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  1. Artikel ; Online: Recent results related to excited states of 6Be and 10He

    Wolski R. / Zhukov M. V. / Ter-Akopian G. M. / Stepantsov S. V. / Slepnev R. S. / Sidorchuk S. I. / Sharov P. G. / Parfenova Yu. L. / Mukha I. G. / Nikolskii E. Yu. / Kuzmin E. A. / Krupko S. A. / Kaminski G. / Jaluvkova P. / Grigorenko L. V. / Gorshkov A. V. / Golovkov M. S. / Ershov S. N. / Chudoba V. /
    Egorova I. A. / Bezbakh A. A. / Fomichev A. S. / Yukhimchuk A. A. / Filchagin S. V. / Kirdyashkin A. A. / Maksimkin I. P. / Vikhlyantsev O. P.

    EPJ Web of Conferences, Vol 38, p

    2012  Band 15002

    Abstract: The 1H(6Li, 6Be)n charge-exchange reaction and the 3H(8He,p)10He two-neutron transfer reaction were recently carried out at the ACCULINNA fragment separator (FLNR, Dubna) to populate the ground and excited states of 6Be and 10He nuclei, respectively. The ...

    Abstract The 1H(6Li, 6Be)n charge-exchange reaction and the 3H(8He,p)10He two-neutron transfer reaction were recently carried out at the ACCULINNA fragment separator (FLNR, Dubna) to populate the ground and excited states of 6Be and 10He nuclei, respectively. The 6Be ET spectrum (ET is the 6Be energy above its 4He+p+p decay threshold) was obtained with high statistics and described by the well-known 0+ ground state of 6Be at ET = 1.37 MeV, the 2+ state at ET = 3.05 MeV and a broad structure extending from 4 to 16 MeV which could be interpreted as the isovector soft dipole mode associated with the 6Li ground state. In the 10He case the 0+ ground state was found at about 2.1(2) MeV (Γ ~ 2 MeV) above the 8He+n+n breakup threshold. Angular correlations observed for 10He decay products show prominent interference patterns allowing to draw conclusions about the structure of low-energy excited states: 1-(ET ~ 5 MeV) and 2+ (ET ~ 6 MeV).
    Schlagwörter Physics ; QC1-999 ; Science ; Q ; DOAJ:Physics (General) ; DOAJ:Physics and Astronomy
    Thema/Rubrik (Code) 541
    Sprache Englisch
    Erscheinungsdatum 2012-12-01T00:00:00Z
    Verlag EDP Sciences
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  2. Artikel ; Online: Structure of 10He low-lying states uncovered by correlations.

    Sidorchuk, S I / Bezbakh, A A / Chudoba, V / Egorova, I A / Fomichev, A S / Golovkov, M S / Gorshkov, A V / Gorshkov, V A / Grigorenko, L V / Jalůvková, P / Kaminski, G / Krupko, S A / Kuzmin, E A / Nikolskii, E Yu / Oganessian, Yu Ts / Parfenova, Yu L / Sharov, P G / Slepnev, R S / Stepantsov, S V /
    Ter-Akopian, G M / Wolski, R / Yukhimchuk, A A / Filchagin, S V / Kirdyashkin, A A / Maksimkin, I P / Vikhlyantsev, O P

    Physical review letters

    2012  Band 108, Heft 20, Seite(n) 202502

    Abstract: The 0+ ground state of the 10He nucleus produced in the 3H(8He,p)10He reaction was found at about 2.1±0.2  MeV (Γ∼2  MeV) above the three-body ^{8}He+n+n breakup threshold. Angular correlations observed for ^{10}He decay products show prominent ... ...

    Abstract The 0+ ground state of the 10He nucleus produced in the 3H(8He,p)10He reaction was found at about 2.1±0.2  MeV (Γ∼2  MeV) above the three-body ^{8}He+n+n breakup threshold. Angular correlations observed for ^{10}He decay products show prominent interference patterns allowing us to draw conclusions about the structure of low-energy excited states. We interpret the observed correlations as a coherent superposition of a broad 1- state having a maximum at energy 4-6 MeV and a 2+ state above 6 MeV, setting both on top of the 0+ state "tail." This anomalous level ordering indicates that the breakdown of the N=8 shell known in 12Be thus extends also to the ^{10}He system.
    Sprache Englisch
    Erscheinungsdatum 2012-05-18
    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.108.202502
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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