Abstract
The Ar 40 ( p ,γ)K 41 reaction has been studied in the range of proton energies from 750 Kev to 1450 Kev using a thin Ar 40 target prepared by a method of electromagnetic mass separation. 66 excited levels in K 41 were observed. Gamma-rays from the reaction Ar 40 ( p ,γ)K 41 have been studied at the six resonances occurring at E p =1091, 1106, 1112, 1123, 1311 and 1391 Kev by the use of a NaI crystal scintillation spectrometer. In the nucleus K 41 , levels at 0.98, 1.29, 1.58 and 8.5∼9.2 Mev were observed. Spins of 1.58, 8.864 and 8.879 Mev levels were assigned to be 3/2, 5/2 and 3/2, respectively from the angular distributions of gamma-rays.
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