Abstract: A thulium oxide-containing mixture consisting of a matrix material in which the thulium oxide is homogeneously distributed and forms therewith a body, which can be radioactivated by exposure to neutron radiation.

Abstract: In an apparatus for the doping of vessel supports (stents) with radioactive and non-radioactive atoms comprising an electron-cyclotron-ion-source (ECRIS) with an arrangement for extracting an ion beam from the ECRIS, a magnetic separation device for the splitting of the ion beam arranged in a downstream area of the extracted ion beam and an irradiation chamber in which the vessel supports are exposed to the selected partial ion beam, the ECRIS includes a microwave-permeable plasma chamber with a magnetic, six-pole arrangement, an electrically conductive tube portion disposed within the plasma chamber co-axially with the six-pole arrangement and having an in-coupling opening and also being axially movable for an adjustment of an optimal in-coupling and a co-axial cable extends through the in-coupling opening and has an outer sleeve which is in electrical contact and an inner conductor which is electrically insulated and forms at the inner wall of the tube a flat loop whose end is in contact with the tube wall.

Abstract: A caster wherein an upright stub carries a swivel bearing for an inverted U-shaped frame having legs which support the shaft for a wheel. The shaft is movable sideways in elongated horizontal slots of the legs in response to depression or lifting of a pedal which is pivotably connected to the legs. The pedal has two arms which flank the legs of the frame and are provided with substantially S-shaped slots crossing the slots of the adjacent legs and receiving portions of the shaft. When the pedal is depressed, the wheel frictionally engages and displaces a plate-like brake member which is vertically movably mounted in the legs of the frame and can be moved into direct frictional engagement with that part of the bearing which is non-rotatably connected to the stub.