TY - JOUR
T1 - Two-electron photoionization of endohedral atoms
AU - Amusia, M. Ya
AU - Liverts, E. Z.
AU - Mandelzweig, V. B.
PY - 2006
Y1 - 2006
N2 - Using He@ C60 as an example, we demonstrate that the static potential of the fullerene core essentially alters the cross section of the two-electron ionization differential in one-electron energy d σ++ (ω) dε. We found that at high photon energy prominent oscillations appear in it due to reflection of the second slow electron wave on the C60 shell, which "dies out" at relatively high ε values, of about 2-3 two-electron ionization potentials. The results were presented for ratios R C60 (ω,ε) d σ++ (ω,ε) d σa++ (ω,ε), where d σa++ (ω,ε) dε is the two-electron differential photoionization cross section. We have calculated the ratio Ri,ful = σi ++ (ω) σi a++ (ω), that accounts for reflection of both photoelectrons by the C60 shell. We have also calculated the value of two-electron photoionization cross section σ++ (ω) and found that this value is close to that of an isolated He atom. Results similar to He@ C60 are presented for He@ C70 and He@ C76.
AB - Using He@ C60 as an example, we demonstrate that the static potential of the fullerene core essentially alters the cross section of the two-electron ionization differential in one-electron energy d σ++ (ω) dε. We found that at high photon energy prominent oscillations appear in it due to reflection of the second slow electron wave on the C60 shell, which "dies out" at relatively high ε values, of about 2-3 two-electron ionization potentials. The results were presented for ratios R C60 (ω,ε) d σ++ (ω,ε) d σa++ (ω,ε), where d σa++ (ω,ε) dε is the two-electron differential photoionization cross section. We have calculated the ratio Ri,ful = σi ++ (ω) σi a++ (ω), that accounts for reflection of both photoelectrons by the C60 shell. We have also calculated the value of two-electron photoionization cross section σ++ (ω) and found that this value is close to that of an isolated He atom. Results similar to He@ C60 are presented for He@ C70 and He@ C76.
UR - http://www.scopus.com/inward/record.url?scp=33750015519&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.74.042712
DO - 10.1103/PhysRevA.74.042712
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AN - SCOPUS:33750015519
SN - 1050-2947
VL - 74
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 4
M1 - 042712
ER -