A5060443181- Laser-induced spectroscopy and plasma
- Laser-Plasma Interactions and Diagnostics
- Solar and Space Plasma Dynamics
- Atomic and Molecular Physics
- High-pressure geophysics and materials
- Astro and Planetary Science
- Ionosphere and magnetosphere dynamics
- Stellar, planetary, and galactic studies
- Magnetic confinement fusion research
- Astronomy and Astrophysical Research
- X-ray Spectroscopy and Fluorescence Analysis
- Geomagnetism and Paleomagnetism Studies
- Diamond and Carbon-based Materials Research
- Planetary Science and Exploration
- Advanced X-ray Imaging Techniques
- Gamma-ray bursts and supernovae
- Astrophysics and Star Formation Studies
- Advanced Measurement and Metrology Techniques
- Laser-Matter Interactions and Applications
- Scientific Measurement and Uncertainty Evaluation
- Advanced Sensor Technologies Research
- Astronomical Observations and Instrumentation
- Astrophysics and Cosmic Phenomena
- Target Tracking and Data Fusion in Sensor Networks
- Laser Design and Applications
Sichuan University
2025
Ningbo University
2025
National Astronomical Observatories
2015-2024
Chinese Academy of Sciences
2015-2024
University of Chinese Academy of Sciences
2024
Beijing Institute of Genomics
2024
Shanghai Center For Bioinformation Technology
2024
Shanghai Jiao Tong University
2018-2022
Air Force Medical University
2021
Xijing Hospital
2020
Reconnection of the self-generated magnetic fields in laser-plasma interaction was first investigated experimentally by Nilson {\it et al.} [Phys. Rev. Lett. 97, 255001 (2006)] shining two laser pulses a distance apart on solid target layer. An elongated current sheet (CS) observed plasma between spots. In order to more closely model magnetotail reconnection, here side-by-side thin layers, instead single one, are used. It is found that at one end CS fan-like electron outflow region including...
We demonstrate a novel plasma device for magnetic reconnection, driven by Gekko XII lasers irradiating double-turn Helmholtz capacitor-coil target. Optical probing revealed an accumulated plume near the reconnection outflow. The background electron density and field were measured to be approximately 1018 cm−3 60 T using Nomarski interferometry Faraday effect, respectively. In contrast with experiments on constructed Biermann battery which produced high beta values, our value was much lower...
A simple scheme to produce strong magnetic fields due cold electron flow in an open-ended coil heated by high power laser pulses is proposed. It differs from previous generation of driven fast current a capacitor-coil target [S. Fujioka et al., Sci. Rep. 3, 1170 (2013)]. The our experiments are measured B-dot detectors and proton radiography, respectively. 205 T field at the center generated free space Iλ2 6.85 × 1014 W cm−2 μm2, where I intensity, λ wavelength. strength proportional Iλ2....
Group Re-Identification (Group ReID) aims matching groups of pedestrians across non-overlapping cameras. Unlike single-person ReID, ReID focuses more on the changes in group structure, emphasizing number members and their spatial arrangement. However, most methods rely certainty-based models, which consider only specific structures images, often failing to match unseen configurations. To this end, we propose a novel Group-CLIP UncertaintyModeling (GCUM) approach that adapts text descriptions...
With the development of aquatic products processing industry, 6-8 million tons shrimp and crab shell waste are produced globally annually, but due to lack high-value conversion technology, shells often discarded in large quantities as a by-product processing. Pseudomonas-based microbial cell factories capable biosynthesis using wide range substrates; however, there is currently no reliable fermentation model for producing chemicals by Pseudomonas strains. In this study, we first explored...
Abstract In today’s rapid development of modern information technology, the construction management system occupies an important position in safety oil and gas pipelines. The study takes third line West-East pipeline project engineering as example, explores risk factors project, constructs evaluation index system. Based on system, principal component analysis method is used to obtain comprehensive formula safety: F = 0.693 1 + 0.307 2 . Comparing control effect case with that traditional...
With the development of aquatic products processing industry, 6–8 million tons shrimp and crab shell waste are produced globally annually, but, due to lack high-value conversion technology, shells often discarded in large quantities as a by-product processing. Pseudomonas-based microbial cell factories capable biosynthesis using wide range substrates; however, there is currently no reliable fermentation model for producing chemicals by Pseudomonas strains. In this study, we first explored...
With development of Internet Things, big data and artificial intelligence, cell phone signaling data, point-of-interest machine learning methods have been widely used in research various fields transportation. The use processing techniques to mine intercity travel collected by types traffic detectors provides a new way thinking study mode selection behavior. In this paper, we pre-processed geospatial interest point around three aspects: personal attributes, attributes designed target group...
ABSTRACT Laboratory experiments have been carried out to model the magnetic reconnection process in a solar flare with powerful lasers. Relativistic electrons energy up megaelectronvolts are detected along separatrices bounding outflow, which exhibit kappa-like distribution an effective temperature of ∼10 9 K. The acceleration non-thermal is found be more efficient case guide field (a component reconnection-induced electric field) than without field. Hardening spectrum at energies ≥500 keV...
Studies of short-pulse laser-generated hard x-ray (18–60 keV) sources, suitable for radiographs large samples dense matter, are presented. The spatial and dynamic resolutions different target types laser parameters have been investigated. A high quality radiograph with good resolution in two dimensions was demonstrated by irradiating freestanding thin W wires. influence the geometry radiograph, which is crucial design experiments probing laser-compressed reported.
