Title :
Multiphoton double ionization of barium
Author :
Jones, R.R. ; Zhu, Y. ; Eichmann, U. ; Gallagher, T.F.
Author_Institution :
Dept. of Phys., Virginia Univ., Charlottesville, VA, USA
fDate :
10/1/1988 12:00:00 AM
Abstract :
The multiphoton double ionization of Ba from ~280 to 700 nm was investigated using laser pulses 5 ns long of peak intensity ~1010 W/cm2. The spectrum consists of a number of strong resonances, which can be assigned to Ba+ transitions. Most of the assignments have been verified by pump-probe techniques. Thus, the Ba++ observed is due to sequential ionization. The multiphoton ionization probability is highest for λ~500 nm, which matches a series of strong Ba and Ba+ transitions leading to double ionization
Keywords :
atomic photoionisation; barium; multiphoton processes; 280 to 700 nm; Ba; Ba+; Ba2+; ionization probability; laser pulses; multiphoton double ionization; peak intensity; pump-probe techniques; sequential ionization; Atom lasers; Atomic beams; Atomic layer deposition; Barium; Electrons; Ionization; Laser theory; Laser transitions; Pulsed laser deposition; Pump lasers;
Journal_Title :
Plasma Science, IEEE Transactions on
