Influence of dynamic screening on the scattering cross sections of the particles in the dense nonideal plasmas of noble gases

Abstract

Within the dynamic screening potential model, elastic scattering processes between electrons and atoms in partially ionized plasmas were investigated using the method of phase functions. The phase shifts were calculated by solving the Calogero equation. Differential and total cross sections for the scattering of electrons on noble gas atoms were calculated and compared with experimental and other theoretical data. It was shown that the polarization potential is adequate for description the interaction between charged and neutral particles in partially ionized plasma. Analysis of the results showed that the phase shifts of electron atom scattering obtained with taking into account the dynamic screening are larger than the data obtained with consideration of static screening. The results can be used to calculate the various transport coefficients of the semiclassical dense plasma.

Influence of dynamic screening on the conductivity of hydrogen plasma including electron–electron collisions

“…The effective potential [17][18][19][20][21] of electron-ion (e-i) and electron-electron (e-e) interactions, taking into account the effects of diffraction and static (S) or dynamic (D) screening, can be written as [17][18][19][20][21][22][23] or 0 = D (1 + 2 ∕ 2 Th ) 1∕2 (dynamic screening), [24][25][26][27][28] is the relative velocity of the colliding particles, and Th = (k B T/m e ) 1/2 is the thermal velocity. r D = (k B T/[8 e 2 n e ]) 1/2 is the Debye length.…”

Kinetic ionization and recombination coefficients in the dense semiclassical plasmas on the basis of the effective interaction potential

“…Femtosecond laser pulses with high intensities are available now to produce hot dense plasmas in the laboratory. The development in the fields of laser produced plasmas [1] and heavy ion beam plasma [2] interactions led to a growing interest in the kinetics of ionization [3] and recombination [3][4] and also in other processes in the dense semiclassical plasmas [5][6][7][8][9][10][11].…”

“…In the present work we have used this approach to calculate the cross section of the electron capture by the hydrogen ion (proton) on the basis of the numerical simulation of the equations of electron motion near proton. The effective potential of electron-ion interactions, taking into account the effects of static screening and diffraction [5][6][7][8][9][10][11][12][13][14] has been used for this goal.…”

Electron capture cross sections by different atoms based on the perturbation theory

“…Оно также важно для развития технологий, связанных с применением плазмы. Мы использовали разработанный нами ранее оригинальный потенциал взаимодействия между электроном и атомом в частично ионизованной водородной плазме, который был представлен в работах [1][2][3][4][5]. Этот и другие авторские потенциалы взаимодействия частиц неидеальной плазмы получили широкое применение при исследовании свойств квазиклассической плазмы [6][7][8][9][10][11][12][13][14][15][16][17].…”