title: Zeeman relaxation of CaF in low-temperature collisions with helium.
abstract: The collision-induced Zeeman relaxation rate for collisions of CaF X2Sigma(v('')=0) with 3He is measured to be Gamma(Z)=(7.7+5.4/-2.5)x10(-15) cm(3)/s at 2 K. This rate is a direct measurement of the influence of spin-rotation coupling on Zeeman relaxation in the first rotational level of CaF. The relationship of this rate to known molecular constants is consistent with recent theory of cold molecular collisions and outlines the (2)Sigma molecules conducive to magnetic trapping.
authors.affiliation: Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA.
authors.forename: Kenneth
authors.initials: K
authors.lastname: Maussang
authors.forename: Dima
authors.initials: D
authors.lastname: Egorov
authors.forename: Joel S
authors.initials: JS
authors.lastname: Helton
authors.forename: Scott V
authors.initials: SV
authors.lastname: Nguyen
authors.forename: John M
authors.initials: JM
authors.lastname: Doyle