91Zr-Zirconium
91Zr has 40 protons and 51 neutrons.
91Zr is a stable isotope.
The mass excess of 91Zr is -87895.592 with an uncertainty of ±0.095.
The mass was measured using a Penning Trap and Nuclear Physics and the related equations include:
Influence Equations
50.3% 91Zr(n, γ)92Zr 1
28.5% 91Zr-87Rb1.046 2
16.5% 91Zr-u 2
Reference
1. F. Braumandl, K. Schreckenbach, T. von Egidy (1979) Precision measurements of neutron binding energies of 28Al, 92Zr, 114Cd,
165Dy, 168Er, 200Hg, and 239U Nuclear Instruments and Methods 166(2)
https://www.sciencedirect.com/science/article/abs/pii/0029554X79905822
2. K. Gulyuz, J. Ariche, G. Bollen, S. Bustabad, M. Eibach, C. Izzo, S.J. Novario, M. Redshaw, R. Ringle, R. Sandler, S. Schwarz, A.A. Valverde (2015)
Determination of the direct double-β-decay Q value of 96Zr and atomic masses of 90-92,94,96Zr and 92,94-98,100Mo
Physical Review C 91(5)
https://journals.aps.org/prc/abstract/10.1103/PhysRevC.91.055501