71500 3575000 0.238
total flux:    1.147e+23  nyrs(with DF):  4.00  protons/yr:     1.97e+24
isotopes/proton:   0.01456  isotope_br:  1.00
beta-decay endpoint =   15.000 MeV
mass:     60.7  shield:    2.8  distance source to detector:   4.00  levt_max   9.092