A5112235617- Atomic and Molecular Physics
- Particle accelerators and beam dynamics
- Mass Spectrometry Techniques and Applications
- Laser-induced spectroscopy and plasma
- Advanced Chemical Physics Studies
- Magnetic confinement fusion research
- Nuclear physics research studies
- Particle Accelerators and Free-Electron Lasers
- Superconducting Materials and Applications
- X-ray Spectroscopy and Fluorescence Analysis
- Ion-surface interactions and analysis
- Plasma Diagnostics and Applications
- Nuclear Physics and Applications
- Muon and positron interactions and applications
- Quantum, superfluid, helium dynamics
- Fullerene Chemistry and Applications
- Diamond and Carbon-based Materials Research
- Aeolian processes and effects
- Catalytic Processes in Materials Science
- Electron and X-Ray Spectroscopy Techniques
- Quantum Chromodynamics and Particle Interactions
- Soil erosion and sediment transport
- Laser-Plasma Interactions and Diagnostics
- Atomic and Subatomic Physics Research
- Dark Matter and Cosmic Phenomena
Chiba University
2025
Chinese Academy of Sciences
2014-2024
Shanghai Institute of Optics and Fine Mechanics
2024
Institute of Modern Physics
2013-2023
University of Chinese Academy of Sciences
2020-2023
University of Science and Technology of China
2020
Tufts University
2020
Huizhou University
2018-2020
Xi'an Jiaotong University
2017
Nanjing University of Science and Technology
2016
Two physical methods (centrifugation and ultrasonication) 3 chemical (extraction with EDTA, extraction formaldehyde, formaldehyde plus NaOH) for of EPS from alga-bacteria biofilm were assessed. Pretreatment ultrasound at low intensity doubled the yield without significant modification composition EPS. Extraction EDTA or NaOH increased by about 1 order magnitude compared other methods. However, protein polysaccharide content in prepared low. fluorescence peaks belonging to protein-like 2...
FMD poses a significant threat to animal husbandry and public health security. This study aims investigate an innovative method for producing vaccines. Wild-type BHK-21 cells were subjected heavy ion irradiation. Following the optimization of irradiation parameters, mutant cell line BHK-7 was selected using limited dilution method. The concentration FMDV 146S in markedly elevated, significantly enhancing replication. suspension culture domestication experiments demonstrated that exhibited...
With the recent implementation of a radio-frequency quadrupole cooler-buncher and multi-step laser ionization technique, our previous developed collinear spectroscopy has been successful upgraded to fully functional resonance system. The new system was characterized using bunched ion beam at 30 keV energy, where hyperfine structure spectra $^{85,87}$Rb isotopes were measured. An overall efficiency exceeding 1:200 achieved while maintaining spectral resolution 100 MHz. Under these conditions,...
Electron–ion recombination of Be-like 40Ar14+ has been measured by employing the electron–ion merged-beams method at cooler storage ring CSRm. The absolute rate coefficients for collision energies from 0 to 60 eV are presented, covering all dielectronic (DR) resonances associated with 2s2 → 2s2p core transitions. In addition, strong trielectronic (TR) 2p2 transitions were observed. Both DR and TR processes lead series peaks in spectrum, which have identified Rydberg formula. Theoretical...
The Heavy Ion Research Facility in Lanzhou (HIRFL) is a multi-disciplinary research facility that provides heavy ion beams for physical, biomedical and material sciences. It major academic of China one the world's important centers nuclear physics accelerators. was built step by at Institute Modern Physics (IMP) over half century. first cyclotron with great assistance from former Soviet Union 1960s, newest linear accelerator tested successfully 2019. HIRFL can provide proton to Uranium...
Breakup dynamics of ${\mathrm{C}}_{2}\mathrm{H}{{}_{2}}^{3+}$ $\ensuremath{\rightarrow}$ ${\mathrm{H}}^{+}+{\mathrm{H}}^{+}+\mathrm{C}{{}_{2}}^{+}$ induced by 50-keV/u ${\mathrm{Ne}}^{8+}$ ion impact is investigated employing a reaction microscope. All three ionic fragments in the final state are detected coincidence, and their momentum vectors as well kinetic energies determined. The kinetic-energy correlation spectrum two protons displays very rich structures. Utilizing Newton diagrams...
