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Theoretical and experimental study on scattering of low-energy electrons by dimethyl and diethyl ethers

Abstract

We report a joint theoretical and experimental investigation on low-energy electron scattering by dimethyl and diethyl ethers. The experimental elastic differential cross sections were measured at impact energies from 1 eV up to 30 eV and scattering angle range of 10◦ to 130◦. Theoretical elastic differential, integral and momentum-transfer cross sections are calculated at impact energies up to 30 eV, employing the Schwinger multichannel method implemented with norm-conserving pseudopotentials, in the static-exchange and static-exchange plus polarization approximations. Our experimental and theoretical results for dimethyl and diethyl ether are compared with previous data for their isomers, ethanol and butanol, respectively. These comparisons reveal that although the cross sections for the ether and its respective alcohol present similar magnitudes, the angular behavior of their differential cross sections shows some significant differences. From the analysis of the integral cross sections for electron scattering by dimethyl and diethyl ether, we observe a broad structure, at around 9.5 eV, which we assign as the overlap of several resonant structures.

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Category:
Articles
Type:
artykuły w czasopismach
Published in:
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS no. 53,
ISSN: 0953-4075
Language:
English
Publication year:
2020
Bibliographic description:
Tatreau G., Hlousek B., Zawadzki M., Khakoo M., Bardela F., Barbosa A., Bettega M.: Theoretical and experimental study on scattering of low-energy electrons by dimethyl and diethyl ethers// JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS -Vol. 53,iss. 22 (2020), s.225202-
DOI:
Digital Object Identifier (open in new tab) 10.1088/1361-6455/abb02f
Verified by:
Gdańsk University of Technology

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