137Ba-Barium
137Ba has 56 protons and 81 neutrons.
137Ba is a stable isotope.
The mass excess of 137Ba is -87721.401 with an uncertainty of ±0.248.
The mass was measured using Nuclear Physics and the related equations include:
Influence Equations
67.2% 136Ba(n, γ)137Ba 1
32.8% 137Ba(n, γ)138Ba 2
Reference
1. L.V. Groshev, V.N. Dvoretskii, A.M. Demidov, M.S. Alvash (1969) Radiation of Even-Odd Nuclei Near the Magic Number N = 82 After Thermal Neutron Capture
Yadernaya Fizika 10
https://www.osti.gov/biblio/4738155
2. M.A.J. Mariscotti, W. Gelletly, J.A. Moragues, W.R. Kane (1968) 137Ba(n, γ) Reaction and Level Structure of 138Ba
Physical Review 174(4)
https://journals.aps.org/pr/abstract/10.1103/PhysRev.174.1485