Isotopic abundance 11.5(1)%

Ground state properties:
&mu = -970669(3) nm
Q = 0.26(3) b

Excited state properties:
E = 9.4053(8) keV
E_R = 5.7267(5) 10^-4 eV
&mu = -0.943(2) nm
Q = 0.495(10) b
T_1/2 = 154.4(11) ns
W = 0.188(8) mm/s

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Unit Conversion:
1mm/s = 7.5859(6) MHz
1mm/s = 3.13727(3) 10^-8eV