On the mechanisms governing gas penetration into a tokamak plasma during a massive gas injection

A new 1D radial fluid code, IMAGINE, is used to simulate the penetration of gas into a tokamak plasma during a massive gas injection (MGI). The main result is that the gas is in general strongly braked as it reaches the plasma, due to mechanisms related to charge exchange and (to a smaller extent) recombination. As a result, only a fraction of the gas penetrates into the plasma. Also, a shock wave is created in the gas which propagates away from the plasma, braking and compressing the incoming gas. Simulation results are quantitatively consistent, at least in terms of orders of magnitude, with experimental data for a D 2 MGI into a JET Ohmic plasma. Simulations of MGI into the background plasma surrounding a runaway electron beam show that if the background electron density is too high, the gas may not penetrate, suggesting a possible explanation for the recent results of Reux et al in JET (2015 Nucl. Fusion 55 093013)

The moderating effects of gratitude on the association between perceived parenting styles and suicidal ideation

202208 bcchSelf-funde

Corrigendum: A multidimensional PERMA-H positive education model, general satisfaction of school life, and character strengths use in Hong Kong senior primary school students : confirmatory factor analysis and path analysis using the APASO-II [Front. Psychol., 9, 1090, (2018)] doi: 10.3389/fpsyg.2018.01090

201902 bcmaVersion of RecordPublishe

A multidimensional PERMA-H positive education model, general satisfaction of school life, and character strengths use in Hong Kong senior primary school students : confirmatory factor analysis and path analysis using the APASO-II

2017-2018 > Academic research: refereed > Publication in refereed journal201810 bcrcVersion of RecordPublishe

pH-responsive targeted gold nanoparticles for in vivo photoacoustic imaging of tumor microenvironments

201909 bcrcVersion of RecordPublishe

Effects of a mindful parenting workshop for parents of adolescents and young adults following social unrest in Hong Kong

202208 bcchOthersPublic Policy Research Scheme (Special Round)12 month