The Nuclear Excitation of Krypton and Rhodium

Kr83* has been produced by the direct x-ray bombardment of the element as well as from Kr⁸² by the n-γ process. A study of the nuclear spectrum of Rh¹⁰³ by x-ray excitation gave values of 1.26±{}, 0.03 Mev, 1.64, 2.02, 2.37, 2.71, and 3.05 for the higher nuclear states which combine with the metastable level. Measurements of the absorption of the conversion electrons in gas indicate that the energy of the metastable state is 40 Kev about the ground level. It was found that Rh103* can also be produced by the direct bombardment of rhodium with electrons.