title: Far-infrared-laser magnetic-resonance spectroscopy of (4)He S and P states.
abstract: A CO(2)-pumped far-infrared (FIR) laser has been used to drive transitions between S and P levels of (4)He Rydberg states with the same principal quantum number (n). The levels are tuned to resonance with the fixed-frequency FIR laser through application of an intense magnetic field. Measurements of such transitions are particularly valuable as they provide high-resolution data for low L states, a previously ill-defined area in the otherwise wellknown energy-level structure of (4)He.
authors.forename: M
authors.initials: M
authors.lastname: Rosenbluh
authors.forename: H
authors.initials: H
authors.lastname: Le
authors.forename: B
authors.initials: B
authors.lastname: Lax
authors.forename: R
authors.initials: R
authors.lastname: Panock
authors.forename: T A
authors.initials: TA
authors.lastname: Miller