The $^{8}$He and $^{10}$He spectra studied in the $(t$,$p)$ reaction

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dc.creatorGolovkov, M. S.
dc.creatorGrigorenko, L. V.
dc.creatorTer-Akopian, G. M.
dc.creatorFomichev, A. S.
dc.creatorOganessian, Yu. Ts.
dc.creatorGorshkov, V. A.
dc.creatorKrupko, S. A.
dc.creatorRodin, A. M.
dc.creatorSidorchuk, S. I.
dc.creatorSlepnev, R. S.
dc.creatorStepantsov, S. V.
dc.creatorWolski, R.
dc.creatorPang, D. Y.
dc.creatorChudoba, V.
dc.creatorKorsheninnikov, A. A.
dc.creatorKuzmin, E. A.
dc.creatorNikolskii, E. Yu.
dc.creatorNovatskii, B. G.
dc.creatorStepanov, D. N.
dc.creatorRoussel-Chomaz, P.
dc.creatorMittig, W.
dc.creatorNinane, A.
dc.creatorHanappe, F.
dc.creatorStuttge, L.
dc.creatorYukhimchuk, A. A.
dc.creatorPerevozchikov, V. V.
dc.creatorVinogradov, Yu. I.
dc.creatorGrishechkin, S. K.
dc.creatorZlatoustovskiy, S. V.
dc.date2008-04-02
dc.date.accessioned2026-07-07T12:35:58Z
dc.date.available2026-07-07T12:35:58Z
dc.descriptionThe low-lying spectra of $^8$He and $^{10}$He nuclei were studied in the $^3$H($^6$He,$p$)$^8$He and $^3$H($^8$He,$p$)$^{10}$He transfer reactions. The $0^+$ ground state (g.s.) of $^8$He and excited states, $2^+$ at $3.6-3.9$ MeV and $(1^+)$ at $5.3-5.5$ MeV, were populated with cross sections of 200, 100-250, and 90-125 $μ$b/sr, respectively. Some evidence for $^8$He state at about 7.5 MeV is obtained. We discuss a possible nature of the near-threshold anomaly above 2.14 MeV in $^8$He and relate it to the population of a $1^-$ continuum (soft dipole excitation) with peak value at about 3 MeV. The lowest energy group of events in the $^{10}$He spectrum was observed at $\sim 3$ MeV with a cross section of $\sim 140$ $μ$b/sr. We argue that this result is possibly consistent with the previously reported observation of $^{10}$He, in that case providing a new g.s. position for $^{10}$He at about 3 MeV.
dc.description18 pages, 8 figures, submitted to Phys. Lett. B
dc.identifierhttps://arxiv.org/abs/0804.0310
dc.identifierhttp://arxiv.org/abs/0804.0310
dc.identifierPhys.Lett.B672:22-29,2009
dc.identifierdoi:10.1016/j.physletb.2008.12.052
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/217939
dc.subjectNuclear Experiment
dc.titleThe $^{8}$He and $^{10}$He spectra studied in the $(t$,$p)$ reaction
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