We have studied He-p collisions at a He incident momentum of 8.56 GeV/c using the 1 m Dubna bubble chamber. The p -'He elastic scattering, the coherent p + 'He~X + 'He + m production and the breakup reaction p + He -+p+'He+ n have beeninvestigated. Cross sections and production features are presented.From the breakup reaction, subsamples of events in which a He or a n appear as spectators were selected.
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