The He I photoektron spectra of gas-phase oxygen dimer and oxygen clusters have been measured in a pulsed beam, The spectrum of the dimer (Oz), is characterized by broad bands which show 1 : 1 correspondence with those of the monomer 0,. The vertical ionization energies are 0.2 f 0.1 eV lower than t
Photoelectrons from negative dimers and clusters of sulfur dioxide
β Scribed by T. Dresch; H. Kramer; Y. Thurner; R. Weber
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 481 KB
- Volume
- 177
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
Photoelectrons originating from sulfur dioxide cluster anions were studied using a tandem mass spectrometer combined with an electron detector and intracavity argon-ion and dye lasers. The absolute photodetachment cross section of the dimer anion increases to (8 k 1) x 1 O-I9 cm2 at 2.7 I eV photon energy. Electrons detected from the interaction of photons with sulfur dioxide clusters wcrc found to be produced in sequential two-step processes only, revealing a lower bound of the cluster's detachment threshold energy of 2.7 eV.
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