1996
DOI: 10.1063/1.471270
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Zero kinetic energy-pulsed field ionization and resonance enhanced multiphoton ionization photoelectron spectroscopy: Ionization dynamics of Rydberg states in HBr

Abstract: The results of rotationally resolved resonance enhanced multiphoton ionization photoelectron spectroscopy and zero kinetic energy-pulsed field ionization studies on HBr via various rotational levels of the F 1 ⌬ 2 and f 3 ⌬ 2 Rydberg states are reported. These studies lead to an accurate determination of the lowest ionization threshold as 94 098.9Ϯ1 cm Ϫ1. Observed rotational and spin-orbit branching ratios are compared to the results of ab initio calculations. The differences between theory and experiment hig… Show more

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Cited by 37 publications
(32 citation statements)
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“…The main experimental apparatus has been discussed in detail before, 11 and only aspects concerning the ZEKE-PFI setup will be discussed. Briefly, in the ionization chamber of a ''magnetic bottle'' time-of-flight spectrometer two grids have been installed on the magnetic pole faces for the purpose of applying static and/or pulsed electric fields.…”
Section: Methodsmentioning
confidence: 99%
“…The main experimental apparatus has been discussed in detail before, 11 and only aspects concerning the ZEKE-PFI setup will be discussed. Briefly, in the ionization chamber of a ''magnetic bottle'' time-of-flight spectrometer two grids have been installed on the magnetic pole faces for the purpose of applying static and/or pulsed electric fields.…”
Section: Methodsmentioning
confidence: 99%
“…The experimental setup has been described before, 8 and will only briefly be discussed here. The spin-orbit autoionization spectra of HBr were recorded in a ''magnetic bottle'' time-of-flight electron spectrometer.…”
Section: Methodsmentioning
confidence: 99%
“…Highly accurate spectroscopic constants of the X 2 ⌸ ionic state have previously been determined in a laser magnetic resonance study on the HBr ϩ ion. 15 The absolute ionization energy of the X 2 ⌸ ionic system, on the other hand, has recently been obtained by our group in a ZEKE-PFI study via the f 3 ⌬ 2 and F 1 ⌬ 2 Rydberg states, 8 as well as by others in a vuv ZEKE-PFI study from the ground state. 10 Combination of these data yields the necessary accurate values of the rotational ionic thresholds, 8 which are given in Table I.…”
Section: B Mqdt Calculationsmentioning
confidence: 99%
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