TY - JOUR
T1 - Evidence for population of highly asymmetric states in double-electron capture by O7,8+ and N7+ colliding with He at low to intermediate velocities
AU - Wu, W.
AU - Giese, J. P.
AU - Chen, Z.
AU - Ali, R.
AU - Cocke, C. L.
AU - Richard, P.
AU - Stöckli, M.
PY - 1994
Y1 - 1994
N2 - Electron capture by O7,8+ and N7+ in collisions with He at 0.21.7 a.u. was investigated using coincident recoil momentum spectroscopy. The Q values and angular differential cross sections for single capture, transfer ionization (TI), and double capture (DC) were measured. Our Q-value measurements indicate that the electrons are captured into less tightly bound states with increasing collision velocity. The Q values and angular differential cross sections for DC and TI by O8+ are approximately the same, while those for DC and TI by O7+ and N7+ differ significantly. Our analysis indicates that the population of very asymmetric states (n=2, n>10) is necessary to explain this difference.
AB - Electron capture by O7,8+ and N7+ in collisions with He at 0.21.7 a.u. was investigated using coincident recoil momentum spectroscopy. The Q values and angular differential cross sections for single capture, transfer ionization (TI), and double capture (DC) were measured. Our Q-value measurements indicate that the electrons are captured into less tightly bound states with increasing collision velocity. The Q values and angular differential cross sections for DC and TI by O8+ are approximately the same, while those for DC and TI by O7+ and N7+ differ significantly. Our analysis indicates that the population of very asymmetric states (n=2, n>10) is necessary to explain this difference.
UR - http://www.scopus.com/inward/record.url?scp=0012867927&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.50.502
DO - 10.1103/PhysRevA.50.502
M3 - Article
AN - SCOPUS:0012867927
SN - 1050-2947
VL - 50
SP - 502
EP - 510
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 1
ER -