High-accuracy relativistic many-body calculations of van der Waals coefficients C 6 for alkaline-earth-metal atoms

High-accuracy relativistic many-body calculations of van der Waals coefficients C 6 for alkaline-earth-metal atoms
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碱土金属原子范德华系数 C 6 的高精度相对论多体计算

DOI:
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发表时间:
2001
期刊:
影响因子:
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通讯作者:
A. Derevianko
A. Derevianko
中科院分区:
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文献类型:
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作者:
S. Porsev;A. Derevianko

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用相对论多体方法计算了碱土金属两个基态原子在大核间距下的范德华系数C6。结果表明:C6=214(3),627(12),2221(15),3170(196),5160(74)。
Relativistic many-body calculations of van der Waals coefficients C 6 for dimers correlating to two ground-state alkaline-earth-metal atoms at large internuclear separations are reported. The following values and uncertainties were determined: C 6 = 214(3) for Be, 627(12) for Mg, 2221(15) for Ca, 3170(196) for Sr, and 5160(74) for Ba in atomic units.