⁵⁶Fe-Iron

 
56Fe has 26 protons and 30 neutrons.
56Fe is a stable isotope.
The mass excess of 56Fe is -60607.163 with an uncertainty of ±0.268.


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

Influence				 Equations

	 49.2%		           55Mn(p, γ)56Fe 1 
	 22.9%		          56Fe-85Rb0.659 2 
	 11.6%			    56Fe(n, γ)57Fe 3 








Reference

1. R. Friedrich, M. Kiessling, G. Otto (1969) γ-Zerfall von Isobar-Analog-Zustanden im Fe56
 Annalen der Physik  478(3-4) 
 https://onlinelibrary.wiley.com/doi/10.1002/andp.19694780307

2. W.J. Huang, D. Atanasov, G. Audi, K. Blaum, R.B. Cakirli, A. Herlert, M. Kowalska, S. Kreim, Yu. A. Litvinov, D. Lunney, V. Manea, M. Mougeot, M. Rosenbusch, L. Schweikhard, A. Welker, F. Wienholtz, R.N. Wolf, K. Zuber(2019) 
Evaluation of high-precision atomic masses of A ~ 50-80 and rare-earth nuclides measured with ISOLTRAP  The European Physical Journal  55(96) 
 https://link.springer.com/article/10.1140/epja/i2019-12775-5

3. P. Spilling, H. Gruppelaar, H.F. de Vries, A.M.J. Spits (1968) The reactions 12C(n, γ)13C and 19F(n, γ)20F
Nuclear Physics A  113(2)
 https://www.sciencedirect.com/science/article/pii/0375947468904144