7S(1/2) ? 9S(1/2) two-photon spectroscopy of trapped francium.
We report on the spectroscopic measurement of the (210)Fr 9S(1/2) energy obtained by two-photon excitation of atoms confined and cooled in a magneto-optic trap. The resonant intermediate level 7P(3/2) is the upper state of the trapping transition. We have measured the energy difference between the 9S(1/2) state and the 7S(1/2) ground state to be 25 671.021 +/- 0.006 cm(-1).
Simsarian
J E
JE
Shi
W
W
Orozco
L A
LA
Sprouse
G D
GD
Zhao
W Z
WZ