Collisional recombination coefficient in an ultracold plasma: Calculation by the molecular dynamics method

On distribution function of free and bound electrons in equilibrium Coulomb system

“…It can be seen that the measured average interaction energy of a free electron with the entire system turns out to be close to the interaction energy of particles at an average distance, but slightly exceeds the latter. The relaxation of model Coulomb systems is studied by the molecular dynamics method in papers [7][8][9] and the recombination coefficient in a nonideal plasma is calculated. The flux in the energy space is calculated in [7], and in [8] the increase of the number of bound states is analyzed, which are determined by the number of revolutions of the electron around the ion.…”

“…In the present work, the choice of potential parameters: σ and ε=e2/σ -the depth of the potential well was carried out in such a way as to realize the required values of the nonideality parameter Γ and the degree of ionization α (σ = 2 Å). The latter was estimated by the classical Saha formula with the potential 12-1 (7).…”

“…The papers [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] is devoted to the study of the non-Maxwell configuration effect, in which the molecular dynamics method considered the relaxation of the Coulomb system, which allows the formation of bound states, to equilibrium. A similar, but pure quantum effect was considered in (see [5] and references therein), where the non-Maxwell effect was discovered by quantum statistics methods due to quantum broadening.…”

Magneto-Optical Trap for Preparation and Study of Rydberg Matter

“…The first experiments with ultracold plasma [4][5][6] demonstrated an indication of the re-duction of recombination in such systems. Our theoretical works show the appearance of short and long-range order [7] and a large reduction of the recombination rate (a few orders of magnitude) in the ultra-cold mixture of Rydberg atoms and plasma in the presence of a strong magnetic field [8][9][10][11]. The ability to control the decay and crystallization processes in an ensemble of Rydberg atoms could find an application in quantum storage and quantum computers.…”

Preparation of a high concentration of lithium-7 atoms in a magneto-optical trap

“…At that time, calcu lations of the parameters of strongly nonideal plasma, in which the potential energy of charged particles is comparable to their kinetic energy, were not available. Our theoretical investigations based on numerical simulations using Monte Carlo and molecular dynam ics methods predicted the appearance of both short and long range order [8], as well as a significant (by several orders in magnitude) decrease in the recombination rate in the presence of a strong external magnetic field [9][10][11][12] for strongly interacting ultra cold Rydberg plasma. The study of these systems, as well as the ability to control the processes of their decay and crystallization, may provide a basis for the creation of quantum computers.…”