Abstract
Hyperpolarized K- comagnetometers have been used for tests of fundamental physics and inertial rotation sensing. These experiments will demonstrate increased sensitivity if the buffer gas is replaced with . We measure the parameters necessary to realize implementation of an alkali-metal– comagnetometer for two promising alkali-metal species, Rb and K. The spin-exchange rate constant for K with and Rb with are measured using two different methods. We also make the first measurement of the K- contact spin interaction. Measurements for the Rb- contact spin interaction, as well as the spin-destruction coefficients for with both alkali-metal species are consistent with previous measurements. Additionally the quadrupolar spin-relaxation rate of is measured. Finally, the feasibility of utilizing polarized for operation in a comagnetometer is discussed.
- Received 8 September 2009
DOI:https://doi.org/10.1103/PhysRevA.81.043415
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