⁷⁸Se-Selenium

 
78Se has 34 protons and 44 neutrons.
78Se is a stable isotope.
The mass excess of 78Se is -77025.952 with an uncertainty of ±0.179.


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

Influence				 Equations

	   95.3%		              77Se(n, γ)78Se 1 
   3.5%		             78Kr-78Se 2 
	  0.6%			   80Se(p, t)78Se 3 

	






Reference

1. G. Engler, R.E. Chrien, H.I. Liou (1981) Thermal and resonance neutron capture studies in Se targets with A = 74,76,77,78,80
  Nuclear Physics A  372(1-2)
https://www.sciencedirect.com/science/article/pii/0375947481900919

2. Yadernaya Fizika 
	R.A. Demirkhanov, V.V. Dorokhov, M.I. Dzkuya, G.A. Dorokhova

3. J.D. Zumbro, A.A. Rollefson, R.W. Tarara, C.P. Browne (1982) Q values for proton and deuteron induced reactions on selenium targets
 Physical Review C  26(6)
https://journals.aps.org/prc/abstract/10.1103/PhysRevC.26.2668