ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
Angle-resolved photoelectron spectroscopy was carried out on hydrogen iodide using synchrotron radiation. Applying the constant ionic state (CIS) method, studies were made on resonances associated with autoionization between the ionization potential for the two spin-orbit split lone pair orbitals, π3/2 and π1/2. Data on both partial cross sections and angular distribution parameters, β, were obtained for the production of the first ionic state 2Π3/2 (v=0). These data indicate the presence of several series of Rydberg states leading to the second ionization potential 2Π1/2 (v=0). Both broad and sharp resonances were observed. A detailed comparison of the data is made with a MQDT calculation in the range of 10.6 to 10.73 eV. Although theory predicts some of the features correctly, there is much room for improvement. Results on the first excited vibrational state [2Π3/2 (v=1)] are also presented and the effects of vibrational states are discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.449959
