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Closed Access item Experimental evidence for the B-8 ground state configuration

Authors:Cortina-Gil, D.
Markenroth, K.
Attallah, F.
Baumann, T.
Benlliure, J.
García Borge, María José
Chulkov, L. V.
Pramanik, U. Datta
Fernández-Vázquez, J.
Forssén, C.
Fraile, Luis M.
Geissel, H.
Gerl, J.
Hammache, F.
Itahashi, K.
Janik, R.
Jonson, B.
Karlsson, S.
Lenske, H.
Mandal, S.
Meister, M.
Mocko, X.
Münzenberg, G.
Ohtsubo, T.
Ozawa, A.
Parfenova, Y.
Pribora, V.
Riisager, K.
Scheit, H.
Schneider, R.
Schmidt, K.
Schrieder, G.
Simon, H.
Sitar, B.
Stolz, A.
Strmen, P.
Sümmerer, K.
Szarka, I.
Wan, S.
Weick, H.
Zhukov, M. V.
Keywords:[PACS] Interaction and reaction cross sections, [PACS] Breakup and momentum distributions, [PACS] Properties of specific nuclei listed by mass ranges: 6 ≤ A ≤ 19
Issue Date:12-Feb-2002
Citation:Physics Letters B 529(1-2): 36–41 (2002)
Abstract:The Be-7 fragments produced in one-proton removal from relativistic B-8 nuclei of 936 MeV/nucleon in a carbon target have been detected in coincidence with gamma rays emitted by these fragments at the reaction target. It is found that 13 ± 3% of the Be-7 fragments are released in the 429 keV excited state, Be-7*, which gives direct experimental information on the ground state configuration of B-8. The longitudinal momentum distributions (p||) of the Be-7 fragments have been measured, both inclusively and in coincidence with de-excitation γ-rays from Be-7*. The widths and cross sections of the respective p|| distributions are compared with calculations in a three-body cluster model.
Description:6 pages, 1 table, 3 figures.-- PACS nrs.: 25.60.Dz; 25.60.Gc; 27.20.+n.-- Printed version published March 14, 2002.
Publisher version (URL):http://dx.doi.org/10.1016/S0370-2693(02)01245-5
Appears in Collections:(CFMAC-IEM) Artículos

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