Nanoscopic models for radiobiological damage: metastable precursors of dissociative electron attachment to formic acid F A Gianturco and R R Lucchese Total and positronium formation cross sections for positron scattering from H2O and HCOOH
نویسندگان
چکیده
We report experimental results for electron scattering from formic acid (HCOOH). A set of differential cross-sections is provided for elastic scattering at incident electron energies from 1.8 to 50 eV. Integral and momentum transfer cross-sections have also been derived from these results. Our results are compared, where possible, with recent theoretical calculations.
منابع مشابه
Nanoscopic models for radiobiological damage: metastable precursors of dissociative electron attachment to formic acid
The HCOOH molecule represents the simplest organic acid which is also supposed to play a role in the interstellar formation of more complicated biomolecules. Its interaction with slow electrons in the gas phase is analysed in the present work with the view of providing specific structural and dynamical information on those resonant states which lead to different transient negative ions (TNIs) f...
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In the present work, the transition matrix elements as well as differential and total scattering cross-sections for positronium formation in Positron-Hydrogen atom collision and hydrogen formation in Positronium-Hydrogen ion collision, through the charge transfer channel by Two-Centre Close-Coupling method up to a first order approximation have been calculated. The charge transfer collision is ...
متن کاملExperimental evidence on the mechanism of dissociative electron attachment to formic acid.
Two mechanisms for dissociative electron attachment in HCOOH, the formation of HCOO(-)+H, were proposed in the literature: (i) via a direct electron attachment into a σ* resonance, augmented by dipole binding of the incident electron [G. A. Gallup et al., Phys. Rev. A 79, 042701 (2009)], and (ii) with the 1.8 eV π* resonance as a doorway state, linked to the products by symmetry lowering-distor...
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متن کاملElastic electron scattering from formic acid (HCOOH): absolute differential cross-sections
We report experimental results for electron scattering from formic acid (HCOOH). A set of differential cross-sections is provided for elastic scattering at incident electron energies from 1.8 to 50 eV. Integral and momentum transfer cross-sections have also been derived from these results. Our results are compared, where possible, with recent theoretical calculations.
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