Look Up Calculated One-Proton and
Two-Proton Separation Energies

Enter proton number Z:

Enter mass number A:

Look up S1p and S2p:

Downloading the proton separation-energy data file

The entire data file of calculated one-proton separation energies S1p and two-proton separation energies S2p may be downloaded here The format of the file is, in FORTRAN notation (2I5,2f10), and each record contains:

Z, N, S1p (MeV), S2p (MeV)

If the proton separation energy can not be calculated because the ground-state masses required for the determination were not calculated then the value -20000.00 is listed.

ryxm@lanl.gov, moller@lanl.gov
Created April 1996, last modified December 2011