Research Papers in Physics and Astronomy


Date of this Version

February 2004


DOI: 10.1103/PhysRevLett.92.068102
Published in Physical Review Letters 92:6. © 2004 The American Physical Society. Used by permission.


Low energy electrons are capable of breaking bonds in gas phase DNA bases by means of the dissociative electron attachment process.With the aid of new total scattering data in the halouracils and input from quantum chemical calculations, we describe the dipole bound and valence anion states in these compounds and present assignments for the two types of structure appearing in the cross sections. A clear distinction between the two mechanisms for bond breaking is necessary for an understanding of electron induced damage to DNA.

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