are ignored，the coupling laser energy and its magnetic induction intensity are the two key factors to the changing of the photo-acoustic intensity. In these factors，the magnetic induction intensity takes key effect. Under Compton scattering，the photo-acoustic signal intensity will quickly be increased along with the increase of the coupling magnetic induction intensity and laser energy. There is a logarithm linear relation between the energy and the sound pressure of the photo-acoustic signal，but their relation will be lower than that before Compton scattering.

Key words: Photo-acoustic signal, Coupling, Multi-photon nonlinear Compton scattering

摘要： 应用光声理论、相对论量子理论和电子与多光子集团非线性Compton散射模型，研究了Compton散射对掺杂固体中光声信号强度的影响。结果表明，当掺杂固体中发生电子与多光子集团之间的多光子非线性Compton散射时，在忽略光声转换效率的变化和基质晶格对介电函数贡献的情况下，耦合激光能量和磁感应强度是影响光声信号强度的两个主要因素，其中耦合磁感应强度起主导作用。Compton散射使光声信号强度随耦合光的磁感应强度和能量的增大而迅速增大。能量与光声信号声压之间存在对数线性关系，但它相对于Compton散射前的曲线下移。

关键词: 光声信号, 耦合, 多光子非线性Compton散射

CLC Number:

O482.3

HAO Xiao-fei, YAO Qiao-ge, HAO Dong-shan. Influence of Compton scattering on the relation between laser energy and photo-acoustic signal intensity in solid[J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2010, 30(2): 127-130.

郝晓飞，姚巧鸽，郝东山. Compton散射对固体中激光能量与光声信号强度关系的影响[J]. 核聚变与等离子体物理, 2010, 30(2): 127-130.

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