[en] On the basis of the exact numerical solution of the Euler--Lagrange equations arising in the method of the energy-density functional we analyze the theorem on contact forces within the framework of the sudden approximation. The proximity function obtained is in agreement with the results of calculations of other authors and can be used for the construction of the ion--ion potential

No abstract available

[en] By appeal to a Thomson-style treatment of recombination, it is shown that the rate for recombination of ions generated with uniform frequency within a reaction volume is a factor of 9/4 times greater than the rate for recombination of ions which approach each other from infinite separation. A valuable relationship connecting the two problems is uncovered. The analysis is pertinent to recombination involving dilute and high degrees of ionisation. (author)

[en] The process of the two-electron resonant charge exchange in slow ion-ion collisions is considered in the framewrk of the asymptotic aprroach with account of the deviations of colliding particle trajectories from rectilinear motion. A quasi-classical approximation that holds for smaller intranuclear distances and provides for more accurate result, as compared to the ordinary asymptotic method, has been used to calculate the potential of the two-electron charge-exchange interaction. The results obtained are compared with calculations of other authors

[en] Brief descriptions of work are given for each of the following topics: (1) identification of atomic spectral lines, (2) atomic energy level compilations, (3) transition rate measurements with the theta pinch and TEXT experiments, (4) dielectronic recombination rates, (5) electron-ion collision experiments, (6) electron impact excitation theory, and (7) for uv radiometric standards

[en] Results from 3D global gyrokinetic particle simulations of ion temperature gradient driven microturbulence in a toroidal plasma show that the ion thermal transport level in the interior region exhibits significant dependence on the ion-ion collision frequency even in regimes where the instabilities are collisionless. This is identified as arising from the Coulomb collisional damping of turbulence-generated zonal flows

No abstract available

[en] A facility to study collisions between two multiply charged ions is under construction at the Macdonald Lab. Ions from the KSU CRYEBIS will be collided with ions from a 5 GHz ECR ion source. The two ion beams will intersect at 90 degrees. The ECR beam will be decelerated to a few hundred eV per charge in order to enhance the effective target density. Ion-optics simulations including space charge effects indicate that it is possible to decelerate the slow, intense ECR beam and maintain both a reasonable focus at the collision region and 100% transmission of the collision products. The ECR ion source has been installed and is undergoing developmental testing. The vacuum system at the collision region is complete and the deceleration columns are being fabricated. Initial ion-ion collision tests should begin in the next few months

[en] Techniques to efficiently implement the random particle method for numerical solution of the kinetic Vlasov-Poisson-Fokker-Planck (VPFP) equations are computationally investigated. As relatively few particles (1000 to 10,000) provide accurate results, and the number of computations can proportional to the number of particles, it is concluded that the random particle method is a viable method for numerically solving the VPFP equations

No abstract available