A5101641508- Laser-Matter Interactions and Applications
- Mass Spectrometry Techniques and Applications
- Spectroscopy and Quantum Chemical Studies
- Atomic and Molecular Physics
- Advanced Chemical Physics Studies
- Laser-induced spectroscopy and plasma
- Polymer-Based Agricultural Enhancements
- Electrospun Nanofibers in Biomedical Applications
- Rock Mechanics and Modeling
- Caching and Content Delivery
- Cold Atom Physics and Bose-Einstein Condensates
- Plant Growth Enhancement Techniques
- Landslides and related hazards
- Terahertz technology and applications
- Head and Neck Cancer Studies
- Advanced Fiber Laser Technologies
- Nuclear physics research studies
- Quantum, superfluid, helium dynamics
- Spectroscopy Techniques in Biomedical and Chemical Research
- Hygrothermal properties of building materials
- Force Microscopy Techniques and Applications
- Urban Heat Island Mitigation
- Advanced Radiotherapy Techniques
- Ion-surface interactions and analysis
- Building Energy and Comfort Optimization
Jilin University
2020-2024
Shandong Agricultural University
2023
Franklin & Marshall College
2021
Hefei National Center for Physical Sciences at Nanoscale
2020
Harbin Institute of Technology
2020
Ministry of Industry and Information Technology
2020
Army Medical University
2020
Xinqiao Hospital
2020
University of Science and Technology of China
2020
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...
This study investigates the ultrafast fragmentation of ammonia clusters, ${({\mathrm{NH}}_{3})}_{n}$ ($n=2$, 3, and 4), by using ion-ion multibody coincidence measurements after interaction with a strong femtosecond laser. Specifically, Coulomb explosion proton transfer channels in dimer, as well tri- tetramers, are assigned. The kinetic energy release distributions Newton plots each channel extracted analyzed. To gain further insights into dissociation process, an ab initio molecular...
As the climate changed in recent years, an increase summer indoor temperatures severe cold and regions of China has started to affect thermal comfort. However, local design standard for energy efficiency does not recognize this phenomenon. This paper reports potential overheating phenomenon residential buildings examines rationale current designs adopted China. In study, two most commonly used building materials, reinforced concrete (RC) cross laminated timber (CLT), are separately 18-story...
We studied the ultrafast nuclear dynamics during dissociation of ${\mathrm{OCS}}^{+}$ molecules using a strong IR-laser pump and probe technique in combination with coincidence measurement. The movement is tracked by analyzing time-dependent kinetic energy release (KER) spectra. involved states pathways are assigned help semiclassical Landau-Zener surface hopping calculations. real-time bond-breaking ${3}^{2}\phantom{\rule{0.16em}{0ex}}A{}^{\ensuremath{'}}$ coupling to other observed for...
A four-body coincident measurement of carbonyl sulfide dimers is conducted using a femtosecond laser-induced Coulomb explosion. Sequential and concerted processes that occur during the explosion are distinguished. Four isomers dimer resolved, their structures retrieved from measured momenta fragment ions generated in process, with help classical trajectory simulation. As result our study, we can resolve weakly bound molecular cluster determine stereo configuration by There also potential...
Taking an image of their structure and a movie dynamics small quantum systems have always been dream physicists chemists. Laser-induced Coulomb explosion imaging (CEI) provides great opportunity to make this reality for molecules or aggregation — clusters. The method is unique identifying the atomic locations with ångstrom spatial resolution capturing structural evolution femtosecond time scale, in particular transient state products. This review summarizes determination three-dimensional...
We study ionization dynamics of aligned diatomic molecules N$_2$ in strong elliptical laser fields experimentally and theoretically. The alignment dependence photoelectron momentum distributions (PMDs) measured experiments is highlighted with comparing to Ar synchronously. Our results show that the PMDs depend strongly on molecule, relative main axis ellipse. In particular, most-probable electron-emission angle which often used attosecond measurement, differs remarkably when changing...
We have observed the laser-assisted dynamic interference in electron spectra triggered by attosecond pulse trains. The fingerprints of finer fringes, much smaller than laser photon energy, been clearly identified experimentally. Our measurements are successfully reproduced theoretical simulations utilizing numerical solution to time-dependent Schr\"odinger equation and strong-field approximation. Further explorations based on saddle point analysis a simple quantum model strengthen our...
