A5101810855- Atomic and Molecular Physics
- Advanced Chemical Physics Studies
- Mass Spectrometry Techniques and Applications
- Cold Atom Physics and Bose-Einstein Condensates
- Laser-Matter Interactions and Applications
- Spectroscopy and Quantum Chemical Studies
- Laser-induced spectroscopy and plasma
- X-ray Spectroscopy and Fluorescence Analysis
- Atmospheric Ozone and Climate
- Spectroscopy and Laser Applications
- Laser-Plasma Interactions and Diagnostics
- Dust and Plasma Wave Phenomena
- Ion-surface interactions and analysis
- Quantum, superfluid, helium dynamics
- Photochemistry and Electron Transfer Studies
- Molecular Spectroscopy and Structure
- Atomic and Subatomic Physics Research
- Nuclear physics research studies
- Organic Light-Emitting Diodes Research
- Magnetic confinement fusion research
- Quantum optics and atomic interactions
- Solar and Space Plasma Dynamics
- High-pressure geophysics and materials
- Astro and Planetary Science
- Molecular Junctions and Nanostructures
Institute of Applied Physics and Computational Mathematics
2016-2025
Peking University
2007-2025
Ningbo University
2023-2024
Kunshan Govisionox Optoelectronic (China)
2024
Shaanxi Normal University
2024
University of Science and Technology Beijing
2024
Computational Physics (United States)
2007-2023
Nanjing Normal University
2023
Anhui Xinhua University
2022
University of Chinese Academy of Sciences
2009-2019
Plasma screening effects on the high-energy electron-impact excitation of hydrogenlike ions are investigated under first Born approximation. The interactions described by Debye–Hückel model, and wave functions calculated numerically in a symplectic scheme. generalized oscillator strengths (GOS) for transitions between principal quantum number n⩽3 bound states presented, as an example, scaled differential cross sections total 1s→2s 2p 2s→2p also given. It is found that plasma reduce GOS with...
We present all-electron close-coupling calculations of cross sections for electron capture and target excitation occurring in 0.25--200 keV/u ${\mathrm{He}}^{+}\text{\ensuremath{-}}\mathrm{H}$ collisions. show overall good agreements with available experimental data total capture, $n=2$ excitation, related ${\mathrm{H}}_{\ensuremath{\alpha}}$ emission. especially focus on $n\ensuremath{\ell}$-selective processes critically compare our results those from previous theoretical investigations....
Abstract The injection of energetic neutral particles into the plasma magnetic confinement fusion reactors is a widely-accepted method for heating such plasmas; various types beam are also used diagnostic purposes. Accurate atomic data required to properly model penetration and interpret photoemission spectra from both themselves (e.g. emission spectroscopy) impurities with which they interact charge exchange recombination spectroscopy). This paper reviews compares theoretical methods...
Complicated many-body interactions between ions and surrounding particles exist in warm hot dense plasmas. It will significantly alter the atomic structures dynamic properties of embedded ions. Recently, atomic-state-dependent (ASD) screening model has been proposed shown to be valid for investigating effect plasmas over a wide range electron densities temperatures. By employing ASD model, we investigate photoionization process hydrogenlike carbon ion with corresponding Coulomb coupling...
Complex multi-body interactions between ions and surrounding charged particles exist in hot dense plasmas. It will screen the Coulomb potential nucleus electrons, significantly change atomic structures dynamic properties. This further affect macroscopic plasma properties such as radiation opacity equation of state. Based on atomic-state-dependent (ASD) screening model, we investigate photoionization Fe<sup>25+</sup> ion The cross section for all transition channels total sections...
Electron transfer processes in ${\mathrm{He}}^{+}+\mathrm{He}$ collisions are studied theoretically using a three-electron semiclassical atomic-orbital close-coupling method wide energy domain, from 1 to 225 keV/u. Total, state-selective, and angular-differential cross sections presented compared with available experimental theoretical results. A prominent oscillatory dependence structure the transfer-excitation is observed explained by strong competition between these channels...
The electron-capture processes in ${\mathrm{C}}^{4+}$ + He collisions have been studied theoretically using a two-active-electron semiclassical atomic-orbital close-coupling method wide energy domain. results of the present calculations are compared with available theoretical predictions and experimental measurements: very good agreements found for both total state-selective single-electron-capture (SEC) double-electron-capture (DEC) cross sections. We extend understanding on that system to...
