dorsal/arxiv
View SchemaHigh-precision calculations of electric-dipole amplitudes for transitions between low-lying levels of Mg, Ca, and Sr
| Authors | S. G. Porsev, M. G. Kozlov, Yu. G. Rakhlina, A. Derevianko |
|---|---|
| Categories | |
| ArXiv ID | physics/0102070 |
| URL | https://arxiv.org/abs/physics/0102070 |
| DOI | 10.1103/PhysRevA.64.012508 |
Abstract
To support efforts on cooling and trapping of alkaline-earth atoms and designs of atomic clocks, we performed ab initio relativistic many-body calculations of electric-dipole transition amplitudes between low-lying states of Mg, Ca, and Sr. In particular, we report amplitudes for ^1P_1 --> ^1S_0, ^3S_1, ^1D_2$, for ^3P_1 --> ^1S_0, ^1D_2, and for ^3P_2 --> ^1D_2 transitions. For Ca, the reduced matrix element <4s4p, ^1P_1 ||D|| 4s^2, ^1S_0> is in a good agreement with a high-precision experimental value deduced from photoassociation spectroscopy [Zinner et al., Phys.Rev.Lett., v.85, 2292 (2000)]. An estimated uncertainty of the calculated lifetime of the (3s3p ^1P_1) state of Mg is a factor of three smaller than that of the most accurate experiment. Calculated binding energies reproduce experimental values within 0.1-0.2%.
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"abstract": "To support efforts on cooling and trapping of alkaline-earth atoms and\ndesigns of atomic clocks, we performed ab initio relativistic many-body\ncalculations of electric-dipole transition amplitudes between low-lying states\nof Mg, Ca, and Sr. In particular, we report amplitudes for ^1P_1 --\u003e ^1S_0,\n^3S_1, ^1D_2$, for ^3P_1 --\u003e ^1S_0, ^1D_2, and for ^3P_2 --\u003e ^1D_2 transitions.\nFor Ca, the reduced matrix element \u003c4s4p, ^1P_1 ||D|| 4s^2, ^1S_0\u003e is in a good\nagreement with a high-precision experimental value deduced from\nphotoassociation spectroscopy [Zinner et al., Phys.Rev.Lett., v.85, 2292\n(2000)]. An estimated uncertainty of the calculated lifetime of the (3s3p\n^1P_1) state of Mg is a factor of three smaller than that of the most accurate\nexperiment. Calculated binding energies reproduce experimental values within\n0.1-0.2%.",
"arxiv_id": "physics/0102070",
"authors": [
"S. G. Porsev",
"M. G. Kozlov",
"Yu. G. Rakhlina",
"A. Derevianko"
],
"categories": [
"physics.atom-ph"
],
"doi": "10.1103/PhysRevA.64.012508",
"title": "High-precision calculations of electric-dipole amplitudes for transitions between low-lying levels of Mg, Ca, and Sr",
"url": "https://arxiv.org/abs/physics/0102070"
},
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