Broadening of level-crossing signals in 5 $sup 2$ P/sub 3/2/ state of $sup 87$ Rb and $sup 85$ Rb by collisions with noble-gas atomsBroadening of level-crossing signals in 5$sup 2$P/sub 3/2/ state of $sup 87$Rb and $sup 85$Rb by collisions with noble-gas atoms

M. Łukaszewski

May 1, 19750 citations

Level broadening cross sections for nP1/2Rydberg states of Na, K and Rb atoms

Leszek Sirko, K. Rosiński

The impact broadening of Na(nP1/2) (n=6-24), K(nP1/2) (n=8-24) and Rb(nP12/) (n=10-24) levels by noble-gas atoms, N2 molecules and alkali atoms in the ground state has been investigated. Broadening cross sections have been evaluated on the grounds of contributions coming from Rydberg-electron-perturber and ionic core-perturber scattering. Broadening cross sections for Cs(nD3/2)+Cs(6S) collisions for n=11-23 have also been calculated to compare with the experimental ones. Theoretically evaluated broadening cross sections for K(nP12/)+K(4S) and Cs(nD3/2)+Cs(6S) collisions appeared to be in good agreement with existing experimental data.The impact broadening of Na(nP1/2) (n=6-24), K(nP1/2) (n=8-24) and Rb(nP12/) (n=10-24) levels by noble-gas atoms, N2 molecules and alkali atoms in the ground state has been investigated. Broadening cross sections have been evaluated on the grounds of contributions coming from Rydberg-electron-perturber and ionic core-perturber scattering. Broadening cross sections for Cs(nD3/2)+Cs(6S) collisions for n=11-23 have also been calculated to compare with the experimental ones. Theoretically evaluated broadening cross sections for K(nP12/)+K(4S) and Cs(nD3/2)+Cs(6S) collisions appeared to be in good agreement with existing experimental data.

Journal of Physics B Atomic Molecular and Optical PhysicsJul 28, 19880 citations

Broadening of level-crossing signals in state of 87Rb by collisions with argon

M. Łukaszewski, A. Sieradzan

Physics Letters AMar 1, 19735 citations

Analytical approximations to the dynamics of cubic level crossing model

Chon‐Fai Kam, Yang Chen

Zeitschrift für angewandte Mathematik und PhysikApr 30, 20212 citations

Charge exchange collisions between alkaline-earth ions and alkali atoms

Ludo Vermeeren, Peter Lievens, Anita Buekenhoudt +1 more

The ratio of the charge exchange cross sections for Ba + (5d) and Ba + (6s) on Na, Rb and Cs, for Sr + (4d) and Sr + (5s) on Na and Rb, and for Ca + (3d) and Ca - (4s) on Na have been measured for ion impact energies between 0.5 keV and 30 keV. For the collisions with Na, absolute charge exchange cross section values are derived using data for the resonant process Na+Na + as a reference. The results are compared to theoretical near-resonance predictions. A method is proposed to study the polarization dependence of the neutralization cross sections for reactions involving ionic D states.The ratio of the charge exchange cross sections for Ba + (5d) and Ba + (6s) on Na, Rb and Cs, for Sr + (4d) and Sr + (5s) on Na and Rb, and for Ca + (3d) and Ca - (4s) on Na have been measured for ion impact energies between 0.5 keV and 30 keV. For the collisions with Na, absolute charge exchange cross section values are derived using data for the resonant process Na+Na + as a reference. The results are compared to theoretical near-resonance predictions. A method is proposed to study the polarization dependence of the neutralization cross sections for reactions involving ionic D states.

Journal of Physics B Atomic Molecular and Optical PhysicsMar 14, 19925 citations

Broadening of level-crossing signals in 5

sup 2

P/sub 3/2/ state of

sup 87

Rb and

sup 85

Rb by collisions with noble-gas atoms