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Isospin triplet A=12: search for states with enhanced radii

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dc.contributor.authorDemyanova, A. S.
dc.contributor.authorDanilov, A. N.
dc.contributor.authorOgloblin, A. A.
dc.contributor.authorStarastsin, V. I.
dc.contributor.authorGurov, Y. B.
dc.contributor.authorГуров, Юрий Борисович
dc.date.accessioned2024-11-27T17:08:17Z
dc.date.available2024-11-27T17:08:17Z
dc.date.issued2020
dc.description.abstractTwo independent methods: Asymptotic Normalization Coefficients (ANC) and Modified Diffraction Model (MDM) were applied to new and existing experimental data to search for states with enhanced radii in isobaric analogue states (IAS) of B-12 and N-12. The ANC analysis of the B-11(d,p) B-12 reaction at E-d = 21.5 MeV has confirmed neutron halo existence for two states of B-12: 2(-), 1.67 MeV and 1(-), 2.62 MeV [1] Some new results were obtained for higher excited states: halo-like states were observed for 0(+), 2.72 MeV and 3(-), 3.39 MeV states. It should be mentioned that the last one is unbound state, which is 19 keV above the neutron emission threshold and in both states last neutron has a non-zero orbital momentum (1(n) =1 and 1(n) =2, correspondingly). We propose to use MDM to study isobaric analogue states of B-12 in the mirror N-12 nucleus and apply it to analyze the (He-3,t) reaction data. The existing in the literature data are not completed enough to make definite conclusion about halo in the 2(-) and 1(-) states of N-12. This fact simulated us to carry out a new experiment on the C-12(He-3,t) N-12 reaction at the end of 2018. The measurements were conducted at the University of Jyvaskyla (Finland) using the K130 cyclotron to produce a He-3 beam at E(He-3)=40 MeV. The differential cross sections of the C-12(He-3,t)N-12 reaction were measured in the c.m. angular range 8 degrees-70 degrees. Preliminary results for angular distributions are obtained. MDM analysis of preliminary (He-3,t) experimental data is done.
dc.identifier.citationIsospin triplet A=12: search for states with enhanced radii / Demyanova, AS [et al.] // 27TH INTERNATIONAL NUCLEAR PHYSICS CONFERENCE (INPC2019). - 2020. - 1643. - 10.1088/1742-6596/1643/1/012079
dc.identifier.doi10.1088/1742-6596/1643/1/012079
dc.identifier.urihttps://www.doi.org/10.1088/1742-6596/1643/1/012079
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000686763400079
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/23210
dc.relation.ispartof27TH INTERNATIONAL NUCLEAR PHYSICS CONFERENCE (INPC2019)
dc.titleIsospin triplet A=12: search for states with enhanced radii
dc.typeProceedings Paper
dspace.entity.typePublication
oaire.citation.volume1643
relation.isAuthorOfPublication3fe8a761-d18d-4898-885f-7c5fec92951e
relation.isAuthorOfPublication.latestForDiscovery3fe8a761-d18d-4898-885f-7c5fec92951e
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