Low energy positron interactions with uracil—Total scattering, positronium formation, and differential elastic scattering cross sections

Journal Article · Mon Jul 21 04:00:00 EDT 2014 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.4887072· OSTI ID:22419893

Anderson, E. K.; Boadle, R. A.; Machacek, J. R.; Makochekanwa, C.; Sullivan, J. P. ^[1]; Chiari, L. ^[2]; Brunger, M. J. ^[2]; Garcia, G. ^[3]; Blanco, F. ^[4]; Ingolfsson, O. ^[5]

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1. ARC Centre for Antimatter-Matter Studies, Research School of Physics and Engineering, The Australian National University, Canberra 0200 (Australia)
2. ARC Centre for Antimatter-Matter Studies, Flinders University, GPO Box 2100, Adelaide, 5001 SA (Australia)
3. Instituto de Fısica Fundamental, Consejo Superior de Investigationes Cientıficas (CSIC), Serrano 113-bis, E-28006 Madrid (Spain)
4. Departamento de Fısica Atomica, Molecular y Nuclear, Universidad Complutense de Madrid, E-28040 Madrid (Spain)
5. Department of Chemistry, Science Institute, University of Iceland, Reykjavík 107 (Iceland)

Measurements of the grand total and total positronium formation cross sections for positron scattering from uracil have been performed for energies between 1 and 180 eV, using a trap-based beam apparatus. Angular, quasi-elastic differential cross section measurements at 1, 3, 5, 10, and 20 eV are also presented and discussed. These measurements are compared to existing experimental results and theoretical calculations, including our own calculations using a variant of the independent atom approach.

• OSTI ID: 22419893
• Journal Information: Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 3 Vol. 141; ISSN JCPSA6; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
DIFFERENTIAL CROSS SECTIONS
ELASTIC SCATTERING
INTERACTIONS
POSITRONIUM
POSITRONS
URACILS