Serial sources:57Co active part is prepared by electrodeposition of high-purity carrier-free 57Co onto a thin (thickness: 6 µm or less, diameter: 4-8 mm) metal matrix followed with controlled annealing process. Standard matrix is R-m. Active part is placed into titanium alloy holder with brazed beryllium window and sealed with laser welding. In case of ordering a source for liquid Helium temperature application additional notification is required.
Point sources: The source is a beryllium capsule with active part inside, inserted into a titanium alloy holder. The holder is a single-piece element with truncated cone shaped front end and threaded tail piece. Source active part is a metal matrix with thermally diffused 57Co isotope. Source tightness is achieved by glued and welded joints. Point sources are not suitable for use at liquid Helium temperature.