S.L. Palfrey, D. Grischkowsky
Optics Letters
Fine-structure intervals separating the n=10, L=4, 5, 6, and 7 manifolds of helium have been measured in a fast atomic beam with precision sufficient to resolve predicted vacuum-fluctuation corrections to the structure. We find the intervals (in the absence of spin) to be as follows: 10G-H, 490.990(10) MHz; 10H-I, 157.068(13) MHz; 10I-K, 60.818(10) MHz. The results set an experimental limit on the contributions of retarded long-range interactions that is comparable to their expected size. © 1984 The American Physical Society.
S.L. Palfrey, D. Grischkowsky
Optics Letters
T.F. Heinz, S.L. Palfrey
CLEO 1984
T.F. Heinz, S.L. Palfrey, et al.
Optics Letters
S.L. Palfrey, T.F. Heinz
Journal of the Optical Society of America B: Optical Physics