Anisotropic fragmentation in low-energy dissociative recombination
Abstract
On a dense energy grid reaching up to 75 meV electron collision energy the fragmentation angle and the kinetic energy release of neutral dissociative recombination fragments have been studied in a twin merged beam experiment. The anisotropy described by Legendre polynomials and the extracted rotational state contributions were found to vary on a likewise narrow energy scale as the rotationally averaged rate coefficient. For the first time angular dependences higher than 2 order could be deduced. Moreover, a slight anisotropy at zero collision energy was observed which is caused by the flattened velocity distribution of the electron beam.
Cite
@article{arxiv.0810.0417,
title = {Anisotropic fragmentation in low-energy dissociative recombination},
author = {S. Novotny and H. Rubinstein and H. Buhr and O. Novotný and J. Hoffmann and M. B. Mendes and D. A. Orlov and M. H. Berg and M. Froese and A. S. Jaroshevich and B. Jordon-Thaden and C. Krantz and M. Lange and M. Lestinsky and A. Petrignani and I. F. Schneider and D. Shafir and F. O. Waffeu Tamo and D. Zajfman and D. Schwalm and A. Wolf},
journal= {arXiv preprint arXiv:0810.0417},
year = {2010}
}
Comments
8 pages, 4 figures; The Article will be published in the proceedings of DR 2007, a symposium on Dissociative Recombination held in Ameland, The Netherlands (18.-23. July 2008); Reference 19 has been published meanwhile in S. Novotny, PRL 100, 193201 (2008)