American Journal of Physics · 1970 · 18 citations · 0 references
Natural SciencesPhysicsCondensed Matter PhysicsNuclear PhysicsSpectroscopyAccelerator PhysicsCold Atom PhysicsAtomic Level LifetimesElectronic Density Of StatesExcited Electronic StatesLifetimes Of Excited StatesNuclear Level LifetimesRadiative Decay RateRadiative Lifetimes
In this paper, we describe our measurements of the radiative lifetimes of the 33P, 33D, 41D, and 43D electronic states of helium, using a low-energy positive ion accelerator. The lifetimes in nanoseconds are 33P (111±5), 33D (14±3), 41D (34±4), and 43D (32±1). In addition, we discuss the desirability and feasibility of introducing undergraduates to this type of research.