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Low energy (1–19 eV) electron scattering from condensed thymidine (dT) I: absolute vibrational excitation cross sections

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Abstract

Absolute cross sections (CSs) for vibrational excitation by electrons of energy between 1–19 eV scattering from condensed thymidine (dT) were measured by means of high-resolution electron energy loss spectroscopy (HREELS). The CSs were extracted from electron energy loss spectra of dT condensed on multilayers film of Ar held at about 20 K under ultra-high vacuum (∼1 × 10−11 Torr). dT is one of the most complex molecules to be studied in condensed phase by HREELS. The magnitudes of the vibrational CSs lie within the 10−17 cm2 range. Structures observed in the energy dependence of the vibrational CSs under 3 eV and around 4 eV were compared with previous results of gas- and solid-phase studies on dT and related molecules (e.g., thymine and tetrahydrofuran). These structures were attributed to the formation of shape resonances.

Graphical abstract: Low energy (1–19 eV) electron scattering from condensed thymidine (dT) I: absolute vibrational excitation cross sections

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Publication details

The article was received on 18 Jun 2019, accepted on 03 Sep 2019 and first published on 03 Sep 2019


Article type: Paper
DOI: 10.1039/C9CP03447A
Phys. Chem. Chem. Phys., 2019, Advance Article

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    Low energy (1–19 eV) electron scattering from condensed thymidine (dT) I: absolute vibrational excitation cross sections

    V. Lemelin, A. D. Bass, P. Cloutier and L. Sanche, Phys. Chem. Chem. Phys., 2019, Advance Article , DOI: 10.1039/C9CP03447A

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