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Direct experimental...
Direct experimental evidence for a multiparticle-hole ground state configuration of deformed Mg-33
- Article/chapterEnglish2016
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2016
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electronicrdacarrier
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LIBRIS-ID:oai:research.chalmers.se:33826690-a036-4d1c-8ae0-27a22cf73a9c
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https://doi.org/10.1103/PhysRevC.94.034304DOI
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https://research.chalmers.se/publication/243405URI
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Language:English
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Summary in:English
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Subject category:art swepub-publicationtype
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Subject category:ref swepub-contenttype
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The first direct experimental evidence of a multiparticle-hole ground state configuration of the neutron-rich Mg-33 isotope has been obtained via intermediate energy (400 A MeV) Coulomb dissociation measurement. The major part similar to(70 +/- 13)% of the cross section is observed to populate the excited states of Mg-32 after the Coulomb breakup of Mg-33. The shapes of the differential Coulomb dissociation cross sections in coincidence with different core excited states favor that the valence neutron occupies both the s(1/2) and p(3/2) orbitals. These experimental findings suggest a significant reduction and merging of sd-pf shell gaps at N similar to 20 and 28. The ground state configuration of Mg-33 is predominantly a combination of Mg-32(3.0,3.5MeV; 2(-), 1(-)) circle times nu(s1/2), Mg-32(2.5MeV; 2(+)) circle times nu(p3/2), and Mg-32(0; 0(+)) circle times nu(p3/2). The experimentally obtained quantitative spectroscopic information for the valence neutron occupation of the s and p orbitals, coupled with different core states, is in agreement with Monte Carlo shell model (MCSM) calculation using 3 MeV as the shell gap at N = 20.
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Rahaman, A.
(author)
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Aumann, T.
(author)
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Beceiro-Novo, S.
(author)
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Boretzky, K.
(author)
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Caesar, C.
(author)
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Carlson, B. V.
(author)
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Catford, W. N.
(author)
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Chakraborty, S.
(author)
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Chartier, M.
(author)
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Cortina-Gil, D.
(author)
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de Angelis, G.
(author)
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Diaz Fernandez, Paloma,1983
(author)
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Emling, H.
(author)
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Ershova, O.
(author)
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Fraile, L. M.
(author)
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Geissel, H.
(author)
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Gonzalez-Diaz, D.
(author)
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Jonson, Björn,1941Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)bjn
(author)
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Johansson, Håkan T,1977Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)f96hajo
(author)
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Kalantar-Nayestanaki, N.
(author)
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Kroll, T.
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Krucken, R.
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Kurcewicz, J.
(author)
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Langer, C.
(author)
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Le Bleis, T.
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Leifels, Y.
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Marganiec, J.
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Munzenberg, G.
(author)
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Najafi, M. A.
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Nilsson, Thomas,1965Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)tnilsson
(author)
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Nociforo, C.
(author)
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Panin, V.
(author)
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Paschalis, S.
(author)
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Plag, R.
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Reifarth, R.
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Ricciardi, V.
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Rossi, D.
(author)
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Scheit, H.
(author)
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Scheidenberger, C.
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Simon, H.
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Taylor, J. T.
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Togano, Y.
(author)
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Typel, S.
(author)
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Volkov, V.
(author)
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Wagner, A.
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Wamers, F.
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Weick, H.
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Weigand, M.
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Winfield, J. S.
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Yakorev, D.
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Zoric, M.
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Chalmers tekniska högskola
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In:Physical Review C94:32469-99852469-9993
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Datta, U.
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Rahaman, A.
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Aumann, T.
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Beceiro-Novo, S.
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Boretzky, K.
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Caesar, C.
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Carlson, B. V.
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Catford, W. N.
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Chakraborty, S.
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Chartier, M.
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Cortina-Gil, D.
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de Angelis, G.
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Diaz Fernandez, ...
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Emling, H.
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Ershova, O.
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Fraile, L. M.
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Jonson, Björn, 1 ...
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Kroll, T.
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Krucken, R.
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Kurcewicz, J.
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Langer, C.
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Le Bleis, T.
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Leifels, Y.
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Marganiec, J.
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Munzenberg, G.
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Najafi, M. A.
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Nilsson, Thomas, ...
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Nociforo, C.
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Panin, V.
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Paschalis, S.
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Reifarth, R.
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Ricciardi, V.
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Rossi, D.
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Scheit, H.
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Simon, H.
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Taylor, J. T.
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Wamers, F.
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