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Recent results related to excited states of 6Be and 10He

A.S. Fomichev ; A.A. Bezbakh ; V. Chudoba ; I.A. Egorova ; S.N. Ershov ; M.S. Golovkov ; A.V. Gorshkov ; L.V. Grigorenko ; P. Jalůvková ; G. Kamiński ; S.A. Krupko ; E.A. Kuzmin ; E.Y. Nikolskii ; I.G. Mukha ; Y.L. Parfenôva ; P.G. Sharov ; S.I. Sidorchuk ; R.S. Slepnev ; S.V. Stepantsov ; G.M. Ter-Akopian ; R. Wolski ; Mikhail V. Zhukov (Institutionen för fundamental fysik, Subatomär fysik) ; A.A. Yukhimchuk ; S.V. Filchagin ; A.A. Kirdyashkin ; I.P. Maksimkin ; O.P. Vikhlyantsev
6th International Conference on Nuclear Structure and Related Topics, NSRT 2012; Dubna; Russian Federation; 3 July 2012 through 7 July 2012 (2101-6275). Vol. 38 (2012), p. Art. no. 15002.
[Konferensbidrag, refereegranskat]

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 (T ∼ 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- (E T ∼ 5 MeV) and 2+ (ET > 6 MeV).

Denna post skapades 2013-09-11. Senast ändrad 2016-07-12.
CPL Pubid: 183064


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Institutioner (Chalmers)

Institutionen för fundamental fysik, Subatomär fysik (2005-2013)



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