title: The t+n+n system and 5H.
abstract: The one-proton knockout channel from 6He (240 MeV/u) impinging on a carbon target has been investigated. The triton fragments originating from this channel were detected in coincidence with the two neutrons. A broad structure, peaked at 3 MeV above the t+2n threshold, is observed in the t+n+n-relative energy spectrum. It is shown that this structure is mainly due to a I(pi)=1/2(+) resonance as expected for the 5H ground state, and from the observed angular and energy correlations, being used for the first time in 5H studies, that the neutrons to a large extent occupy the p shell.
authors: Fysiska Institutionen, Chalmers Tekniska Högskolaoch Göteborgs Universitet, S-412 96 Göteborg, Sweden.
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authors: Meister
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authors: Chulkov
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authors: Simon
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