Prof. S. LAKSHMINARAYANA
Department Of Nuclear Physics, Andhra University, Vizag-530003, AP, India.
Nuclear planck energy is given by
where Gs is the strong nuclear gravitational constant [1, 2, 3] and is equal to N²Gc.
Here N is Avagadro number and GC is the classical gravitational constant.
In the previous paper  it is suggested that there exists 2 kinds of mass units.
They are observed and hidden mass units and their mass ratio is XE = 295.0606338.
XE can be called as the lepton-quark mass generator [1 - 4].
In this paper this idea is applied to the nucleons.
Hidden mass unit of nucleon can be given as
It is noticed that there exists an intermediate hidden mass state in between neutron and proton.
If nuclear stability factor is defined as
hidden mass of the intermediate state can be given as
Observable mass of this hidden intermediate state can be given as
If mec² is the rest energy of electron, this observable intermediate state gains a mass-energy of ½mec² and transforms to neutron.
By loosing a mass-energy of 2mec² transforms to proton.
Error is related with
Here Ec and Ea are the semi emepirical mass formula [1, 3, 15, 16, 17] coulomb and asymmetry energy constants.
Finally it is suggested that pairing energy constant of the semi empirical mass formula is
Asymmetry energy constant
Ec, Ea are related with XE as
Volume and surface energy constants are related as