Results 261 to 270 of about 23,557 (298)
Spectroscopic Studies of Impurity Densities and Impurity Transport
, 1994 Spectroscopic studies of impurity densities and impurity transport. - In: Plasma diagnostics for tokamaks and stellarators / Stott, P. E. ... (eds.). - Madrid : Ciemat, 1994. - S.
Behringer, Kurt, Behringer, K.
openaire +3 more sources
Some of the next articles are maybe not open access.
Related searches:
Related searches:
AIP Conference Proceedings, 2008
Impurity transport is an important topic for ITER as impurity density in the core has to stay below a relative concentration of 5×10−5 [1] to reach ignition conditions. The reasons for that is mainly impurity radiation leading to cooling. In the edge region on the other hand site, higher impurity densities, going along with radiation energy losses are ...
Volker Naulin +7 more
openaire +1 more source
Impurity transport is an important topic for ITER as impurity density in the core has to stay below a relative concentration of 5×10−5 [1] to reach ignition conditions. The reasons for that is mainly impurity radiation leading to cooling. In the edge region on the other hand site, higher impurity densities, going along with radiation energy losses are ...
Volker Naulin +7 more
openaire +1 more source
Impurity effects on drift wave stability and impurity transport
Nuclear Fusion, 1993A numerical linear stability analysis of electrostatic ion temperature gradient (ITG) and dissipative trapped electron (DTE) modes in a three-component plasma (electrons, primary ions and impurity ions) is performed using a fully kinetic, sheared slab model. The quasi-linear particle and energy fluxes for each species are also computed.
R.R Dominguez, G.M Staebler
openaire +1 more source
Impurities and impurity transport in the spheromak SPHEX
Plasma Physics and Controlled Fusion, 1997Absolute spectroscopic measurements are made of all significant ionization states of the dominant impurities in SPHEX during sustained operation, and these are compared with a diffusive transport model to derive average plasma parameters. Statistical tests are used to establish the reliability of these results.
openaire +1 more source
Impurity transport and density in TdeV
Plasma Physics and Controlled Fusion, 1992The authors study the modelling of light impurity transport in TdeV (Tokamak de Varennes) Ohmic discharges with graphite poloidal limiters. The impurity fraction, the diffusivity and the convective velocity were determined by comparison of measured C IV, O VII and Ne IX line intensities (VUV spectroscopy) with MIST simulated profiles.
E Haddad +3 more
openaire +2 more sources
Impurity transport in percolation media
Journal of Experimental and Theoretical Physics Letters, 2004An equation describing the impurity transport in a percolation medium is obtained and the inferences drawn from this equation are analyzed based on the scale invariance concept. A determining part in this analysis is allowance for the sinks inherent in such media.
A. M. Dykhne +2 more
openaire +1 more source
Measurements of impurity transport in jet
Plasma Physics and Controlled Fusion, 1992Impurity transport has been studied in JET using the laser blow-off technique. Results are presented for Ohmic, L-mode and H-mode plasmas. In all cases impurity transport was found to be small inside r/a approximately 0.3 with values for D approximately 0.03-0.3 m2 s-1 close to neoclassical predictions.
D Pasini +7 more
openaire +2 more sources
Theory of transport by impurities
Soviet Physics Journal, 1969The method of the B(t) field is used to analyze conductivity by means of impurities. The case of nonmetallic conductivity with a low degree of compensation is discussed. It is shown that the activation energy in the representation of the B(t) field is equal to the binding energy in the “trap.” The anomalous dependence on the degree of compensation is ...
openaire +1 more source
Impurity transport in detached plasmas
Plasma Physics and Controlled Fusion, 1989Transport of metallic impurities in the plasma edge was compared for normal and detached Tokamak plasmas. A neo-classical model, valid for a dirty plasma in the Pfirsch-Schluter regime, was used to calculate the impurity flux terms. Changes in the edge density and temperature profiles, characteristic of detached discharges, were seen to greatly ...
Y Demers, J Castracane
openaire +1 more source
Deterministic Ratchet Transport of Impurities in Fluids
International Journal of Bifurcation and ChaosThis paper investigates unbiased directed transport, known as the ratchet effect, within a system coupled to a fluid modeled by the bailout embedding technique. The system dynamics under the fluid influence are described by a four-dimensional mapping governed by parameters such as dissipation ([Formula: see text]), ratchet kicking (K), and the ...
Tulio M. de Oliveira +2 more
openaire +1 more source