Structurally, the sources are sealed stainless steel capsules with an active part placed inside. The active part contains a radionuclide hermetically fixed between two polyimide films with a thickness of 50 μm. The active part is placed in a recess of the lid and is closed by an inner lid, which is a stainless steel disc 0.1 mm thick. The inner lid is laser welded to the lid. The cover is welded to the source body. In this way, a double containment of the source is achieved.
|Radionuclide||D × H, mm||d, mm||Nominal activity *||Code|
|137Cs **||10.0 × 1.27||3.0||0.00027 - 0.27||0.01 - 10.0||GCs7.38.1|
|137Cs **||10.0 × 5.0||3.0||0.00027 - 0.27||0.01 - 10.0||GCs7.38.2|
|60Co||10.0 × 1.27||3.0||0.0027 - 0.135||0.1 - 5.0||GCo0.38.1|
|60Co||10.0 × 5.0||3.0||0.0027 - 0.135||0.1 - 5.0||GCo0.38.2|
|22Na||10.0 × 1.27||3.0||0.0027 - 0.27||0.1 - 10.0||GNa2.38.1|
|22Na||10.0 × 5.0||3.0||0.0027 - 0.27||0.1 - 10.0||GNa2.38.2|
|241Am||10.0 × 1.27||3.0||0.000135 - 0.008||0.005 - 0.3||GAm1.38.1|
|241Am||10.0 × 5.0||3.0||0.000135 - 0.008||0.005 - 0.3||GAm1.38.2|
|* Tolerance: -10 ÷ +20 %.
** Part of Cs-134: no more than 1 %.
ISO classification: C66545.
Recommended working life: 10 years.
Sources of other activity and in housings of other types can be supplied by special order.