Abstract
First experiments on the transmutation of long-lived129I and237Np using relativistic protons of 3.7 GeV are described. Relativistic protons generate in extended Pb-targets substancial neutron fluences. These neutrons get moderated in paraffin and are used for transmutation as follows:129I(n,γ)130Iβ→ and237Np(n,γ)238Npβ→. The isotopes130I (T 1/2-12.36 h) and238Np (T 1/2=2.117 d) were identified radiochemically. One can estimate the transmutation cross-section (n,γ) in the given neutron field as σ(129I(n,γ))=(10±2)b and σ(237Np(n,γ))=(140±30)b The experiments were carried out in November 1996 at the Synchrophasotron, LHE, Dubna, Russia. The investigation has been performed at the Laboratory of High Energies, JINR, Dubna.
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Krivopustov, M.I., Adam, J., Bradnova, V. et al. First experiments on transmutation studies of129I and237Np using relativistic protons of 3.7 GeV. J Radioanal Nucl Chem 222, 267–270 (1997). https://doi.org/10.1007/BF02034284
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DOI: https://doi.org/10.1007/BF02034284