Sample changer for transferring radioactive samples between a hot cell and a measuring apparatus

A hybrid K-edge densitometer measuring facility including a hot cell with an adapter flange;

• a hybrid K-edge densitometer located outside said hot cell;
• and
• a sample changer for transferring radioactive samples between said hot cell and said hybrid K-edge densitometer;
• said sample changer comprising:
• a tubular containment having a charging/discharging port to be introduced into said hot cell, a transfer section, which extends into said hybrid K-edge densitometer, a measuring window section to be traversed by a measuring beam inside said hybrid K-edge densitometer, and an closed rear end section located at said opposite end of said charging/discharging port;
• a recipient with at least one compartment for receiving therein a radioactive sample, said recipient being arranged in a transfer channel extending axially through said tubular containment between said charging/discharging port and said measuring window section;
• a threaded spindle rotatably housed in a spindle channel ranged in said tubular containment below said transfer channel, said threaded spindle extending between said charging/discharging port and said measuring window section;
• a stepping motor located at the outside of said tubular containment;
• a coupling connecting said stepping motor to said threaded spindle, said coupling passing sealingly throb said closed rear end section;
• and
• a longitudinally guided support carriage, which is supporting said recipient in said transfer channel, said support carriage engaging said threaded spindle so as to be subjected to a translational movement upon rotation of said spindle.