Our 1-inch alpha, beta, and gamma sources are available in four source sets: S-7 (1 ea. alpha, 1 ea. beta, 1 ea. gamma), S-8 (1 ea. alpha, 2 ea. beta, 2 ea. gamma), S-13 (8 ea. gamma), and S-PTC (6 ea. gamma). The S-13 source set contains eight gamma sources and is especially well suited for scintillation spectroscopy experimentation requiring a wide range of gamma energies. All sets are packaged in sturdy plastic cases suitable for storage. The S-PTC source set contains six gamma sources designed for use with Genie 2000 to perform Peak-To-Total calibration for coincidence summing correction.

Model No.	Radionuclides	Activity	Half-Life	Radiation
S-7	Polonium-210 Strontium-90 Cobalt-60	0.1 µCi 0.1 µCi 1.0 µCi	138 d 28.5 y 5.27 y	alpha β β, γ
S-8	Polonium-210 Strontium-90 Cobalt-60 Thallium-204 Cesium-137	0.1 µCi 0.1 µCi 1.0 µCi 1.0 µCi 5.0 µCi	138 d 28.5 y 5.27 y 3.78 y 30.2 y	alpha β β, γ EC , β β, γ
S-13	Cobalt-57 Cobalt-60 Sodium-22 Manganese-54 Cesium-137 Barium-133 Cadmium-109 1 "unknown"	1.0 µCi 1.0 µCi 1.0 µCi. 1.0 µCi 1.0 µCi 1.0 µCi 1.0 µCi (mixture of Cesium-137 and Zinc-65)	271 d 5.27 y 2.6 y 312 d 30.2 y 10.5 y 464 d	EC , γ β, γ EC, β+, γ EC , γ β, γ EC , γ EC , γ β, EC, β+, γ
S-PTC	Cadmium-109 Cobalt-57 Cesium-137 Manganese-54 Tin-113 Zinc-65	1.0 µCi 1.0 µCi 1.0 µCi. 1.0 µCi 1.0 µCi 1.0 µCi	464 d 271 d 30.2 y 312 d 115 d 244 d	EC , γ EC, γ β, γ γ γ EC, γ