On the Space-Time Difference of Proton and Composite Particle Emission in Central Heavy-Ion Reactions at 400 AMeV

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dc.creatorKotte, R.
dc.creatorBarz, H. W.
dc.creatorPlettner, C.
dc.creatorNeubert, W.
dc.creatorWohlfarth, D.
dc.creatorcollaboration, the FOPI
dc.date1999-04-13
dc.date1999-08-17
dc.date.accessioned2026-07-07T05:37:48Z
dc.date.available2026-07-07T05:37:48Z
dc.descriptionSmall-angle correlations of pairs of nonidentical light charged particles produced in central collisions of heavy ions in the A=100 mass region at a beam energy of 400 AMeV are investigated with the FOPI detector system at GSI Darmstadt. The difference of longitudinal correlation functions with the relative velocity parallel and anti-parallel to the center-of-mass velocity of the pair in the central source frame is studied. This method allows extracting the apparent space-time differences of the emission of the charged particles. Comparing the correlations with results of a final-state interaction model delivers quantitative estimates of these asymmetries. Time delays as short as 1 fm/c or - alternatively - source radius differences of a few tenth fm are resolved. The strong collective expansion of the participant zone introduces not only an apparent reduction of the source radius but also a modification of the emission times. After correcting for both effects a complete sequence of space-time emission points of p, d, t, 3He, alpha particles is presented for the first time.
dc.description11 pages, 12 included figures, accepted by Eur. Phys. Journ. A
dc.identifierhttps://arxiv.org/abs/nucl-ex/9904007
dc.identifierhttp://arxiv.org/abs/nucl-ex/9904007
dc.identifierEur.Phys.J. A6 (1999) 185-195
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/81406
dc.subjectNuclear Experiment
dc.titleOn the Space-Time Difference of Proton and Composite Particle Emission in Central Heavy-Ion Reactions at 400 AMeV
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