On relationship of ionization probability and radiation harmonics of hydrogen atom in laser field 激光场中氢原子电离几率与辐射谐波关系研究
The series of results indicate that there is a certain relationship between the ionization probability and the pulse shape, which in turn influences the character of HHG. 结果表明脉冲形状和电离率之间有着确定的关系,电离率反过来又影响了谐波谱的性质;
Furthermore, for the ( 2+ 1) REMPI of oxygen atom with the 2p~ 34p as resonant state, the dependence of the ionization probability on laser intensity, pulse width and resonance detuning was discussed. 研究了氧原子经共振态2p34p(2+1)共振增强多光子电离的电离几率与激光脉宽、激光光强及失谐量等参数的关系;
The dependence of the 7-photon ionization probability of lead atoms on the statistical properties of laser pulse has been analysed by varying the spectral bandwidth of the laser pulse. 通过改变激光脉冲的线宽研究了铅原子非共振7-光子电离速率和激光统计性的依赖关系。
Results show that the laser intensity play a critical role in the ionization of He+ ions, the ionization probability increases as intensity and wavelength of the laser, until saturation ionization. 结果表明:激光强度对于电离的变化起到了决定性的作用,随着激光强度和波长的变大,增强电离现象越来越明显,电离率不断变大,但是大到一定的值时,电离达到饱和。
The results show that the change of ionization probability with inter-nuclei distance is clearly influenced by the laser intensities of the fundamental field, but it almost keeps unchanged with different ratios of intensity. 计算结果表明,不同的基波激光强度可以明显改变电离几率随原子间距变化的趋势,而随着基波和谐波激光强度之间配比的变化,电离几率随原子间距变化的趋势基本保持不变。
The ionization probability evolution with laser parameters is calculated in different cases. 计算了在不同情况下电离几率与激光参数的变化关系。
The numerical results demonstrate that the influence of the relative phase on the ionization probability is the strongest in the range of the inter-nuclear distance where the EI occurs. 计算结果表明,在发生增强电离行为的核间距处,相对相位对电离概率的影响最为显著。
The ionization probability and high-order harmonic spectrum of hydrogen atom under different laser pulse are computed by solving the time-dependent Schrodinger equation of hydrogen atom in a intense laser field, in which an algorithm of split-operator is quoted. 采用二阶劈裂算子算法,通过数值求解强激光场中基态氢原子的含时薛定谔方程,计算了不同的激光脉宽下氢原子的电离率和高次谐波。
When the cluster increases in size, its ionization probability also increases. This means that a larger cluster has greater ability to absorb the external field energy. 当原子团簇尺寸较大时,其电离几率大于原子的电离几率,原子团簇越大,电离几率也越大,大尺寸原子团簇更易吸收外场能量。
We can realize completely efficiency ionization probability under the condition of low Rabi frequencies by employing lower power and time-delayed laser pulse. 采用两脉冲之间具有一定延迟的驱动和探测激光场,可以实现在较低Rabi频率情况下粒子的全部高效率电离。
As the laser frequency increases, the critical value of bond length for EI decreases and the ionization probability decreases too. 激光频率的增加,会使发生增强电离的关键键长变小,电离几率也减小;
The angle distribution of the photoelectron ionization probability is analyzed numerically. The influence of the interference on the photoelectron distribution state is investigated. 解析分析了光电子电离几率的角分布规律;研究了光电子角分布状态受光电子干涉效应的影响。