منابع مشابه
Electron Compton scattering from methane and methane-d4
Quasi-elastic electron scattering at high-momentum transfer was measured for CH4 and CD4 in the gas phase. At high-momentum transfer, wo scattering peaks are observed in each molecule. We interpret the splitting as due to independent Compton scattering from each nucleus, such hat, at an impact energy of 2 keV and 100◦ scattering angle, the peaks for the C and H in CH4 are split by 2.1 eV while ...
متن کاملLow energy positron scattering from helium
Positron scattering from helium has been historically limited to experiments with energy resolution of 0.5 eV or worse. A new apparatus has been developed that allows the investigation of scattering processes with an energy resolution as good as 30 meV, allowing new experimental insight into positron helium interactions. High resolution measurements of low energy scattering from helium will be ...
متن کاملElectron and positron scattering from 1,1-C2H2F2.
1,1-difluoroethylene (1,1-C2H2F2) molecules have been studied for the first time experimentally and theoretically by electron and positron impact. 0.4-1000 eV electron and 0.2-1000 eV positron impact total cross sections (TCSs) were measured using a retarding potential time-of-flight apparatus. In order to probe the resonances observed in the electron TCSs, a crossed-beam method was used to inv...
متن کاملQuasielastic electron scattering from methane, methane-d4, methane-d2, ethylene, and 2-methylpropane.
Quasielastic electron scattering from gaseous species at high momentum transfer was recently reported for the first time [Cooper et al., J. Electron Spectrosc. Relat. Phenom. 155, 28 (2007)]. The first results for CH(4) and CD(4) were well explained by a classical electron Compton scattering picture in which the electron scatters independently from each atom rather than the molecule as a whole....
متن کاملElastic electron scattering from methane at high momentum transfer
We describe elastic electron scattering data at high momentum transfer (between ≈20 and ≈40 au) from methane and Xe. Under these conditions there is a significant recoil energy transferred to the target and electrons scattered elastically from methane are separated into two peaks: one due to electrons scattered from carbon, and one due to electrons scattered from hydrogen. The separation of the...
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ژورنال
عنوان ژورنال: Physical Review A
سال: 2012
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.85.012707