209Bi-Bismuth
209Bi has 83 protons and 126 neutrons.
209Bi is a stable isotope.
The mass excess of 209Bi is -18258.589 with an uncertainty of ±1.365.
The mass was measured using Nuclear Physics and the related equations include:
Influence Equations
85.8% 209Bi(n, γ)210Bi 1
9.5% 209Bi(α)205Tl 2
4.3% 209Pb(β-)209Bi 3
Reference
1. H.T. Motz, E.T. Jurney, E.B. Shera, R.K. Sheline (1971) Low-Lying Configurations in 210Bi
Physical Review Letters 26(14)
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.26.854
2. P. de Marcillac, N. Coron, G. Dambier, J. Leblanc, J.-P. Moalic (2003) Experimental detection of α-particles from the radioactive decay of natural bismuth
Nature (Great Britain) 422(876-878)
https://www.nature.com/articles/nature01541
3. H. Behrens, M. Kobelt, W.G. Thies, H. Appel (1972) The first forbidden beta decay of 209Pb
Zeitschrift fur Physik 252(349-361)
https://link.springer.com/article/10.1007/BF01387305