dorsal/arxiv
View SchemaElectron screening in molecular fusion reactions
| Authors | T. D. Shoppa, M. Jeng, S. E. Koonin, K. Langanke, R. Seki |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9512041 |
| URL | https://arxiv.org/abs/nucl-th/9512041 |
| DOI | 10.1016/0375-9474(96)00183-2 |
| Journal | Nucl.Phys. A605 (1996) 387-402 |
Abstract
Recent laboratory experiments have measured fusion cross sections at center-of-mass energies low enough for the effects of atomic and molecular electrons to be important. To extract the cross section for bare nuclei from these data (as required for astrophysical applications), it is necessary to understand these screening effects. We study electron screening effects in the low-energy collisions of Z=1 nuclei with hydrogen molecules. Our model is based on a dynamical evolution of the electron wavefunctions within the TDHF scheme, while the motion of the nuclei is treated classically. We find that at the currently accessible energies the screening effects depend strongly on the molecular orientation. The screening is found to be larger for molecular targets than for atomic targets, due to the reflection symmetry in the latter. The results agree fairly well with data measured for deuteron collisions on molecular deuterium and tritium targets.
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"abstract": "Recent laboratory experiments have measured fusion cross sections at\ncenter-of-mass energies low enough for the effects of atomic and molecular\nelectrons to be important. To extract the cross section for bare nuclei from\nthese data (as required for astrophysical applications), it is necessary to\nunderstand these screening effects. We study electron screening effects in the\nlow-energy collisions of Z=1 nuclei with hydrogen molecules. Our model is based\non a dynamical evolution of the electron wavefunctions within the TDHF scheme,\nwhile the motion of the nuclei is treated classically. We find that at the\ncurrently accessible energies the screening effects depend strongly on the\nmolecular orientation. The screening is found to be larger for molecular\ntargets than for atomic targets, due to the reflection symmetry in the latter.\nThe results agree fairly well with data measured for deuteron collisions on\nmolecular deuterium and tritium targets.",
"arxiv_id": "nucl-th/9512041",
"authors": [
"T. D. Shoppa",
"M. Jeng",
"S. E. Koonin",
"K. Langanke",
"R. Seki"
],
"categories": [
"nucl-th"
],
"doi": "10.1016/0375-9474(96)00183-2",
"journal_ref": "Nucl.Phys. A605 (1996) 387-402",
"title": "Electron screening in molecular fusion reactions",
"url": "https://arxiv.org/abs/nucl-th/9512041"
},
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