Abstract

Bombardment of B10 with 1.4 Mev. deuterons has been found to produce gamma rays of energy 4.46 ±.04, 4.75 ±.03, 5.03 ±.09, 5.35 ±.05, 6.52 ±.04, 6.78 ±.07, 7.29 ±.04, 8.27 ±.09, and 8.87 ±.02 Mev., as measured with a three-crystal pair spectrometer. Tentative assignments to transitions in B11 and C11 agree well in most cases with the known energy level schemes. No gamma rays of very high energy were observed, even with a single-crystal spectrometer; consequently an upper limit of 10−31 cm.2 has been placed on the cross-section of B10(d, γ)C12 at 0.95 Mev. bombarding energy.

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