An experimental and theoretical investigation into positron and electron scattering from formaldehyde

Antonio Zecca, E Trainotti, Luca Chiari, Gustavo Garcia, Francisco Blanco, Marcio Bettega, Marcio Varella, Marco Lima, Michael Brunger

    Research output: Contribution to journalArticle

    21 Citations (Scopus)

    Abstract

    We report on measurements of total cross sections (TCSs) for positron scattering from the fundamental organic molecule formaldehyde (CH2O). The energy range of these measurements was 0.26-50.3 eV, whereas the energy resolution was ∼260 meV. To assist us in interpreting these data, Schwinger multichannel level calculations for positron elastic scattering from CH 2O were also undertaken (0.5-50 eV). These calculations, incorporating an accurate model for the target polarization, are found to be in good qualitative agreement with our measured data. In addition, in order to compare the behaviour of positron and electron scattering from this species, independent atom model-screened additivity rule theoretical electron TCSs, now for energies in the range 1-10 000 eV, are also reported.

    Original languageEnglish
    Article number195202
    Pages (from-to)195202-1-195202-8
    Number of pages8
    JournalJournal of Physics B-Atomic Molecular and Optical Physics
    Volume44
    Issue number19
    DOIs
    Publication statusPublished - 2011

    Fingerprint Dive into the research topics of 'An experimental and theoretical investigation into positron and electron scattering from formaldehyde'. Together they form a unique fingerprint.

  • Cite this

    Zecca, A., Trainotti, E., Chiari, L., Garcia, G., Blanco, F., Bettega, M., Varella, M., Lima, M., & Brunger, M. (2011). An experimental and theoretical investigation into positron and electron scattering from formaldehyde. Journal of Physics B-Atomic Molecular and Optical Physics, 44(19), 195202-1-195202-8. [195202]. https://doi.org/10.1088/0953-4075/44/19/195202