Regular Threshold-Energy Increase with Charge for Neutral-Particle Emission in Collisions of Electrons with Oligonucleotide Anions | Zendy

T. Tanabe | Zendy; K. Noda | Zendy; M. Saito | Zendy; E. B. Starikov | Zendy; Masaru Tateno | Zendy

Open Access

Regular Threshold-Energy Increase with Charge for Neutral-Particle Emission in Collisions of Electrons with Oligonucleotide Anions

Author(s) -

T. Tanabe,

K. Noda,

M. Saito,

E. B. Starikov,

Masaru Tateno

Publication year - 2004

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.93.043201

Subject(s) - atomic physics , ion , electron , excitation , plasmon , charged particle , particle (ecology) , physics , materials science , nuclear physics , oceanography , quantum mechanics , geology

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

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