Fine structure of helium and light helium-like ions

Abstract

Calculational results are presented for the fine-structure splitting of the 2^3P state of helium and helium-like ions with the nuclear charge Z up to 10. Theoretical predictions are in agreement with the latest experimental results for the helium fine-structure intervals as well as with the most of the experimental data available for light helium-like ions. Comparing the theoretical value of the 2^3P_0-2^3P_1 interval in helium with the experimental result [T. Zelevinsky et al. Phys. Rev. Lett. 95, 203001 (2005)], we determine the value of the fine-structure constant αwith an accuracy of 31 parts per billion.

proceedings of the PSAS2010 conference. One misprinted digit in Table I is corrected

References in corpus (4)

• CODATA Recommended Values of the Fundamental Physical Constants: 2010
• Combination of Bloch oscillations with a Ramsey-Bordé interferometer : new determination of the fine structure constant
• Fine structure of helium-like ions and determination of the fine structure constant
• Improved theory of helium fine structure

Cited by in corpus (3)

• CODATA Recommended Values of the Fundamental Physical Constants: 2010
• Ultrahigh-precision measurement of the $n=2$ triplet P fine structure of atomic helium using frequency-offset separated oscillatory fields
• Unexpectedly large difference of the electron density at the nucleus in the 4p ${}^2$P${}_{1/2,3/2}$ fine-structure doublet of Ca${}^{+}$