Electron-stimulated desorption of anions from thin films of linear and supercoiled DNA is investigated in the range 3--20 eV. Resonant structures are observed with maxima at 9.4±0.3, 9.2±0.3, and 9.2±0.3 eV, respectively, in the yield dependence of H^-, O^-, and OH^- on the incident electron energy. Their formation is attributed to dissociative electron attachment.
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Pan et al. (2003) studied this question.
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