Measurement of the He(He, He)He cross section with a He-implanted A1 target

R. Raabe, L. Weissman, A. Andreyev, C. Angulo, D. Baye, W. Bradfield-Smith, S. Cherubini, T. Davinson, P. Descouvemont, A. Di Pietro, M. Huyse, A.M. Laird, W.F. Mueller, A. Musumarra, A. Ostrowski, A. Piechaczek, A. Shotter, G. Terwagne, P. Van Duppen, A. Wöhr

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Abstract / Description of output

In order to obtain information on a possible two-neutron component in the He wavefunction, we investigated the He(He, He)He elastic scattering at beam energies of 29.1, 29.6 and 40 MeV and at center-of-mass angles between 20 and 163 degrees. The experiments were performed at the ARENAS Radioactive Ion Beam Facility in Louvain-La-Neuve. We used aHe-implanted aluminium foil as a target. A He thickness of about 2-3 × 10 particles/cm2 was obtained implanting He nuclei at energies between 20 and 80 keV in 0.7-μm-thick foils. Data collected in a larger angular range than previous measurements give additional evidence for the 2n-transfer process to take place in the He(He, He)He scattering. Our results demonstrate the possibility of using a He-implanted target in experiments with low-intensity beams, like radioactive beams, where deterioration of the target is irrelevant.
Original languageEnglish
JournalNuclear Physics A
Volume701
Issue number1-4
Publication statusPublished - 22 Apr 2002

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