TY - JOUR
T1 - Positronium formation in methanol and ethanol
AU - Coleman, Paul
AU - Culver, N. J.
AU - Dowler, B. M. W.
PY - 2013/1/31
Y1 - 2013/1/31
N2 - Cross sections for the formation of positronium (Ps) in collisions of positrons with methanol and ethanol molecules, QPs, have been measured for positrons of incident energies from 3 to 40 eV. The threshold energies for Ps formation were found to be 4.0 ± 0.2 eV and 3.5 ± 0.5 eV, respectively. QPs for the two molecules are very similar in size and energy dependence, suggesting that Ps formation is associated preferentially with the OH group, whereas (Qtot–QPs), where Qtot is the total scattering cross section, is related more to the physical size of the molecules.
AB - Cross sections for the formation of positronium (Ps) in collisions of positrons with methanol and ethanol molecules, QPs, have been measured for positrons of incident energies from 3 to 40 eV. The threshold energies for Ps formation were found to be 4.0 ± 0.2 eV and 3.5 ± 0.5 eV, respectively. QPs for the two molecules are very similar in size and energy dependence, suggesting that Ps formation is associated preferentially with the OH group, whereas (Qtot–QPs), where Qtot is the total scattering cross section, is related more to the physical size of the molecules.
UR - http://www.scopus.com/inward/record.url?scp=84873162941&partnerID=8YFLogxK
UR - http://dx.doi.org/10.1103/PhysRevA.87.012712
U2 - 10.1103/PhysRevA.87.012712
DO - 10.1103/PhysRevA.87.012712
M3 - Article
SN - 1050-2947
VL - 87
JO - Physical Review A: Atomic, Molecular, and Optical Physics
JF - Physical Review A: Atomic, Molecular, and Optical Physics
IS - 1
M1 - 012712
ER -