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6587484 
Journal Article 
The scattering of positrons from CF4 molecules at ultralow energies 
Nishimura, T; Gianturco, FA; , 
2004 
Yes 
Journal of Physics B: Atomic, Molecular and Optical Physics
ISSN: 0953-4075
EISSN: 1361-6455 
IOP PUBLISHING LTD 
BRISTOL 
37 
1 
215-223 
WOS:000188923600015 
We present a quantum dynamical treatment of the vibrationally elastic scattering off tetrafluorocarbon (CF4) molecules by very low energy positrons. The present calculation is based on the fixed-nuclei approximation and the interaction potential between the positron and the molecular target includes the ab initio electrostatic and the target correlation-polarization effects. The latter contribution is considered by means of a parameter-free model potential based on the density functional theory. The cross sections for this system are obtained by solving multichannel close-coupling equations for the wavefunction of the scattered positron, while no positronium formation channel is taken into account by the present calculation. The elastic cross section, the scattering length (A(0)) and the location of a virtual state for the total system are obtained and discussed in detail. 
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