Vibrational structure of the <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msubsup><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>2</mn></mrow><mrow><mn>2</mn><mo>+</mo></mrow></msubsup></mrow></math></span> ground state observed by threshold photoelectron coincidence spectroscopy

R. I. Hall; G. Dawber; A. McConkey; M. A. MacDonald; G. C. King

doi:10.1103/PhysRevLett.68.2751

Vibrational structure of the $O_{2}^{2 +}$ ground state observed by threshold photoelectron coincidence spectroscopy

R. I. Hall, G. Dawber, A. McConkey, M. A. MacDonald, and G. C. King

Phys. Rev. Lett. 68, 2751 – Published 4 May 1992

Abstract

Double ionization of $O_{2}$ induced by photons from a synchrotron radiation source has been studied in an electron-electron coincidence experiment. A new technique has been developed wherein only electrons with near zero energy are detected by use of the penetrating field method. In this way high sensitivity and energy resolution have been attained allowing ninteen vibrational levels of the $O_{2}^{2 +}$ ground state to be observed and molecular parameters of this state to be obtained.

Received 21 January 1992

DOI:https://doi.org/10.1103/PhysRevLett.68.2751

Authors & Affiliations

R. I. Hall, G. Dawber, A. McConkey, M. A. MacDonald, and G. C. King

Laboratoire de Dynamique Moléculaire et Atomique, Université Pierre et Marie Curie, 4 place Jussieu T12-B75, 75252 Paris CEDEX 05, France
Department of Physics, Schuster Laboratory, Manchester University, Manchester M13 9PL, United Kingdom
Science and Engineering Research Council Daresbury Laboratory, Daresbury, Warrington WA4 4AD, United Kingdom