82 research outputs found
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)
Prostatos magnetinio rezonanso tomografijos tyrimo indikacijų ir atlikimo metodikų analizė Vilniaus universiteto ligoninės Santariškių klinikose 2006–2014 metais
A biogeographic comparison of sponge fauna from Gray’s Reef National Marine Sanctuary and other hard-bottom reefs of coastal Georgia, U.S.A.
Merging Microarray Data, Robust Feature Selection, and Predicting Prognosis in Prostate Cancer
A biogeographic comparison of sponge fauna from Gray’s Reef National Marine Sanctuary and other hard-bottom reefs of coastal Georgia, U.S.A.
The transition from invasive species control to native species promotion and its dependence on seed density thresholds
High-Throughput Prostate Cancer Gland Detection, Segmentation, and Classification from Digitized Needle Core Biopsies
- …