204Pb-Lead
204Pb has 82 protons and 122 neutrons.
204Pb is a stable isotope.
The mass excess of 204Pb is -25109.815 with an uncertainty of ±1.147.
The mass was measured using Nuclear Physics and the related equations include:
Influence Equations
69.8% 204Pb(n, γ)205Pb 1
24.6% 204Tl(β-)204Pb 2
4% 208Po(α)204Pb 3
Reference
1. P. Hungerford, T. von Egidy, H.H. Schmidt, S.A. Kerr, H.G. Borner, E. Monnand (1983) Neutron binding and excitation energies of some Pb isotopes
Zeitschrift fur Physik A Atoms and Nuclei 313
https://link.springer.com/article/10.1007/BF01439488
2. J.J.H. Park, P. Christmas (1967) Electron Spectra in the Decay of Thallium-204
Canadian Journal of Physics 45(8)
https://cdnsciencepub.com/doi/abs/10.1139/p67-212
3. N.A. Golovkov, S. Guetch, B.S. Dzelepov, Yu. V. Norseev, V.A. Chalkin, V.G. Shumin (1969) Fine Structure of the Alpha-Particle Spectra of 209At, 210At,
211At, and 211Po Izvestiya Akademii Nauk SSSR, seriya Fizicheskaya
https://www.osti.gov/biblio/4090506