dorsal/arxiv
View SchemaTwo-electron photoionization of endohedral atoms
| Authors | M. Ya. Amusia, E. Z. Liverts, V. B. Mandelzweig |
|---|---|
| Categories | |
| ArXiv ID | physics/0603056 |
| URL | https://arxiv.org/abs/physics/0603056 |
| DOI | 10.1103/PhysRevA.74.042712 |
Abstract
Using $He@C_{60}$ as an example, we demonstrate that static potential of the fullerene core essentially alters the cross section of the two-electron ionization differential in one-electron energy $d\sigma ^{++}(\omega )/d\epsilon $. We found that at high photon energy prominent oscillations appear in it due to reflection of the second, slow electron wave on the $% C_{60}$ shell, which "dies out" at relatively high $\epsilon $ values, of about 2$\div $3 two-electron ionization potentials. The results were presented for ratios $R_{C_{60}}(\omega ,\epsilon)\equiv d\sigma ^{++}(\omega ,\epsilon)/d\sigma ^{a++}(\omega,\epsilon)$, where $d\sigma ^{a++}(\omega,\epsilon)/d\epsilon$ is the two-electron differential photoionization cross section. We have calculated the ratio $R_{i,ful}= \sigma_{i} ^{++}(\omega)/\sigma_{i}^{a++}(\omega)$, that accounts for reflection of both photoelectrons by the $C_{60}$ shell. We have calculated also the value of two-electron photoionization cross section $\sigma ^{++}(\omega)$ and found that this value is close to that of an isolated $He$ atom.
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"abstract": "Using $He@C_{60}$ as an example, we demonstrate that static potential of the\nfullerene core essentially alters the cross section of the two-electron\nionization differential in one-electron energy $d\\sigma ^{++}(\\omega\n)/d\\epsilon $. We found that at high photon energy prominent oscillations\nappear in it due to reflection of the second, slow electron wave on the $%\nC_{60}$ shell, which \"dies out\" at relatively high $\\epsilon $ values, of about\n2$\\div $3 two-electron ionization potentials. The results were presented for\nratios $R_{C_{60}}(\\omega ,\\epsilon)\\equiv d\\sigma ^{++}(\\omega\n,\\epsilon)/d\\sigma ^{a++}(\\omega,\\epsilon)$, where $d\\sigma\n^{a++}(\\omega,\\epsilon)/d\\epsilon$ is the two-electron differential\nphotoionization cross section. We have calculated the ratio $R_{i,ful}=\n\\sigma_{i} ^{++}(\\omega)/\\sigma_{i}^{a++}(\\omega)$, that accounts for\nreflection of both photoelectrons by the $C_{60}$ shell. We have calculated\nalso the value of two-electron photoionization cross section $\\sigma\n^{++}(\\omega)$ and found that this value is close to that of an isolated $He$\natom.",
"arxiv_id": "physics/0603056",
"authors": [
"M. Ya. Amusia",
"E. Z. Liverts",
"V. B. Mandelzweig"
],
"categories": [
"physics.atom-ph"
],
"doi": "10.1103/PhysRevA.74.042712",
"title": "Two-electron photoionization of endohedral atoms",
"url": "https://arxiv.org/abs/physics/0603056"
},
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