Estimates of the Rb- $^{131}\mathrm{Xe}$ spin-exchange cross section have been obtained by observing the nuclear spin relaxation of $^{131}\mathrm{Xe}$ in the presence of a Rb vapor. Nuclear spin relaxation of $^{131}\mathrm{Xe}$ due to the presence of a foreign buffer gas and the relaxation rate on the glass walls of the cell have also been observed.Estimates of the Rb-$^{131}\mathrm{Xe}$ spin-exchange cross section have been obtained by observing the nuclear spin relaxation of $^{131}\mathrm{Xe}$ in the presence of a Rb vapor. Nuclear spin relaxation of $^{131}\mathrm{Xe}$ due to the presence of a foreign buffer gas and the relaxation rate on the glass walls of the cell have also been observed.

Physical Review LettersJan 21, 198021 citations

Spin Relaxation of Atoms in Molecular Buffer Gases

Howard C. Berg

The Journal of Chemical PhysicsSep 1, 19655 citations

Magneto-optical resonances at the D2 line of Rb in a hot Cs buffer gas confined in a micrometric thickness optical cell

P. Todorov, Nikolay Petrov, Zara Kasapeteva +6 more

Ground-state level-crossing magneto-optical resonances are registered at the D2 line of 85Rb atoms as a small admixture in a 700 µm thick cell filled with Cs atoms. The signals of the Rb atoms in a “buffer gas” of hot Cs atoms are compared with the signals from atoms without hot “buffer gas” (the thermal Cs atoms in the 700 µm cell and a nanometric cell). Our results show that the Rb particles show an intermediate behavior between these two cases under such conditions. This is explained based on adequate confinement size determined by the polarization relaxation of the Rb atoms by spin-exchange collisions with the high-density Cs atoms. The possibility of realizing such temperature-controlled variation of the effective confinement size can be of interest for investigating collisions between different alkali atoms and the formation of dimers under the conditions of one-dimensional confinement.Ground-state level-crossing magneto-optical resonances are registered at the D2 line of 85Rb atoms as a small admixture in a 700 µm thick cell filled with Cs atoms. The signals of the Rb atoms in a “buffer gas” of hot Cs atoms are compared with the signals from atoms without hot “buffer gas” (the thermal Cs atoms in the 700 µm cell and a nanometric cell). Our results show that the Rb particles show an intermediate behavior between these two cases under such conditions. This is explained based on adequate confinement size determined by the polarization relaxation of the Rb atoms by spin-exchange collisions with the high-density Cs atoms. The possibility of realizing such temperature-controlled variation of the effective confinement size can be of interest for investigating collisions between different alkali atoms and the formation of dimers under the conditions of one-dimensional confinement.

AIP conference proceedingsJan 1, 20240 citations

Estimates of the Rb-

^{131}\mathrm{Xe}

spin-exchange cross section have been obtained by observing the nuclear spin relaxation of

^{131}\mathrm{Xe}

in the presence of a Rb vapor. Nuclear spin relaxation of

^{131}\mathrm{Xe}

due to the presence of a foreign buffer gas and the relaxation rate on the glass walls of the cell have also been observed.