Positron binding to alkali-metal hydrides: The role of molecular vibrations

Franco Gianturco; Jan Franz; Robert Buenker; Heinz-Peter Liebermann; Lukáš Pichl; Jan-Michael Rost; Masanori Tachikawa; Mineo Kimura

doi:10.1103/physreva.73.022705

Positron binding to alkali-metal hydrides: The role of molecular vibrations

Abstract

The bound vibrational levels for J=0 have been computed for the series of alkali-metal hydride molecules from LiH to RbH, including NaH and KH. For all four molecules the corresponding potential-energy curves have been obtained for each isolated species and for its positron-bound complex (e+XH). It is found that the calculated positron affinity values strongly depend on the molecular vibrational state for which they are obtained and invariably increase as the molecular vibrational energy content increases. The consequences of our findings on the likelihood of possibly detecting such weakly bound species are briefly discussed.

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Authors (8)

Franco Gianturco
- University of Rome La Sapienza Department of Chemistry
Jan Franz dr hab.
- Univer- sity College London Present address: Department of Physics and Astronomy
Robert Buenker
- Bergische Universitaet Wuppertal Fachbereich C-Mathematik und Naturwissenschaften
Heinz-Peter Liebermann
- Bergische Universitaet Wuppertal Fachbereich C-Mathematik und Naturwissenschaften
Lukáš Pichl
- Max Planck Institute for the Physics of Complex Systems
Jan-Michael Rost
- Max Planck Institute for the Physics of Complex Systems
Masanori Tachikawa
- Yokohama-city University Graduate School of Science
Mineo Kimura
- Kyushu University Graduate School of Sciences

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DOI:: Digital Object Identifier (open in new tab) 10.1103/physreva.73.022705
License: Copyright (2006 American Physical Society)

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Category:: Articles
Type:: artykuł w czasopiśmie wyróżnionym w JCR
Published in:: PHYSICAL REVIEW A no. 73, edition 2, pages 1 - 9,
ISSN: 2469-9926
Language:: English
Publication year:: 2006
Bibliographic description:: Gianturco F., Franz J., Buenker R., Liebermann H., Pichl L., Rost J., Tachikawa M., Kimura M.: Positron binding to alkali-metal hydrides: The role of molecular vibrations// PHYSICAL REVIEW A. -Vol. 73, iss. 2 (2006), s.1-9
DOI:: Digital Object Identifier (open in new tab) 10.1103/physreva.73.022705
Verified by:: Gdańsk University of Technology