2024-03-28T19:14:17Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/97192020-06-16T11:39:52Zcom_10261_135com_10261_4col_10261_388
DIGITAL.CSIC
author
Markenroth, K.
author
Meister, M.
author
Eberlein, B.
author
Aleksandrov, D.
author
Aumann, T.
author
Axelsson, L.
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Baumann, T.
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García Borge, María José
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Chulkov, L. V.
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Dostal, W.
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Elze, Th. W.
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Emling, H.
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Geissel, H.
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Grünschloß, A.
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Hellström, M.
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Holeczek, J.
author
Jonson, B.
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Kratz, J. V.
author
Kulessa, R.
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Leistenschneider, A.
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Mukha, I.
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Münzenberg, G.
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Nickel, F.
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Nilsson, T.
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Nyman, G.
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Pfützner, M.
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Pribora, V.
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Richter, Achim W.
author
Riisager, K.
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Scheidenberger, C.
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Schrieder, G.
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Simon, H.
author
Stroth, J.
author
Tengblad, Olof
author
Zhukov, M. V.
2009-01-20T09:52:51Z
2009-01-20T09:52:51Z
2001-01-01
Nuclear Physics A 679(3-4): 462–480 (2001)
0375-9474
http://hdl.handle.net/10261/9719
10.1016/S0375-9474(00)00372-9
1873-1554
Dissociation of 227 MeV/u 8He in a carbon target has been studied in kinematically complete experiments. The data include the relative energy spectrum, angular distributions in the neutron knock-out channel (6He+n) as well as diffractive dissociation and inelastic scattering into the (6He+2n) channel. The data are compared with corresponding results from the well-known halo nucleus 6He. In both cases it is found that neutron knock-out is the dominating reaction channel. The relative energy spectrum (6He+n) shows a structure, which is interpreted as being due to the Iπ=3/2− resonance in the 7He ground state with about equal contribution from its Iπ=1/2− spin–orbit partner.
The 7He resonance shows a spin alignment similar to that observed in 5He, but with a smaller anisotropy indicating that the structure of the 8He ground state is more complicated than that of 6He.
The data in the (6He+2n) channel were used to identify resonances in the excitation energy spectrum of 8He. If the spectrum is interpreted as two overlapping resonances, the spin-parity assignment for these is found to be 2+ and 1−, respectively.
eng
closedAccess
[PACS] Properties of specific nuclei listed by mass ranges: 6 ≤ A ≤ 19
[PACS] Polarization phenomena in reactions
8He-6He: a comparative study of nuclear fragmentation reactions
artículo
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