Background/Objectives: Quality by Design (QbD) has revolutionized pharmaceutical development transitioning from reactive quality testing to proactive, science-driven methodologies. Rooted in ICH Q8–Q11 guidelines, QbD emphasizes defining Critical Attributes (CQAs), establishing design spaces, and integrating risk management enhance product robustness regulatory flexibility. This review critically examines QbD’s theoretical frameworks, implementation workflows, industrial applications, aiming...
The photoionization cross sections in the photoelectron energy below 2 Ry are calculated for ground and n≤4 excited states of Li embedded plasma environments radiative-recombination (RR) rate coefficients Li+ were presented temperature T=100–32 000 K a wide range parameters. screening interaction is described by Debye–Hückel model levels wave functions including both bound continuum solving Schrödinger equation numerically symplectic integration scheme. Coulomb interactions remarkably...
How the neighbor effect plays its role in fragmentation of molecular clusters attracts great attention for physicists and chemists. Here, we study this N_{2}O dimer by performing three-body coincidence measurements on femtosecond timescale. Rotations bound N_{2}O^{+} triggered neutral or ionic neighbors are tracked. The forbidden dissociation path between B^{2}Π ^{4}Π is opened spin-exchange due to existence ions, leading a new channel N_{2}O^{+}→NO+N^{+} originating from B^{2}Π. formation...
Abstract Real-time imaging of transient structure the electronic excited state is fundamentally critical to understand and control ultrafast molecular dynamics. The ejection electrons from inner-shell valence level can lead population different states, which trigger manifold relaxation processes, however, accurate such state-dependent structural evolutions still lacking. Here, by developing laser-induced electron recollision-assisted Coulomb explosion approach dynamics simulations, snapshots...
We investigate the intermolecular nonradiative charge transfer process in a double hydrogen-bonded formic acid (FA) dimer, initiated by electron-collision induced ionization of one FA molecule. Through fragment ions and electron coincident momentum measurements ab initio calculations, we obtain direct evidence that from neighboring molecule to fill two vacancies occurs potential energy curve crossing FA^{++}+FA with FA^{+}+FA^{+*} curves, forming an electronic excited state dicationic...
In this Letter, we propose a novel laser-induced inelastic diffraction (LIID) scheme based on the intense-field-driven atomic nonsequential double ionization (NSDI) process and demonstrate that, with LIID approach, doubly differential cross sections (DDCSs) of target ions, e.g., ${\mathrm{Ar}}^{+}$ ${\mathrm{Xe}}^{+}$, can be accurately extracted from two-dimensional photoelectron momentum distributions in NSDI corresponding atoms. The DDCSs exhibit strong dependence both laser intensity,...
Abstract Van der Waals clusters are weakly bound atomic/molecular systems and an important medium for understanding micro-environmental chemical phenomena in bio-systems. The presence of neighboring atoms may open channels otherwise forbidden isolated atoms/molecules. In hydrogen-bond clusters, proton transfer plays a crucial role, which involves mass charge migration over large distances within the cluster results its fragmentation. Here we report exotic channel involving heavy N + ion...
Abstract The nonlocal thermodynamical equilibrium (NLTE) line formation of Y i and ii is considered in 1D LTE model atmospheres FGK-type stars. atom was constructed with the most up-to-date atomic data, including quantum cross sections rate coefficients for transitions inelastic collisions hydrogen atoms. For seven reference stars, we obtained an agreement between NLTE abundances inferred from two ionization stages, while difference abundance (Y ) can reach up to −0.31 dex. In both lines,...
${\mathrm{H}}^{+}\ensuremath{-}{\mathrm{H}}_{2}\mathrm{O}$ collisions are investigated using the time-dependent density-functional theory combined with molecular dynamics method, in which electrons described quantum mechanically within framework of and ionic cores classically by Newton's equations. The feedback between classical ions is self-consistently coupled Ehrenfest's method. electron capture, loss, ionization cross sections obtained energy range 1--1000 keV excellent agreements...
The calculation of triple-differential cross sections for the electron-impact ionization $10{a}^{\ensuremath{'}}$ and $2{a}^{\ensuremath{'}\ensuremath{'}}$ orbitals formic acid (HCOOH) molecule has been carried out by multicenter distorted-wave method. coplanar asymmetric kinematics is considered at incident energies 100 $250\phantom{\rule{0.16em}{0ex}}\text{eV}$, where previous experiments theories are available comparison. present calculations reproduce experimental measurements...