| Popis: |
A liquid hydrogen target has been constructed for use in the measurement of low cross section reactions with a single detected charged particle in the final state, for example p(n, d)γ, n(p, d)π 0 or p(p, d)π + . It uses thin plastic scintillation counters mounted close to the target container, in contact with a cold gas cell between the liquid hydrogen and an insulation vacuum. Pulse height information from these counters allows background events originating in most of the windows of the target assembly to be eliminated. The design and operational characteristics of the target are described. |
