Hyperfine Structure Of The (3s3d)D-3(J) Manifold Of Mg-25 I

Based on spectroscopy of the ( 3s3p) 3P0-( 3s3d) 3D1 Mg I transitions for the stable isotopes 24Mg( I = 0), 25Mg ( I = 5/ 2), and 26Mg ( I = 0) we report measurements of the 25Mg ( 3s3d) 3DJ hyperfine coefficients A( 3D1) = 141 7, A( 3D2) = - 59 6, and A( 3D3) = - 97 3 MHz. We find the hyperfine coefficients in agreement with state- of- the- art theoretical predictions presented here giving A( 3D1) = 143.3 1.4, A( 3D2) = - 48.3 0.5, and A( 3D3) = - 96 1 MHz. We also reportmeasurements of the isotope shifts for the investigated transitions 24- 25 = 6 9 and 24- 26 = 59.7 0.5 MHz, significantly reducing the uncertainty compared to previous measurements.