Elsevier

Nuclear Physics A

Volume 419, Issue 3, 14 May 1984, Pages 557-570
Nuclear Physics A

Excited states of the 70Ga nucleus

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Abstract

The γ-spectrum of the 70Zn(p. nγ)70Ga reaction was measured with Ge(Li) spectrometers at proton bombarding energies of 3, 3.5 and 4 MeV. 47 γ-rays were assigned to 70Ga and the energies (Eγ) and relative intensities (Iγ) of γ-rays were determined. The electron spectrum of the reaction was measured with high-transmission superconducting-magnet-transporter Si(Li) and mini-orange Si(Li) spectrometers. Internal conversion coefficients were determined for eight 70Ga transitions. The level scheme of 70Ga, γ-branching ratios, multipolarity of transitions, level spins and parities were deduced. The energies of low-lying 70Ga levels were calculated on the basis of the parabolic rule derived from the cluster-vibration model. This calculation provided a simple classification of several multiplet states in 70Ga for the first time.

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    Supported by US National Science Foundation under Grant YOR 80/001.

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