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Properties of the 7...
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Aksyutina, Yuliya,1983Chalmers tekniska högskola,Chalmers University of Technology
(author)
Properties of the 7He ground state from 8He neutron knockout
- Article/chapterEnglish2009
Publisher, publication year, extent ...
Numbers
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LIBRIS-ID:oai:gup.ub.gu.se/96136
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https://gup.ub.gu.se/publication/96136URI
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https://doi.org/10.1016/j.physletb.2009.07.044DOI
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https://research.chalmers.se/publication/96136URI
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https://research.chalmers.se/publication/509297URI
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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The unbound nucleus 7He, produced in neutron-knockout reactions with a 240 MeV/u 8He beam in a liquid-hydrogen target, has been studied in an experiment at the ALADIN-LAND setup at GSI. From an R-matrix analysis the resonance parameters for 7He as well as the spectroscopic factor for the 6He(0+) + n configuration in its ground-state have been obtained. The spectroscopic factor is 0.61 confirming that 7He is not a pure single-particle state. An analysis of 5He data from neutron-knockout reactions of 6He in a carbon target reveals the presence of an s-wave component at low energies in the α+n relative energy spectrum. A possible low-lying exited state in 7He observed in neutron knockout data from 8He in a carbon target and tentatively interpreted as a Iπ=1/2− state, could not be observed in the present experiment. Possible explanations of the shape difference between the 7He resonance obtained in the two knockout reactions are discussed in terms of target-dependence or different reaction mechanisms at relativistic energies.
Subject headings and genre
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Johansson, Håkan T,1977Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)f96hajo
(author)
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Aumann, T.
(author)
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Boretzky, K.
(author)
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Meister, Mikael,1969Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)meister
(author)
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Chatillon, A.
(author)
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Chulkov, L.V.
(author)
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Cortina-Gil, D.
(author)
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Pramanik, U. Datta
(author)
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Emling, H.
(author)
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Forssen, Christian,1974Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)f2bcf
(author)
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Fynbo, H.O.U.
(author)
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Geissel, H.
(author)
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Ickert, G.
(author)
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Jonson, Björn,1941Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)bjn
(author)
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Kulessa, R.
(author)
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Langer, C.
(author)
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Lantz, Mattias,1971Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)lantzm
(author)
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LeBleis, T.
(author)
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Lindahl, Anton,1982Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),University of Gothenburg(Swepub:gu)xliant
(author)
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Mahata, K.
(author)
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Meister, Mikael
(author)
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Münzenberg, G.
(author)
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Nilsson, Thomas,1965Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)tnilsson
(author)
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Nyman, Göran Hugo,1943Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)f2bgn
(author)
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Palit, R.
(author)
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Paschalis, S.
(author)
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Prokopowicz, W.
(author)
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Reifarth, R.
(author)
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Richter, A.
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Riisager, K.
(author)
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Schrieder, G.
(author)
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Simon, H.
(author)
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Sümmerer, K.
(author)
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Tengblad, Olof,1957
(author)
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Weick, H.
(author)
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Zhukov, Mikhail,1943Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)f2bmz
(author)
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Chalmers tekniska högskolaInstitutionen för fysik (GU)
(creator_code:org_t)
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In:Physics Letters B: Elsevier BV679:3, s. 191-1960370-2693
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Aksyutina, Yuliy ...
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Johansson, Håkan ...
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Aumann, T.
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Boretzky, K.
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Meister, Mikael, ...
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Chatillon, A.
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Chulkov, L.V.
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Cortina-Gil, D.
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Pramanik, U. Dat ...
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Emling, H.
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Forssen, Christi ...
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Fynbo, H.O.U.
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Geissel, H.
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Ickert, G.
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Jonson, Björn, 1 ...
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Kulessa, R.
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Langer, C.
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Lantz, Mattias, ...
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LeBleis, T.
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Lindahl, Anton, ...
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Mahata, K.
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Meister, Mikael
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Münzenberg, G.
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Nilsson, Thomas, ...
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Nyman, Göran Hug ...
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Palit, R.
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Paschalis, S.
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Prokopowicz, W.
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Reifarth, R.
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Richter, A.
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Riisager, K.
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Schrieder, G.
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Simon, H.
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Sümmerer, K.
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Tengblad, Olof, ...
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Weick, H.
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Zhukov, Mikhail, ...
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