S. Rochester et al., Measurement of lifetimes and tensor polarizabilities of odd-parity states of atomic samarium, PHYS REV A, 59(5), 1999, pp. 3480-3494
A systematic measurement of the lifetimes and tensor polarizabilities of th
e lowest-lying odd-parity levels of Sm I was performed. The lifetimes were
measured by detecting time-resolved fluorescence following pulsed-laser exc
itation of atoms in an atomic beam; polarizabilities were measured employin
g the method of Stask-induced quantum beats. An analysis of the data is und
ertaken to find the best even-parity candidate states for an atomic electri
c dipole moment (EDM) measurement. For the most favorable candidate state (
(7)G(1)), the electron EDM enhancement factor is evaluated to be in the ran
ge \R\approximate to 100-3800. Critical analysis of the present data along
with earlier results in Sm shows the necessity of a term reassignment for s
everal odd-parity states. This term reassignment is also used in an estimat
e of the parity-nonconserving F-7(0)-(7)G(1) amplitude. [S1050-2947(99)1040
5-0].