$^{6}H$ states studied in the $^{2}H ( ^{8}He , ^{4}He)$ reaction and evidence of an extremely correlated character of the $^{5}H$ ground state
- Nikolskii, E. Yu.
- Muzalevskii, I. A.
- Grigorenko, L. V.
- Kaminski, G.
- Khirk, M.
- Kiselev, O.
- Kostyleva, D. A.
- Kozlov, M. Yu.
- Mauyey, B.
- Mukha, I.
- Parfenova, Yu. L.
- Piatek, W.
- Bezbakh, A. A.
- Quynh, A. M.
- Schetinin, V. N.
- Serikov, A.
- Sidorchuk, S. I.
- Sharov, P. G.
- Shulgina, N. B.
- Slepnev, R. S.
- Stepantsov, S. V.
- Swiercz, A.
- Szymkiewicz, P.
- Chudoba, V.
- Ter-Akopian, G. M.
- Wolski, R.
- Zalewski, B.
- Zhukov, M. V.
- Krupko, S. A.
- Belogurov, S. G.
- Biare, D.
- Fomichev, A. S.
- Gazeeva, E. M.
- Gorshkov, A. V.
DOIAbstract
The extremely neutron-rich system $^{6}$H was studied in the direct $^2\text{H}(^8\text{He},{^4\text{He}})^{6}$H transfer reaction with a $26 A$ MeV secondary $^{8}$He beam. The measured missing mass spectrum shows a broad bump at $\sim 4-8$ MeV above the $^3$H+$3n$ decay threshold. This bump can be interpreted as a broad resonant state in $^{6}$H at $6.8(5)$ MeV. The population cross section of such a presumably $p$-wave state (or may be few overlapping states) in the energy range from 4 to 8 MeV is $d\sigma/d\Omega_{\text{c.m.}} \simeq 190^{+40}_{-80}$ $\mu$b/sr in the angular range $5^{\circ}<\theta_{\text{c.m.}}<16^{\circ}$. The obtained missing mass spectrum is practically free of the $^{6}$H events below 3.5 MeV ($d\sigma/d\Omega_{\te...
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