Developing miniaturized and rapid protein analytical platforms is urgently needed for on-site analysis, which important disease diagnosis monitoring. Liquid marbles (LMs), a kind of particle-coated droplets, as ideal microreactors have been used in various fields. However, their application limited due to the difficulty pretreating complex samples simple LMs. Herein, inspired by microfluidic chip, we propose strategy through fabricating fluid channels using deformable LM, termed liquid...
We present the application of short-pulse laser-driven hard x rays $(>40\text{ }\text{keV})$ for direct density measurement iron compressed by a shock. By using an on-shot calibration spectral absorption, we are able to obtain line densities with 5%--10% precision, although x-ray source is not monochromatic. also discuss possibilities increasing which would be improvement equation state measurements.
As a promising new way to generate controllable strong magnetic field, laser-driven coils have attracted interest in many research fields. In 2013, kilotesla level field was achieved at the Gekko XII laser facility with capacitor–coil target. A similar approach has been adopted number of laboratories, variety targets different shapes. The peak strength varies from few tesla kilotesla, spatio-temporal ranges. differences are determined by target geometry and parameters incident laser. Here we...
ABSTRACT Charge exchange has been recognized as a primary source of soft X-ray emission in many astrophysical outflow environments, including cometary and planetary exospheres impacted by the solar wind. Some models have set up using different data collections charge-exchange cross-sections. However, multiple-electron transfer not included these models. In this paper, we model with inclusion double-electron capture (DEC), make detailed investigation process on emissions highly charged...
A pair of collisionless shocks that propagate in the opposite directions are firstly observed interactions laser-produced counter-streaming flows. The flows generated by irradiating a opposing copper foils with eight laser beams at Shenguang-II (SG-II) facility. experimental results indicate excited and electrostatic, good agreement theoretical model electrostatic shock. particle-in-cell (PIC) simulations verify strong field growing from interaction region contributes to formation. evolution...
High-power laser shots were performed on $100\text{\ensuremath{-}}\ensuremath{\mu}\text{m}$-thick iron foils, leading to shock loading pressures ranging from about 100 300 GPa. Free surface velocities measured by interferometry. Ejected fragments recovered polycarbonate shields analyzed using scanning electron microscopy. Particle-size distributions extracted backscattered electrons images. These distributions, as well the morphologies of and values tensile strength, change abruptly with...
Herbig–Haro (HH) objects associated with newly born stars are typically characterized by two high Mach number jets ejected in opposite directions. However, HH 110 appears to only have a single jet instead of two. Recently, Kajdi et al. measured the proper motions knots whole system and noted that is continuation nearby 270. It has been proved 270 collides surrounding mediums deflected 58°, reshaping itself as 110. Although scales astrophysical very different from plasmas created laboratory,...
A double-turn capacitor-coil is used to produce a magnetic field (38.5 T) and construct topology of reconnection in low-β (β < 1) plasma environment. The device constructed with two metallic U-turn coils connecting parallel disks. High energy lasers are employed ablate one disk spontaneously driving currents the coils, which produces an interactive topology. We demonstrated through experiments numerical simulations that process takes place between non-uniform fields created by state...
Abstract Soft X-ray emissions induced by solar wind ions that collide with neutral material in the system have been detected around planets, and were proposed as a remote probe for interaction Martian exosphere. A multi-fluid three-dimensional magnetohydrodynamic model is adopted to derive global distributions of particles. Spherically symmetric exospheric H, H 2 , He, O, CO density profiles sophisticated hybrid includes charge-exchange proton–neutral excitation processes are used study low...
The double-cone ignition (DCI) scheme has been proposed as one of the alternative approaches to inertial confinement fusion, based on direct-drive and fast-ignition, in order reduce requirement for driver energy. To evaluate conical implosion energetics from laser beams plasma flows, a series experiments have systematically conducted. results indicate that $89%--96%$ energy was absorbed by target, with moderate stimulated Raman scatterings. Here $2%--6%$ coupled into jets ejected cone tips,...
Abstract The origin of energetic charged particles in universe remains an unresolved issue. Astronomical observations combined with simulations have provided insights into particle acceleration mechanisms, including magnetic reconnection acceleration, shock and stochastic acceleration. Recent experiments also confirmed that electrons can be accelerated through processes such as collisionless formation. However, laboratory identifying a feasible mechanism is still challenge, particularly the...
Abstract One of the remarkable dynamic features Herbig–Haro (HH) object is its highly collimated propagation far away from accretion disk. Different factors are proposed to give us a clearly physical explanation behind these fascinating phenomena, including magnetic field, radiation cooling, surrounding medium, and so on. Laboratory astrophysics, as new complementary method studying astrophysical issues, can provide an insight into behaviors in similar controllable laboratory environment....
In this paper, the recent studies of laboratory astrophysics with strong magnetic fields in China have been reviewed. On Shenguang-II laser facility National Laboratory on High-Power Lasers and Physics, a laser-driven field up to 200 T has achieved. The experiment was performed model interaction solar wind dayside magnetosphere. Also low beta plasma reconnection (MR) studied. Theoretically, developed deal atomic structures processes field. study shock wave generation magnetized...