⁶⁴Ni-Nickel

 
64Ni has 28 protons and 36 neutrons.
64Ni is a stable isotope.
The mass excess of 64Ni is -67099.034 with an uncertainty of ±0.463.


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

Influence				 Equations

	87.4%		              63Ni(n, γ)64Ni 1 
	12.6%		             64Ni-85Rb0.753 2 
	









Reference

1. W.M. Wilson, G.E. Thomas, H.E. Jackson (1975) Thermal neutron capture gamma rays from neutron capture in 59Ni and 63Ni
  Physical Review C  11(4)
https://journals.aps.org/prc/abstract/10.1103/PhysRevC.11.1477
	
2. C. Guenaut, G. Audi, D. Beck, K. Blaum, G. Bollen, P. Delahaye, F. Herfurth, A. Kellerbauer, H.-J. Kluge, J. Libert, D. Lunney, S. Schwarz, L. Schweikhard, C. Yazidjian (2007)
 High-precision mass measurements of nickel, copper, and gallium isotopes and the purported shell closure at N = 40  Physical Review C  75(4)
https://journals.aps.org/prc/abstract/10.1103/PhysRevC.75.044303