Abstract
In the present experimental work, oscillator strengths of the 4s5s 3S1 → 4snp 3Po2 (18 ≤ n ≤ 53) Rydberg transitions of zinc are reported. The stepwise laser excitation from the ground state 4s2 1S0 was achieved using three dye laser beams simultaneously pumped by the second (532 nm) and third (355 nm) harmonics of a Q-switched Nd: YAG (Neodymium-doped yttrium aluminum garnet) laser. The vapor containment and detection system was a single wire thermionic diode ion detector operating in space charge limited mode. A trend of the above-mentioned f-values from n = 18 to 53 versus the principle quantum number n has been presented. Furthermore, continuity has been verified between the discrete f-values and the oscillator strength density at the threshold.
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