The Na2 2 3pi(g) state: new observations and hyperfine structure.
Many more Na2 2 3pi(g) v = 0-43, omega = 0, 1, 2 levels have been observed by sub-Doppler continuous wave perturbation facilitated optical-optical double resonance fluorescence excitation spectroscopy and the hyperfine structure of the omega = 0 and 2 levels has been resolved. New molecular constants for the less perturbed v = 0-43 levels have been obtained with these new and the previously reported data. The hyperfine coupling scheme of the observed 2 3pi(g) levels is close to Hund's case a(beta) with a Fermi contact constant b(F) = 160+/-5 MHz, which is smaller than the Fermi contact constants of other Na2 triplet Rydberg states, b(F) = 200-245 MHz.
Qi
Peng
P
Department of Physics, Temple University, Philadelphia, Pennsylvania 19122, USA.
Lazarov
Guenadiy
G
Lyyra
A Marjatta
AM
Liu
Yaoming
Y
Cui
Chengzhe
C
Li
Li
L
Jeung
Gwang-Hi
GH