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A Study of the 12C(p,3He)10B Reaction at 185 MeV Using a Spark Chamber Detector

Differential cross sections for the reaction 12C(p,3He)10B at 185 MeV have been measured in the angular region 4° to 20°. The momentum analysis of the 3He particles was performed in a magnetic spectrometer. A spark chamber with current distribution read-out was used as a detector, and it was triggered by pulses from a scintillation telescope. An overall energy resolution of about 350 keV was obtained in the energy spectra. The angular distributions of the cross section were all peaked in the forward direction.