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  1. Artikel ; Online: Towards the Limits of Existence of Nuclear Structure: Observation and First Spectroscopy of the Isotope ^{31}K by Measuring Its Three-Proton Decay.

    Kostyleva, D / Mukha, I / Acosta, L / Casarejos, E / Chudoba, V / Ciemny, A A / Dominik, W / Dueñas, J A / Dunin, V / Espino, J M / Estradé, A / Farinon, F / Fomichev, A / Geissel, H / Gorshkov, A / Grigorenko, L V / Janas, Z / Kamiński, G / Kiselev, O /
    Knöbel, R / Krupko, S / Kuich, M / Litvinov, Yu A / Marquinez-Durán, G / Martel, I / Mazzocchi, C / Nociforo, C / Ordúz, A K / Pfützner, M / Pietri, S / Pomorski, M / Prochazka, A / Rymzhanova, S / Sánchez-Benítez, A M / Scheidenberger, C / Simon, H / Sitar, B / Slepnev, R / Stanoiu, M / Strmen, P / Szarka, I / Takechi, M / Tanaka, Y K / Weick, H / Winkler, M / Winfield, J S / Xu, X / Zhukov, M V

    Physical review letters

    2019  Band 123, Heft 9, Seite(n) 92502

    Abstract: The most remote isotope from the proton dripline (by 4 atomic mass units) has been observed: ^{31}K. It is unbound with respect to three-proton (3p) emission, and its decays have been detected in flight by measuring the trajectories of all decay products ...

    Abstract The most remote isotope from the proton dripline (by 4 atomic mass units) has been observed: ^{31}K. It is unbound with respect to three-proton (3p) emission, and its decays have been detected in flight by measuring the trajectories of all decay products using microstrip detectors. The 3p emission processes have been studied by the means of angular correlations of ^{28}S+3p and the respective decay vertices. The energies of the previously unknown ground and excited states of ^{31}K have been determined. This provides its 3p separation energy value S_{3p} of -4.6(2)  MeV. Upper half-life limits of 10 ps of the observed ^{31}K states have been derived from distributions of the measured decay vertices.
    Sprache Englisch
    Erscheinungsdatum 2019-09-19
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.123.092502
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  2. Artikel ; Online: Observation and Spectroscopy of New Proton-Unbound Isotopes ³⁰Ar and ²⁹Cl: An Interplay of Prompt Two-Proton and Sequential Decay.

    Mukha, I / Grigorenko, L V / Xu, X / Acosta, L / Casarejos, E / Ciemny, A A / Dominik, W / Duénas-Díaz, J / Dunin, V / Espino, J M / Estradé, A / Farinon, F / Fomichev, A / Geissel, H / Golubkova, T A / Gorshkov, A / Janas, Z / Kamiński, G / Kiselev, O /
    Knöbel, R / Krupko, S / Kuich, M / Litvinov, Yu A / Marquinez-Durán, G / Martel, I / Mazzocchi, C / Nociforo, C / Ordúz, A K / Pfützner, M / Pietri, S / Pomorski, M / Prochazka, A / Rymzhanova, S / Sánchez-Benítez, A M / Scheidenberger, C / Sharov, P / Simon, H / Sitar, B / Slepnev, R / Stanoiu, M / Strmen, P / Szarka, I / Takechi, M / Tanaka, Y K / Weick, H / Winkler, M / Winfield, J S / Zhukov, M V

    Physical review letters

    2015  Band 115, Heft 20, Seite(n) 202501

    Abstract: Previously unknown isotopes (30)Ar and (29)Cl have been identified by measurement of the trajectories of their in-flight decay products (28)S+p+p and (28)S+p, respectively. The analysis of angular correlations of the fragments provided information on ... ...

    Abstract Previously unknown isotopes (30)Ar and (29)Cl have been identified by measurement of the trajectories of their in-flight decay products (28)S+p+p and (28)S+p, respectively. The analysis of angular correlations of the fragments provided information on decay energies and the structure of the parent states. The ground states of (30)Ar and (29)Cl were found at 2.25(-0.10)(+0.15) and 1.8±0.1  MeV above the two- and one-proton thresholds, respectively. The lowest states in (30)Ar and (29)Cl point to a violation of isobaric symmetry in the structure of these unbound nuclei. The two-proton decay has been identified in a transition region between simultaneous two-proton and sequential proton emissions from the (30)Ar ground state, which is characterized by an interplay of three-body and two-body decay mechanisms. The first hint of a fine structure of the two-proton decay of (30)Ar*(2(+)) has been obtained by detecting two decay branches into the ground and first-excited states of the (28)S fragment.
    Sprache Englisch
    Erscheinungsdatum 2015-11-13
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.115.202501
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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    Verfügbar in ZB MED Bonn

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    Fernleihe an ZB MED

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