An extension of Bloom’s treatment of the spin relaxation in alkali metal vapors

Stephen J. Kadlecek

E. I. Dashevskaya

Timur V. Tscherbul, Jacek A. Kłos, Piotr Zukowski

M. V. Balabas, Todor S. Karaulanov, M. P. Ledbetter +1 more

We demonstrate lifetimes of Zeeman populations and coherences in excess of 60 sec in alkali-metal vapor cells with inner walls coated with an alkene material. This represents 2 orders of magnitude improvement over the best paraffin coatings. We explore the temperature dependence of cells coated with this material and investigate spin-exchange relaxation-free magnetometry in a room-temperature environment, a regime previously inaccessible with conventional coating materials.

Christopher Erickson, David Levron, W. Happer +4 more

Resonances in the magnetic decoupling curves for the spin relaxation of dense alkali-metal vapors prove that much of the relaxation is due to the spin-axis interaction in triplet dimers. Initial estimates of the spin-axis coupling coefficients for the dimers (likely accurate to a factor of 2) are $|\ensuremath{\lambda}|/h\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}290\mathrm{MHz}$ for Rb; $2500\mathrm{MHz}$ for Cs.

W. Franzen