TY - JOUR
T1 - Out-of-plane (e, 2e) experiments on helium L=0, 1, 2 autoionizing levels
AU - Deharak, B. A.
AU - Bartschat, K.
AU - Martin, N. L.S.
PY - 2008/2/11
Y1 - 2008/2/11
N2 - Out-of-plane (e, 2e) measurements are reported for the helium autoionizing levels (2s2)S1, (2p2)D1, (2s2p)P1, and for direct ionization. While the recoil peak almost vanishes in the angular distribution for direct ionization, it remains significant for the autoionizing levels and exhibits a characteristic shape for each orbital angular momentum L=0, 1, 2. A second-order model in the projectile-target interaction correctly reproduces the observed magnitudes of the recoil peaks, but is a factor of 2 too large in the central out-of-plane region.
AB - Out-of-plane (e, 2e) measurements are reported for the helium autoionizing levels (2s2)S1, (2p2)D1, (2s2p)P1, and for direct ionization. While the recoil peak almost vanishes in the angular distribution for direct ionization, it remains significant for the autoionizing levels and exhibits a characteristic shape for each orbital angular momentum L=0, 1, 2. A second-order model in the projectile-target interaction correctly reproduces the observed magnitudes of the recoil peaks, but is a factor of 2 too large in the central out-of-plane region.
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U2 - 10.1103/PhysRevLett.100.063201
DO - 10.1103/PhysRevLett.100.063201
M3 - Article
AN - SCOPUS:40749157869
SN - 0031-9007
VL - 100
JO - Physical Review Letters
JF - Physical Review Letters
IS - 6
M1 - 063201
ER -