Yields and Time-of-Flight Spectra of Neutral High-Rydberg Fragments at the K Edges of the CO2 Molecule

Antti Kivimäki; Christian Stråhlman; Tomasz Wąsowicz; J. Kettunen; Robert Richter

doi:10.1021/acs.jpca.6b04495

Yields and Time-of-Flight Spectra of Neutral High-Rydberg Fragments at the K Edges of the CO2 Molecule

Abstract

We have studied the production of neutral fragments in high-Rydberg (HR) states at the C 1s and O 1s edges of the CO2 molecule by performing two kinds of experiments. First, the yields of neutral HR fragments were measured indirectly by ionizing such fragments in a static electric field and by collecting resulting singly charged positive ions as a function of the photon energy. Such measurements reveal not only excitations below the core ionization thresholds but also thresholds for single core–hole and shakeup photoionization. Second, we obtained the mass spectra of neutral HR fragments at selected photon energies by exploiting pulsed field ionization; they show atomic fragments C(HR) and O(HR). We discuss dissociation pathways leading to the production of neutral HR fragments in core excitation and ionization of CO2.

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Authors (5)

Antti Kivimäki
- CNR − Istituto Officina dei Materiali (IOM) .
Christian Stråhlman
- MAX IV Laboratory, Lund University .
Tomasz Wąsowicz dr hab.
J. Kettunen
- Department of Physics, University of Oulu .
Robert Richter
- Elettra − Sincrotrone Trieste .

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Category:: Articles
Type:: artykuł w czasopiśmie wyróżnionym w JCR
Published in:: JOURNAL OF PHYSICAL CHEMISTRY A no. 120, edition 25, pages 4360 - 4367,
ISSN: 1089-5639
Language:: English
Publication year:: 2016
Bibliographic description:: Kivimäki A., Stråhlman C., Wąsowicz T., Kettunen J., Richter R.: Yields and Time-of-Flight Spectra of Neutral High-Rydberg Fragments at the K Edges of the CO2 Molecule// JOURNAL OF PHYSICAL CHEMISTRY A. -Vol. 120, iss. 25 (2016), s.4360-4367
DOI:: Digital Object Identifier (open in new tab) 10.1021/acs.jpca.6b04495
Verified by:: Gdańsk University of Technology