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Title: Low to intermediate energy elastic electron scattering from dichloromethane (CH 2 Cl 2 )

Abstract

We report a theoretical-experimental investigation of electron scattering by dichloromethane (CH2Cl2) in the low- and intermediate energy ranges. Experimental elastic differential cross sections (DCS), in the incident electron energy range of 0.5–800 eV and scattering angle range of 10°–130°, were measured using a crossed beam relative flow technique. Integral and momentum-transfer cross sections were determined from the experimental DCS. Theoretical elastic differential, integral, and momentum-transfer, as well as grand-total, and total absorption cross sections were also calculated for impact energies ranging from 0.5 to 500 eV. A complex optical Hartree–Fock potential represented the electron-target interaction and a single-center expansion method combined with a Padé approximation was used to solve the scattering equations. Three resonances: a 2A1 C–Cl kσ* resonance centered at about 3.5 eV, a 2B2 C–Cl kσ* resonance centered at about 5 eV and a broad 2A1 C–H kσ* resonance at about 10 eV were detected in our calculation. Further calculations of DCS were performed at an intermediate energy range of 50–800 eV, using the independent-atom model in which the atomic complex optical potential and partial-wave method were used to obtain atomic scattering amplitudes. In conclusion, comparisons of our experimental and theoretical data with very recent experimental and theoreticalmore » results are made.« less

Authors:
 [1];  [1];  [2]; ORCiD logo [1];  [3];  [4];  [3];  [3];  [3]; ORCiD logo [3]
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  1. California State Univ. (CalState), Fullerton, CA (United States)
  2. California State Univ. (CalState), Fullerton, CA (United States); Gdańsk University of Technology, Gdańsk (Poland)
  3. Univ. Federal de São Carlos, São Carlos, SP (Brazil)
  4. Texas A & M Univ., College Station, TX (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1580358
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Physics. B, Atomic, Molecular and Optical Physics
Additional Journal Information:
Journal Volume: 52; Journal Issue: 2; Journal ID: ISSN 0953-4075
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS

Citation Formats

Hlousek, B. A., Martin, M. F., Zawadzki, M., Khakoo, M. A., Machado, L. E., Lucchese, R. R., da Mata, V. A. S., Iga, I., Lee, M-T, and Homem, M. G. P. Low to intermediate energy elastic electron scattering from dichloromethane (CH 2 Cl 2 ). United States: N. p., 2018. Web. doi:10.1088/1361-6455/aaf2f4.
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Hlousek, B. A., Martin, M. F., Zawadzki, M., Khakoo, M. A., Machado, L. E., Lucchese, R. R., da Mata, V. A. S., Iga, I., Lee, M-T, & Homem, M. G. P. Low to intermediate energy elastic electron scattering from dichloromethane (CH 2 Cl 2 ). United States. https://doi.org/10.1088/1361-6455/aaf2f4
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Hlousek, B. A., Martin, M. F., Zawadzki, M., Khakoo, M. A., Machado, L. E., Lucchese, R. R., da Mata, V. A. S., Iga, I., Lee, M-T, and Homem, M. G. P. Wed . "Low to intermediate energy elastic electron scattering from dichloromethane (CH 2 Cl 2 )". United States. https://doi.org/10.1088/1361-6455/aaf2f4. https://www.osti.gov/servlets/purl/1580358.
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@article{osti_1580358,
title = {Low to intermediate energy elastic electron scattering from dichloromethane (CH 2 Cl 2 )},
author = {Hlousek, B. A. and Martin, M. F. and Zawadzki, M. and Khakoo, M. A. and Machado, L. E. and Lucchese, R. R. and da Mata, V. A. S. and Iga, I. and Lee, M-T and Homem, M. G. P.},
abstractNote = {We report a theoretical-experimental investigation of electron scattering by dichloromethane (CH2Cl2) in the low- and intermediate energy ranges. Experimental elastic differential cross sections (DCS), in the incident electron energy range of 0.5–800 eV and scattering angle range of 10°–130°, were measured using a crossed beam relative flow technique. Integral and momentum-transfer cross sections were determined from the experimental DCS. Theoretical elastic differential, integral, and momentum-transfer, as well as grand-total, and total absorption cross sections were also calculated for impact energies ranging from 0.5 to 500 eV. A complex optical Hartree–Fock potential represented the electron-target interaction and a single-center expansion method combined with a Padé approximation was used to solve the scattering equations. Three resonances: a 2A1 C–Cl kσ* resonance centered at about 3.5 eV, a 2B2 C–Cl kσ* resonance centered at about 5 eV and a broad 2A1 C–H kσ* resonance at about 10 eV were detected in our calculation. Further calculations of DCS were performed at an intermediate energy range of 50–800 eV, using the independent-atom model in which the atomic complex optical potential and partial-wave method were used to obtain atomic scattering amplitudes. In conclusion, comparisons of our experimental and theoretical data with very recent experimental and theoretical results are made.},
doi = {10.1088/1361-6455/aaf2f4},
journal = {Journal of Physics. B, Atomic, Molecular and Optical Physics},
number = 2,
volume = 52,
place = {United States},
year = {Wed Dec 19 00:00:00 EST 2018},
month = {Wed Dec 19 00:00:00 EST 2018}
}
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    Works referencing / citing this record:

    Total cross section measurements for electron scattering from dichloromethane
    journal, December 2018

    • Lozano, A. I.; Álvarez, L.; Blanco, F.
    • The Journal of Chemical Physics, Vol. 149, Issue 24
    • DOI: 10.1063/1.5080636
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