Regular threshold-energy increase with charge for neutral-particle emission in collisions of electrons with oligonucleotide anions.

Abstract

Electron-DNA anion collisions were studied using an electrostatic storage ring with a merging electron-beam technique. The rate of neutral particles emitted in collisions started to increase from definite threshold energies, which increased regularly with ion charges in steps of about 10 eV. These threshold energies were almost independent of the length and sequence of DNA, but depended strongly on the ion charges. Neutral particles came from breaks of DNAs, rather than electron detachment. The step of the threshold energy increase approximately agreed with the plasmon excitation energy. It is deduced that plasmon excitation is closely related to the reaction mechanism.

Cite this paper

@article{Tanabe2004RegularTI, title={Regular threshold-energy increase with charge for neutral-particle emission in collisions of electrons with oligonucleotide anions.}, author={Teruhisa Tanabe and Kiichiro Noda and Masahiro Saito and Eugen B. Starikov and Masaki Tateno}, journal={Physical review letters}, year={2004}, volume={93 4}, pages={043201} }