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Phys. Rev. A 72, 032724 (2005) [11 pages]

Metastable trapping of low-energy positrons by cubane: A computational experiment

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F. A. Gianturco*
Department of Chemistry, University of Rome “La Sapienza” and INFM, Piazzale A. Moro 5, 00185 Rome, Italy

P. Nichols
Department of Chemistry, University of New Orleans, New Orleans, Louisiana 70148, USA

T. L. Gibson
Department of Physics, Texas Tech University, P. O. Box 4180, Lubbock, Texas 79409-1051, USA

R. R. Lucchese
Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255, USA

Received 11 April 2005; published 21 September 2005

Quantum-mechanical calculations of low-energy collisions of positrons with cubane (C8H8) molecules are carried out using a model interaction potential and solving the corresponding scattering equations. The possible presence of low-energy resonances is analyzed in detail and one of them is found to reside largely inside the carbon frame of the cubane. The consequences of this finding are discussed and analyzed.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.72.032724
DOI:
10.1103/PhysRevA.72.032724
PACS:
34.10.+x, 36.10.Dr

*Corresponding author. Email address: fa.gianturco@caspur.it; FAX: +39-06-49913305.

 
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