engXu, X.-D.Mukha, I.Dunin, V.Espino, J. M.Estradé, A.Farinon, F.Fomichev, A.Geissel, H.Golubkova, T. A.Gorshkov, A.Janas, Z.Kamiński, G.Grigorenko, L. V.Kiselev, O.Knöbel, R.Krupko, S.Kuich, M.Litvinov, YuryMarquinez-Durán, G.Martel, I.Mazzocchi, C.Nociforo, C.Ordúz, A. K.Scheidenberger, ChristophPfützner, M.Pietri, S.Pomorski, M.Prochazka, A.Rymzhanova, S.Sánchez-Benítez, A. M.Sharov, P.Simon, H.Sitar, B.Slepnev, R.Acosta, L.Stanoiu, M.Strmen, P.Szarka, I.Takechi, M.Tanaka, Y. K.Weick, H.Winkler, M.Winfield, J. S.Casarejos, E.Chudoba, V.Ciemny, A. A.Dominik, W.Duénas-Díaz, J.Spectroscopy of excited states of unbound nuclei $^{30}$Ar and $^{29}$Clinfo:eu-repo/classification/ddc/530Several states of proton-unbound isotopes $^{30}$Ar and $^{29}$Cl were investigated by measuring their in-flight decay products, $^{28}$S+proton+proton and $^{28}$S+proton, respectively. A refined analysis of $^{28}$S-proton angular correlations indicates that the ground state of $^{30}$Ar is located at $2.45^{+0.05}_{-0.10}$ MeV above the two-proton emission threshold. The theoretical investigation of the $^{30}$Ar ground state decay demonstrates that its mechanism has the transition dynamics with a surprisingly strong sensitivity of the correlation patterns of the decay products to the two-proton decay energy of the $^{30}$Ar ground state and the one-proton decay energy as well as the one-proton decay width of the $^{29}$Cl ground state. The comparison of the experimental $^{28}$S-proton angular correlations with those resulting from Monte Carlo simulations of the detector response illustrates that other observed $^{30}$Ar excited states decay by sequential emission of protons via intermediate resonances in $^{29}$Cl. Based on the findings, the decay schemes of the observed states in $^{30}$Ar and $^{29}$Cl were constructed. For calibration purposes and for checking the performance of the experimental setup, decays of the previously-known states of a two-proton emitter $^{19}$Mg were remeasured. Evidences for one new excited state in $^{19}$Mg and two unknown states in $^{18}$Na were found.Physical review / C 97(3), 034305 (2018). doi:10.1103/PhysRevC.97.034305info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionInst.2018info:eu-repo/semantics/closedAccessDEhttps://repository.gsi.de/record/209735https://repository.gsi.de/search?p=id:%22GSI-2018-00491%22Researchersinfo:eu-repo/semantics/altIdentifier/issn/2469-9993info:eu-repo/semantics/altIdentifier/wos/WOS:000426630200001info:eu-repo/semantics/altIdentifier/issn/2469-9985info:eu-repo/semantics/altIdentifier/issn/0556-2813info:eu-repo/semantics/altIdentifier/issn/1089-490Xinfo:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevC.97.034305