An attempt to detect the artificial production of V 0 - particles by high-energy photons

Abstract

The beam of γ -rays produced by the large betatron built in Urbana by D. Kerst and his collaborators has been used to investigate the possibility of producing V -particles artificially, γ -rays produced on a metal target (see figure 47) were collimated by a suitable arrangement of lead screens to define a beam having an annular cross-section. The intensity of the γ -rays was 7000 R min -1 at a distance of 1 m from the source, corresponding to 1.14 x 10 11 quanta cm -2 min -1 .