We study the ultrafast dissociation of singly and doubly ionized ${\mathrm{N}}_{2}\mathrm{O}$ molecules using strong IR-laser pump probe techniques in combination with three-body $({\mathrm{N}}^{+}+{\mathrm{N}}^{+}+{\mathrm{O}}^{+})$ coincidence measurement. Two time-dependent kinetic energy release bands are observed assigned as evolutions after further ionization ${\mathrm{N}}_{2}{\mathrm{O}}^{+}$ ${\mathrm{N}}_{2}{\mathrm{O}}^{2+}$. The real-time bond stretching structure bending from...
The discontinuous crack surface in a rock affects the stability of whole system. experiments this paper were carried out by prefabricating rock-like specimens with different types flaws, then tested under uniaxial compression. Moreover, based on theory particle flow, PFC 2D software was used for numerical simulation, and comparative analysis experimental simulative results to obtain initiation sequence, propagation phenomenon, failure mode flaw types. indicated that wing started at tip form...
The ring-breaking dynamics of ${\mathrm{C}}_{6}{\mathrm{H}}_{6}$ in its three dimers $[{({\mathrm{C}}_{6}{\mathrm{H}}_{6})}_{2},$ ${\mathrm{C}}_{6}{\mathrm{H}}_{6}\mathrm{Ar},$ and ${\mathrm{C}}_{6}{\mathrm{H}}_{6}\mathrm{Kr}]$ are investigated by performing three-body coincidence measurements after interaction with a strong femtosecond laser. enabled the observation channels, resulting products ${\mathrm{C}}_{1}{\mathrm{H}}_{3}^{+}+{\mathrm{C}}_{5}{\mathrm{H}}_{3}^{+},$...
Transverse momentum resolved angular streaking unveils the electron wave packet tunneling through a laser-coupled Coulomb potential, emphasizing impact of initial transverse on subsequent dynamics. Through experimental measurements photoelectron distributions in comparison with theoretical calculations, can be extracted directly using proposed formula.
Imaging the charge distributions and structures of molecules clusters will promote understanding dynamics quantum system. Here, we report a method by using an Ar atom as tip to probe benzene (Bz) cations in gas phase. Remarkably, measured Bz + ( δ H = 0.204, C −0.037) 2+ 0.248, 0.0853) agree well with calculated Mulliken distributions, 2 is reconstructed distributions. The two isomers (T-shaped PD isomers) can be resolved from inter-molecular potential V R ) between ions, dimer theoretical...
Abstract The study of molecular valence electron dynamics and their coupling with nuclear motion is one the frontiers ultrafast physics chemistry. With time-resolved strong-field ion momentum spectroscopy, we nucleus wavepacket evolution on a femtosecond timescale. Two orientation-dependent bond-breaks N 2 O molecules from same electronic state are studied, influence orbital hybridization polarization effect during breaking analyzed based measured asymmetric Pzsum distributions, allowing...
Synopsis We report the investigation on three-body fragmentation of CF 4 3+ induced by 1 keV electron collision utilizing an ion momentum spectrometer. With help coincidence measurement for three fragment ions, channel →F + +CF2++F+ is identified. By employing Dalitz plot and Newton diagram, a sequential path-way concerted pathway are uncovered, which further separated correlation two F ions. find that prefers +CF 3 2+ 2 .
Abstract The study of the dynamics molecular valence electrons and their coupling with nucleus motion is a frontier in ultrafast physics chemistry. Here, we investigate behavior wavepackets on femtosecond time scale by time-resolved strong-field ion momentum spectroscopy. Two orientation-dependent bond-breakages N2O molecules from same electronic state are studied, evolution dipole moment during breaking asymmetric Pzsum distribution analyzed, thus electron localization dissociating into...
At the beginning of this article reviewed related literature about cloud computing technology, and then use PEST method, from political, economic, social, four aspects, comparing similarities differences between two countries in field computing, starting trend investment at present future market development to make analysis, summed up experience Suggest feasible solutions problems China's industry. Then, through analysis background Guizhou, Oracle TikTok, paper points out common security...