TY - JOUR
T1 - An experimental and theoretical investigation into positron and electron scattering from formaldehyde
AU - Zecca, Antonio
AU - Trainotti, E
AU - Chiari, Luca
AU - Garcia, Gustavo
AU - Blanco, Francisco
AU - Bettega, Marcio
AU - Varella, Marcio
AU - Lima, Marco
AU - Brunger, Michael
PY - 2011
Y1 - 2011
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=80053155923&partnerID=8YFLogxK
U2 - 10.1088/0953-4075/44/19/195202
DO - 10.1088/0953-4075/44/19/195202
M3 - Article
SN - 0953-4075
VL - 44
SP - 195202-1-195202-8
JO - Journal of Physics B-Atomic Molecular and Optical Physics
JF - Journal of Physics B-Atomic Molecular and Optical Physics
IS - 19
M1 - 195202
ER -