论文标题
$ H_2+$分离电离中自由人共鸣的理论调查
Theoretical investigation of the Freeman resonance in the dissociative ionization of $H_2+$
论文作者
论文摘要
$ h_2^+$在线性极化，400 nm激光脉冲中的解离电离通过以完全维度求解三颗粒时间依赖性的schrödinger方程来模拟。使用时间相关的表面通量（TSURFF）方法计算以$ \ cos^8 $和平顶信封计算的关节能谱（JES）。在JES中，核动能释放的能源共享$ n $光子能量$ω$ $ e_n $和电子ker $ e_e $在$ e_n+e_e =nΩ-u_p+e_0 $ for $ \ cos cos^8 $中均得到很好的表示在实验中观察到的Ponderomotive Energy $ U_P $，其中$ e_0 $是$ H_2^+$的地面能量。提出了脉冲后电子和质子的波函数的分析，在此我们发现$ u_p $被两个激动的连接状态之间的弗里曼共振吸收。
The dissociative ionization of $H_2^+$ in linearly polarized, 400 nm laser pulses is simulated by solving a three-particle time-dependent Schrödinger equation in full dimensionality. The joint energy spectra (JES) are computed for $\cos^8$ and flat-top envelopes using the time-dependent surface flux (tSurff) methods. In JES, the energy sharing $n$ photon energies $ω$ of nuclear kinetic energy release (KER) $E_N$ and electronic KER $E_e$ are well represented by $E_N+E_e=nω-U_p+E_0$ for $\cos^8$ pulses, but satisfy $E_N+E_e=nω+E_0$ for flat-top envelope, exposing a deviation of the ponderomotive energy $U_p$, which has been observed in experiments, where $E_0$ is the ground energy of $H_2^+$. The analysis of the wavefunction for electrons and protons after the pulse are presented, where we find $U_p$ is absorbed by the Freeman resonances between two excited ungerade states.
