Spectroscopy of 7He and superheavy hydrogen isotope 5H
M. S. GolovkovRIKEN, Hirosawa 2-1, Wako, Saitama, 351-01, JapanA. A. KorsheninnikovRIKEN, Hirosawa 2-1, Wako, Saitama, 351-01, JapanI. TanihataRIKENDmitry BogdanovJoint Institute for Nuclear Research, Dubna, Moscow oblast, 141980, RussiaM. L. ChelnokovJoint Institute for Nuclear Research, Dubna, Moscow oblast, 141980, RussiaА. С. ФомичевJoint Institute for Nuclear Research, Dubna, Moscow oblast, 141980, RussiaV. A. GorshkovJoint Institute for Nuclear Research, Dubna, Moscow oblast, 141980, RussiaYu. Ts. OganessianJoint Institute for Nuclear Research, Dubna, Moscow oblast, 141980, RussiaА. М. РодинJoint Institute for Nuclear Research, Dubna, Moscow oblast, 141980, RussiaS. I. SidorchukJoint Institute for Nuclear Research, Dubna, Moscow oblast, 141980, RussiaS. V. StepantsovJoint Institute for Nuclear Research, Dubna, Moscow oblast, 141980, RussiaG. M. Ter–AkopianJoint Institute for Nuclear Research, Dubna, Moscow oblast, 141980, RussiaR. WolskiJoint Institute for Nuclear Research, Dubna, Moscow oblast, 141980, RussiaW. MittigJoint Institute for Nuclear Research, Dubna, Moscow oblast, 141980, RussiaP. Roussel‐ChomazGANIL, BP 5027, F-14021, Caen Cedex, FranceH. SavajolsGANIL, BP 5027, F-14021, Caen Cedex, FranceE. A. KuzminJoint Institute for Nuclear Research, Dubna, Moscow oblast, 141980, RussiaE. Yu. NikolskiiRussian Research Centre Kurchatov Institute, pl. Kurchatova 1, Moscow, 123182, RussiaB.G. NovatskiiJoint Institute for Nuclear Research, Dubna, Moscow oblast, 141980, RussiaA. A. OgloblinRussian Research Centre Kurchatov Institute, pl. Kurchatova 1, Moscow, 123182, Russia
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The neutron-transfer reaction d(6He, p)7He is investigated. The data obtained show that, in the range between 1 and 7 MeV above its ground-state resonance, 7He does not have well-pronounced narrow excited states with a single-particle structure. A resonance state of 5H with an energy of 2 MeV above the n+n+3H decay threshold is obtained for the first time by making use of the reaction p(6He, 2He)5H.
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