News & Activities Reports

News Mar. 25, 2024

Ding Prize

Professor Yi Ming of Anhui University, Dr. Zeng of the Chinese Academy of Engineering Physics, Dr. Zhu Ruan, and Dr. Long Cheng were awarded for their significant contributions to the advancement of their respective fields. They were recognized for their outstanding contributions to the development and application of the Quantum Trajectory Monte Carlo (QTMC) method. This innovative computational technique, which marries the principles of quantum mechanics with the stochastic approach of Monte Carlo simulations, has significantly advanced our understanding of electron behavior at atomic scales, particularly in the context of secondary electron generation and imaging.

News Mar. 24, 2024

MCMS Joint Symposium 2024

The Joint Symposium on Computational Material Sciences and Monte Carlo Methods 2024 was successfully held on March 24-25, 2024 at the University of Science and Technology of China University of Science and Technology of China (USTC) and the National Institute for Materials Research (NIMR), Japan.

News Dec. 2, 2022

Shimizu Prize 2022 Winner

Dr. Huimin Li has extended the Monte Carlo algorithm-based electron-material interaction model to complex geometries, making electron scattering simulations truly practical during his graduate course at the Laboratory for Microstructure of Solids, University of Science and Technology of China. His work on scanning electron microscopic imaging structural solids was one of the most important cornerstones for the development of the international standard “Microbeam analysis - Scanning electron microscopy - Method for evaluating critical dimensions by CD-SEM” (ISO 21466).

News Dec. 2, 2022

STAM Young Scientist Award

Xun Liu from the National Institute for Materials Science (NIMS), Japan, Qirong Zheng from the Institute of Solid State Physics, Chinese Academy of Sciences (HFIPS), and Jiamin Gong from the University of Science and Technology of China (USTC) were honored with STAM Young Scientist Awards.

Journal

JCMC-Vol2-No2
Monte Carlo Methods in Electron Spectroscopy Analysis and Monte Carlo Methods in Computational Materials Science
paper
The Quantum Trajectory Monte Carlo (QTMC) method is an innovative computational technique that combines the principles of quantum mechanics, specifically through Bohmian mechanics for the trajectory analysis of particles, with the stochastic nature of Monte Carlo simulations. This synthesis allows for a nuanced exploration of electron behavior at atomic scales, particularly in the context of secondary electron generation and imaging.
paper
In the future fusion reactor, tungsten (W) is considered as the preferred candidate of the plasma-facing material, due to its high conductivity, low sputtering yield as well as the low tritium retention. However, due to the high atomic number, the W could lead to significant radiation inside the core plasma, which means the concentration of W impurity in the core plasma has to be lower than ~10-5 [1]. In the present tokamak device, the divertor configuration is generally adopted, where the plasma leaving the confined region will flow towards the divertor targets in the so-called scrape-off layer (SOL) along the open magnetic field line. As a result, the region having intensive plasma-surface interaction can be placed in a certain distance from the confined region, which implies the contamination of the core plasma with the impurity sputtered from the plasma-facing surface is reduced. In the divertor configuration, the W sputtered from the divertor target will be ionized in the divertor region, then transport along the SOL and reach the core plasma by cross-field transport from the main SOL around the confined region. Considering the extreme low limit on the W concentration inside the core plasma, it is of great importance to understand the transport of W impurity in the SOL.
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