Results 21 to 30 of about 2,920 (167)
Optimization of flux-surface density variation in stellarator plasmas with respect to the transport of collisional impurities [PDF]
, 2019 Avoiding impurity accumulation is a requirement for steady-state stellarator operation. The accumulation of impurities can be heavily affected by variations in their density on the flux-surface.
Buller, Stefan +4 more
core +2 more sources
Symposium - International Astronomical Union, 1983 Three topics of current interest are treated in this review:a)The success and shortcomings of dynamo models for the solar cycle are explained, and oscillator models discussed briefly.b)The intermittent (flux tube) nature of magnetic fields in convection zones leads to new conjectures about stellar dynamos.
openaire +1 more source
Commission 36: Theory of Stellar Atmospheres [PDF]
Proceedings of the International Astronomical Union, 2005 Commission 36 covers all the physics of stellar atmospheres. The scientific activity in this large field has been very intense during the last triennium and led to the publication of a large number of papers which makes an exhaustive report practically not feasible. As a consequence we decided to keep the format of the preceding report: first a list of
Monique Spite +11 more
openaire +2 more sources
Properties of a new quasi-axisymmetric configuration [PDF]
, 2018 A novel, compact, quasi-axisymmetric configuration is presented which exhibits low fast-particle losses and is stable to ideal MHD instabilities. The design has fast-particle loss rates below 8\% for flux surfaces within the half-radius, and is shown to ...
Beidler, C. D. +6 more
core +2 more sources
Collisionless microinstabilities in stellarators II - numerical simulations [PDF]
, 2013 Microinstabilities exhibit a rich variety of behavior in stellarators due to the many degrees of freedom in the magnetic geometry. It has recently been found that certain stellarators (quasi-isodynamic ones with maximum-$J$ geometry) are partly resilient
Helander, P. +2 more
core +1 more source
, 1991 This report discusses particle modeling of stellarator divertors. (LSP).
openaire +2 more sources
An Enhanced Evaluation Method of Sequential Probability Ratio Test
Mathematical Problems in Engineering, Volume 2019, Issue 1, 2019., 2019 Accurate event detection has high priority in many technical applications. Events in acquired data series, their duration, and statistical parameters provide useful information about the observed system and about its current state. This information can be used for condition monitoring, state identification, and many kinds of forecasting as well.
Gabor Gardonyi +3 more
wiley +1 more source
Design of transverse magnetic field sweeping solenoids for 140 GHz mega‐watt gyrotrons
The Journal of Engineering, Volume 2018, Issue 14, Page 682-685, 2018., 2018 As the overlarge power density at the collector of mega‐watt (MW) gyrotrons limits the increase in their average output power and pulse width, transverse magnetic field sweeping solenoids (TMFSS) with periodical changing magnetic field have been designed for a 140 GHz MW gyrotron developed and tested at Beijing Vacuum Electronics Research Institute ...
Xu Zeng, Bentian Liu, Jinjun Feng
wiley +1 more source
Impurity transport and bulk ion flow in a mixed collisionality stellarator plasma
, 2017 The accumulation of impurities in the core of magnetically confined plasmas, resulting from standard collisional transport mechanisms, is a known threat to their performance as fusion energy sources.
Helander, Per +3 more
core +1 more source
Review on Recent Developments in Laser Driven Inertial Fusion
Science and Technology of Nuclear Installations, Volume 2014, Issue 1, 2014., 2014 Discovery of the laser in 1960 hopes were based on using its very high energy concentration within very short pulses of time and very small volumes for energy generation from nuclear fusion as “Inertial Fusion Energy” (IFE), parallel to the efforts to produce energy from “Magnetic Confinement Fusion” (MCF), by burning deuterium‐tritium (DT) in high ...
M. Ghoranneviss +2 more
wiley +1 more source