Speaker
Robert Chehab
Description
Crystal effects and especially channeling radiation are interesting, instead of bremsstrahlung, to provide a large number of photons,for positron generation in converters This work is describing the choice , more and more, spread , of axially oriented crystals in channeling conditions to provide such amount of photons . Emphasis is put on a particular scheme, the hybrid source, associating a crystal-radiator to an amorphous converter. The development of this scheme since the first proposal is described.
