A5052257163- Nuclear physics research studies
- Astronomical and nuclear sciences
- Asthma and respiratory diseases
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Allergic Rhinitis and Sensitization
- Nuclear reactor physics and engineering
- Atomic and Molecular Physics
- Evolution and Genetic Dynamics
- Gene Regulatory Network Analysis
- Statistical Mechanics and Entropy
- Dermatology and Skin Diseases
- Pediatric health and respiratory diseases
- Spine and Intervertebral Disc Pathology
- Magnetism in coordination complexes
- Sinusitis and nasal conditions
- Cold Fusion and Nuclear Reactions
- Electron Spin Resonance Studies
- Spinal Fractures and Fixation Techniques
- Lanthanide and Transition Metal Complexes
- Medical Imaging and Analysis
- Bioinformatics and Genomic Networks
- Radioactive element chemistry and processing
- Nuclear Materials and Properties
- Nonlinear Dynamics and Pattern Formation
Beijing Tongren Hospital
2022-2024
Capital Medical University
2014-2024
Leshan Normal University
2018-2022
Massachusetts Institute of Technology
2017
Beijing Normal University
2009-2012
Beijing Radiation Center
2009
Zero-field splitting (ZFS) parameters are fundamentally tied to the geometries of metal ion complexes. Despite their critical importance for understanding magnetism and spectroscopy complexes, they not routinely available through general laboratory-based techniques, often inferred from data. Here we demonstrate a simple tabletop experimental approach that enables direct reliable determination ZFS in terahertz (THz) regime. We report time-domain measurements electron paramagnetic resonance...
The mechanism of the ternary breakup very heavy system $^{197}\mathrm{Au}+^{197}\mathrm{Au}$ at an energy $15A$ MeV has been studied by using improved quantum molecular dynamics model. calculation results reproduce characteristic features in events explored a series experiments; i.e., masses three fragments are comparable size and fast, nearly collinear colliding is dominant events. Further, evolution time scales different reaction modes behavior mass distributions with impact parameters...
the collision of very heavy nuclei 197Au+197Au at 15 A MeV has been studied within improved quantum molecular dynamics model. class ternary events satisfying nearly complete balance mass numbers is selected. The experimental distributions for system fission fragments, heaviest (A1), intermediate (A2) and lightest (A3), are reproduced well. mean free path nucleons in reaction shorter responsible with three comparable which two-body dissipation mechanism plays a dominant role.
Angular distributions of fragments have been studied for 197 Au + ternary reactions at bombarding energy 15 A MeV by an improved quantum molecular dynamics model. The calculated results are qualitatively in agreement with the experimental data. Through analyzing angular fragments, it is shown that semi-peripheral collisions interacting system often reseparates into three massive which almost aligned space along separation axis. anisotropic distribution azimuthal angle ϕ shows projectile-like...
Ternary fission in 197Au+197Au collisions at 15 A MeV is investigated by using the improved quantum molecular dynamical (ImQMD) model. The experimental mass distributions for each of three fragments are reproduced first time without any freely adjusting parameters. mechanisms ternary central and semi-central dynamically studied. In direct prolate fission, two necks found to be formed almost simultaneously rupture sequentially a very short interval. Direct oblate rare event, which...
Collisions of very heavy nuclei 197 Au + at the energy 15A MeV has been studied with improved quantum molecular dynamics model. The experimental mass distributions ternary fission fragments for system are reproduced well. direct and sequential modes by time dependent snapshots typical events. analysis deviation from Viola systematics indicates nonstatistical feature in these reactions.
Chronic rhinosinusitis with nasal polyps (CRSwNP) remains a common and challenging clinical entity, its economic burden has not been well described in China thus far.A total of 101 CRSwNP patients who underwent endoscopic sinus surgery were included to investigate direct costs the first year post-surgery. Costs for outpatient visits, medication use, examination obtained from Hospital Information System, differences compared between subgroups. Multiple linear regression analysis was adopted...
The mass number distributions of three fragments from the ternary fission system 197Au+197Au are reproduced rather well by using improved quantum molecular dynamics (ImQMD) model without any adjusting parameter. It is found that probability evidently depends on incident energy and impact parameter, two-body dissipation main mechanism responsible for formation third fragment with comparable mass.
The dynamical properties of the new ternary fission in heavy 197Au+197Au at 15 MeV/nucleon have been investigated by using improved quantum molecular dynamics model. dependencies production probability, lifetime, time interval, and angular distribution on impact parameter are carefully studied. calculation results show that characteristics these very different between small large parameter. Comparing theoretical with experimental data, one can obtain fast breakup likely occurs region <math...
Considering the boundary effect, we adopt Tsallis entropy and compute time evolution of in low energy reaction system for first time, dealing with initial, compression, expansion fission stages a consistent method. We find that it rises up compression period reduces slightly after separation, because exchange between collective motion internal excitation. The research shows curves binary, sequential or direct ternary fissions are distinct, which declares may be novel criterion to study...
The characteristics of fragments produced in the ternary fissions have been researched by using improved quantum molecular dynamics model heavy 197Au+197Au at 15 MeV/nucleon. physical quantities Z, n/z, θ, ptrans/plong about nuclear strong dependencies on impact parameters, and their curves are systematically drawn. By study these theoretical results above, we concluded that there is a cut-off point b =6 fm, which divides parameters into two regions: central or semi-peripheral peripheral...
Collisions of very heavy nuclei 197Au+197Au at the energy range 5–30 A MeV have been studied within improved quantum molecular dynamics (ImQMD) model. class ternary events satisfying a nearly complete balance mass numbers is selected and we find that probability breakup depends on incident impact parameter. It also found largest located around 24 for system 197Au+197Au. The experimental distributions angular fragments can be reproduced well by calculation with ImQMD model 15 MeV. modes...