Random phase approximation with exchange for the photoionization of confined atoms: Xe in C_{60} fullerene

Details Random phase approximation with exchange for the photoionization of confined atoms: Xe in C_{60} fullerene Random phase approximation with exchange for the photoionization of confined atoms: Xe in C_{60} fullerene

2008-11-13

arxiv.org/abs/0811.2185v2

Physics

Atomic Physics

10 pages, 6 figures

Scientific paper

10.1103/PhysRevA.77.042703

Photoionization of a Xe atom confined inside C$_{60}$ has been studied using the random phase approximation with exchange (RPAE) method. The C$_{60}$ fullerene has been descr ibed by an attractive short range spherical well with potential $V(r)$, given by $V(r)=-V_ 0$ for $r_ir_0$ have been obtained by solving the Schr\"{o}dinger equation using both regular and irregular solutions and the continuous boundary conditions at $r_i$ and $r_0$. The photoionization cross sections for the Xe 4d, $5s$ and $5p$ ele ctrons in the Xe@C$_{60}$ endohedral molecule have been evaluated and compared with those of the photoionization for the free Xe atom and other previo us calculations for the Xe@C$_{60}$ fullerene. Our method surmounted the weaknesses of the previous model potential calculation s and demonstrated significantly stronger correlated confinement resonances for the Xe@C$_{60}$ photoionization.

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