Np
Neptunium-237m
Protons (Z)
93
Neutrons (N)
144
Mass number
237
Half-Life
710.0 ns
Abundance
---
Mass
237.049 u
Mass Excess
45,816.8 keV
Spin
13/2-
Discovered
1990
Binding energy per nucleon
7,571 keV
Neutron separation energy
5,635 keV
Proton separation energy
3,917 keV
Decay Mode
- γ→Neptunium-237100%
Decay chain
- NpNeptunium-237Z 93 · N 144710.0 ns
- γ100%
- α~100%
- β⁻100%
- α~100%
- α100%
- β⁻100%
- α~100%
- α~100%
- α99.992%
- β⁻97.91%
- α100%
- β⁻100%
- α100%