Abstract
Mass-analyzed photoionization spectra have been obtained from beams of atomic iodine and atomic tellurium from their respective ionization thresholds to ∼ 19 eV. In each instance the ionization thresholds are confirmed. For iodine, most of the features in the autoionization resonance spectrum have been identified and assigned to several - and -like Rydberg series converging to the higher-ionization limits , , , and of the configuration. For tellurium we also observe autoionization resonance features assigned to - and -like Rydberg series converging to the higher-ionization limits , , , and of the configuration. In addition, a window-resonance series and additional peaks have been assigned as converging to the state of , with quantum defect of ∼0.5 (modulo 1). In both elements, the -like series exhibits anomalous resonance profiles similar to those in the heavier noble gases, with quantum defects of ∼0.4 (modulo 1). The -like series has quantum defects of ∼0.0 (modulo 1). Some comparisons are made with many-body calculations on the related chlorine atom.
- Received 13 January 1981
DOI:https://doi.org/10.1103/PhysRevA.24.149
©1981 American Physical Society