Precision measurement of the 3<span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="italic">s</mi></mrow><mrow><mn>1</mn><mo>/</mo><mn>2</mn></mrow></msub></mrow></math></span>-3<span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="italic">p</mi></mrow><mrow><mn>3</mn><mo>/</mo><mn>2</mn></mrow></msub></mrow></math></span> transition energy in Na-like platinum ions

T. E. Cowan; C. L. Bennett; D. D. Dietrich; J. V. Bixler; C. J. Hailey; J. R. Henderson; D. A. Knapp; M. A. Levine; R. E. Marrs; M. B. Schneider

doi:10.1103/PhysRevLett.66.1150

Precision measurement of the 3 $s_{1 / 2}$ -3 $p_{3 / 2}$ transition energy in Na-like platinum ions

T. E. Cowan, C. L. Bennett, D. D. Dietrich, J. V. Bixler, C. J. Hailey, J. R. Henderson, D. A. Knapp, M. A. Levine, R. E. Marrs, and M. B. Schneider

Phys. Rev. Lett. 66, 1150 – Published 4 March 1991

Abstract

We report a measurement of the 3 $s_{1 / 2 -}$ 3 $p_{3 / 2}$ transition energy in Na-like ${}_{78}{Pt}^{67 +}$ ions of 653.44±0.02(stat) ±0.05(syst) eV. The x rays were observed from ions in an electron-beam ion trap. The uncertainty in our result corresponds to 1% of the total estimated quantum electrodynamic radiative contribution to this transition energy. This value differs significantly from extrapolations based on previous lower-Z data, and establishes a benchmark for calculations of high-Z multielectron radiative and relativistic effects.