A hybrid spark chamber for measuring radionuclide distributions

This paper describes the operational characteristics of a hybrid spark chamber designed to improve the instability of self-triggering spark chambers for measuring radionuclide distributions. The chamber consists of a parallel plate spark chamber and a parallel plate proportional chamber in the same gas space. This construction of the chamber enables one to obtain good counting plateaus, that is, good stability, and high spatial resolution for the incidence of minimum ionizing β-rays. (Auth.)