Intense SrF radical beam for molecular cooling experiments.
We have developed a continuous SrF radical beam for the loading of helium buffer gas cooling. The SrF molecules are efficiently generated by high-temperature chemical reaction of the solid precursor SrF(2) with boron in a graphite oven. The beam properties are characterized with laser-induced fluorescence spectroscopic method. We obtain a molecular flux of up to 2.1x10(15) sr(-1) s(-1) at the detection region for all rotational states. The dependence of the flux on oven temperature suggests that even higher flux is possible if a higher temperature in the oven is achieved.
Tu
Ming-Feng
MF
Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan.
Ho
Jia-Jung
JJ
Hsieh
Chih-Chiang
CC
Chen
Ying-Cheng
YC