¹⁹⁰Os-Osmium

 
190Os has 76 protons and 114 neutrons.
190Os is a stable isotope.
The mass excess of 190Os is -38707.825 with an uncertainty of ±0.65.


The mass was measured using a Penning Trap and Nuclear Physics and the related equations include:

Influence				 Equations

           51.6%	   	           190Os-194Pt0.979 1 
       29.5%	   	           190Os-190Pt 1 
           18.2%	   	           189Os(n, γ)190Os 2 
            	 









Reference

1. M. Eibach, G. Bollen, K. Gulyuz, C. Izzo, M. Redshaw, R. Ringle, R. Sandler, A.A. Valverde (2016) Double resonant enhancement in the neutrinoless double-electron capture of 190Pt
 Physical Review C  94(1)
https://journals.aps.org/prc/abstract/10.1103/PhysRevC.94.015502

2. R.F. Casten, M.R. MacPhail, W.R. Kane, D. Breitig, K. Schreckenbach, J.A. Cizewski (1979) Levels and γ-ray transitions in 190Os, a perturbed O(6) nucleus
 Nuclear Physics A  316(1-2)
https://www.sciencedirect.com/science/article/pii/0375947479906730