Selenium-75 sources are
available in cylindrical and quasi-spherical focals, permitting shorter SFDs and greater
sensitivity on fixed geometries.
Source Model : A424-25W
Half Life : 120 Days
Energies : 97-401 KeV
Steel Working Range : .32 in to 1.18 in (8 mm to 30 mm)
Available for projector: Sentinel 880 Series, GammaMat SE