M1 decay of the 2 <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>3</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="italic">S</mi></mrow><mrow><mn>1</mn></mrow></msub></mrow></math> state in heliumlike krypton

S. Cheng; R. W. Dunford; C. J. Liu; B. J. Zabransky; A. E. Livingston; L. J. Curtis

doi:10.1103/PhysRevA.49.2347

M1 decay of the 2 ${}^{3}$ $S_{1}$ state in heliumlike krypton

S. Cheng, R. W. Dunford, C. J. Liu, B. J. Zabransky, A. E. Livingston, and L. J. Curtis

Phys. Rev. A 49, 2347 – Published 1 April 1994

Abstract

We report a measurement of the lifetime of the 2 ${}^{3}$ $S_{1}$ state in two-electron krypton. The lifetime is found to be 171.0±2.2 ps, which is in reasonable agreement with current theoretical calculations. This measurement provides a test of the order (Zα $)^{2}$ relativistic corrections to this lifetime.