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. 2005 Sep 22;123(12):124302.
doi: 10.1063/1.2035592.

Bond selective dissociative electron attachment to thymine

S Ptasińska  1 , S Denifl, B Mróz, M Probst, V Grill, E Illenberger, P Scheier, T D Märk
Affiliations

Bond selective dissociative electron attachment to thymine

S Ptasińska et al. J Chem Phys. .

Abstract

Free-electron attachment to thymine and partially deuterated thymine, where D replaces H at all carbon atoms, is studied in the electron energy range from about 0 to 15 eV. The formation of fragment anions that are formed by the loss of one or two H (D) atoms is analyzed as a function of the incident electron energy using a crossed electron/neutral beam apparatus in combination with a quadrupole mass spectrometer. By using partially deuterated thymine and quantum-chemical calculation a bond selectivity for the loss of one and two hydrogen atoms is observed that is determined only by the kinetic energy of the incident electron.

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