TY - JOUR
T1 - Energy dependence of the (e,2 e) recoil peak to binary peak ratio across He (2 p 2) 1 D and (2 s 2 p) 1 P autoionizing levels
AU - Deharak, B. A.
AU - Bartschat, K.
AU - Martin, N. L.S.
PY - 2014/9/1
Y1 - 2014/9/1
N2 - The (e,2e) recoil peak to binary peak ratio as a function of the ejected-electron energy is reported for helium autoionizing levels (2p2)1D and (2s2p)1P. A special out-of-plane geometry is used where the ejected electrons are detected in a plane that includes the momentum transfer axis but is perpendicular to the scattering plane. The measured recoil peak to binary peak ratio is a dimensionless quantity that can be directly compared with calculations. A second-order model in the projectile-target interaction correctly reproduces the observed energy dependence and magnitude of the ratio, while a first-order model does not.
AB - The (e,2e) recoil peak to binary peak ratio as a function of the ejected-electron energy is reported for helium autoionizing levels (2p2)1D and (2s2p)1P. A special out-of-plane geometry is used where the ejected electrons are detected in a plane that includes the momentum transfer axis but is perpendicular to the scattering plane. The measured recoil peak to binary peak ratio is a dimensionless quantity that can be directly compared with calculations. A second-order model in the projectile-target interaction correctly reproduces the observed energy dependence and magnitude of the ratio, while a first-order model does not.
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U2 - 10.1103/PhysRevA.89.012702
DO - 10.1103/PhysRevA.89.012702
M3 - Article
AN - SCOPUS:84892542041
SN - 1050-2947
VL - 89
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 1
M1 - 012702
ER -