An arrangement for mechanical and electrical contacting of an incandescent wire of a thermal radiation source, comprising:
- an incandescent wire made of refractory metal having at least one flat connection surface to be contacted, the at least one flat connection surface having a surface and an circumferential edge;
- a contact surface on which the incandescent wire is contacted;
- and
- a contacting medium which joins the incandescent wire to the contact surface,
- wherein the at least one flat connection surface has sites including at least one of:
- at least two perforations in the surface or at least two cutouts in the circumferential edge,
- wherein the contacting medium is joined to the contact surface with an atomic-level join at the sites and, through a flange-like configuration of the contacting medium above the at least one flat connection surface of the incandescent wire at the sites, forms both an electrical and a mechanical connection with the incandescent wire.