Vacuum ultraviolet excitation spectroscopy of the autoionizing Rydberg states of atomic sulfur in the 73350–84950cm−1 frequency range

• DOI: 10.1063/1.2829403
• Publication Date: 2008-02-26T02:47:26Z
• Authors: Xueliang Yang; Jingang Zhou; Brant Jones; C. Y. Ng; William M. Jackson
• Keywords: Autoionization; Rydberg state; Rydberg matter; Quantum defect; Rydberg atom

The photoionization efficiency (PIE) spectra of metastable sulfur (S) atoms in the 1 D and S states have been recorded 73 350-84 950 cm(-1) frequency range by using a velocity-mapped ion imaging apparatus that uses tunable vacuum ultraviolet laser as ionization source. S(1 D) S) are produced 193 nm photodissociation CS2. observed PIE shows 35 autoionizing resonances with little or no contribution from direct into S+(4S 3/2)+e(-) continuum. Velocity-mapped images S+ at individual Rydberg used to distinguish whether lower state resonance originates D, S, 3P states. analysis assignment peaks revealed 22 new were not previously known. autoionization lifetimes tau derived linewidths fitting lines Fano formula. Deviations scaling law tau(n*) proportional to, n*3, where n* is effective quantum number state, observed. This observation ascribed perturbations nearby triplet states, which shorten singlet levels.