A new project, high intensity heavy ion accelerator facility (HIAF), is currently under design and construction in China. The HIAF front end, composed of electron cyclotron resonance (ECR) sources, low energy beam transport (LEBT) radio frequency quadrupole (RFQ), will produce provide beams ions with a mass up to uranium at $0.5\text{ }\text{ }\mathrm{MeV}/\mathrm{u}$. typical designed 2 emA for the charge state $35+$. This paper presents an overall end discusses several key issues design....
Single ionization of the methane (CH4) 1t2 orbital by 54 eV electron impact has been studied experimentally and theoretically. The measured triple differential cross sections cover nearly a 4π solid angle for emission low energy electrons range projectile scattering angles. Experimental data are compared with theoretical calculations from distorted wave Born approximation molecular three-body models. It is found that theory can give proper description main features experimental section only...
Abstract Dielectronic recombination (DR) rate coefficients for carbon-like 40 Ca 14+ forming nitrogen-like 13+ have been measured using the electron–ion merged-beam technique at heavy-ion storage ring CSRm Institute of Modern Physics in Lanzhou, China. The DR energy range from 0 to 92 eV cover most resonances associated with 2 s p → and 3 core transitions (Δ N = 0). Theoretical calculations cross sections were carried out by two different state-of-the-art atomic theoretical techniques,...
Electron-impact ionization of the 3${\mathrm{\ensuremath{\sigma}}}_{\mathit{g}}$ and 1${\mathrm{\ensuremath{\pi}}}_{\mathit{u}}$ molecular orbitals ${\mathrm{N}}_{2}$ to produce ${\mathit{X}}^{\mathrm{}2}$${\mathrm{\ensuremath{\Sigma}}}_{\mathit{g}}^{+}$ ${\mathit{A}}^{\mathrm{}2}$${\mathrm{\ensuremath{\Pi}}}_{\mathit{u}}$ states ${\mathrm{N}}_{2}^{\mathrm{}+}$ has been investigated in an asymmetric (e,2e) experiment at 100-eV maximum total cross section. The allows direct comparison two...
Evaluation of transverse impedances and collective instabilities is important for determining whether a feedback system or damping schemes should be prepared in the BRing (Booster Ring) at HIAF (High Intensity Heavy-ion Accelerator Facility). In this paper, some dominant are estimated to build impedance model BRing. With model, all potential their growth times rates analyzed by analytical methods simulations, results agree with each other. The shorter than duration corresponding...
The relative triple differential cross section for 100-eV electron-impact ionization of the three outer molecular orbitals ${\mathrm{O}}_{2}$ has been studied in an asymmetric $(e,2e)$ experiment. angular distribution low-energy ejected electrons was measured from 30\ifmmode^\circ\else\textdegree\fi{} to 125\ifmmode^\circ\else\textdegree\fi{} with respect incident beam direction electron scattering angle 4\ifmmode^\circ\else\textdegree\fi{} and ejected-electron energies 3.5, 6.0, 11.0 eV....
The direct excitation cross section for the atomic oxygen 3 P → S 0 transition (λ1304Å) has been measured at four incident energies between 13.4 and 40 eV. These measurements were made to add sufficient detail previous allow near‐threshold be determined. Previous optical of 1304Å emission disagree by up a factor 2 in this important energy region. We have also compared hydrogen e + H(1 s ) H(2 p section, used previously as secondary standard our sections, recent total H Lyman alpha found...
Abstract Heavy Ion Research Facility in Lanzhou (HIRFL) is a cyclotron, synchrotron and storage ring accelerator complex, which accelerates ions of hydrogen to uranium from low medium energy. Since the complete HIRFL-CSR project 2008, under support CAS, efforts have been put improve infrastructure for machine performance, including improvement EMC environments, power distribution stations, PS cooling water system, RF system cyclotrons adoption EPICS control etc. New generation SC ECR source...
The cross‐section for production of the N 2 + B Σ u state by electron impact on is one most important cross‐sections aeronomy because prominence first negative (0,0) band ( ← X g , λ3914 Å) in day glow and aurora. Recently developed electron‐electron coincidence experiments have made possible measurement branching ratios ionization‐excitation at 100‐eV maximum cross‐section. total ionization cross‐section, measured other experiments, can then be used to calculate 100‐eV. Photoionization...
The three electronic states of N 2 + which are important to aeronomy the X Σ g , A Π u and B states. transitions ← responsible for prominent Meinel bands first negative occur in aurora airglow. In this paper, we use new electron‐electron coincidence (e,2e) measurements extend our previous work on state cross section give a complete set branching ratios sections production given above by 100‐eV electron impact . An improved apparatus has allowed direct measurement ratio time. agree within...