Eur. Phys. J. D 6, 201-209 (1999)
https://doi.org/10.1007/s100530050302

Molecular dissociative sequential excitation and ionization of strontium vapor

¹ Atomic and Molecular Physics Laboratory, Department of Physics, Quaid-i-Azam University, Islamabad 45320, Pakistan
² Applied Physics Division, PINSTECH, P. O. Box Nilore, Islamabad, Pakistan

Received: 10 September 1998
Revised: 16 December 1998
Published online: 15 May 1999

Abstract

We report new measurements on laser-assisted molecular dissociative sequential excitation and ionization spectra of strontium vapor. A single Nd:YAG pumped dye laser in conjunction with an atomic beam apparatus have been used to investigate the even parity 5snd Rydberg series resulting from the 5s5p resonance level. The relative intensities changes among the 5snd and Rydberg series are attributed to the interactions with the 4d6s perturbers, respectively. The interchannel interactions between the 5snd series and the 4d6s level and among the 5snd series and the 4d6s intruders have been separately parameterized using the two-channel quantum defect theory. 32.30.Jc Visible and ultraviolet spectra 32.80.Rm Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states)