He, Y.D.
NUCLEUS NUCLEUS --> FRAG X
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Si-28 (S-32) fragmentation at 3.7-A/GeV, 14.6-A/GeV and 200-A/GeV

The EMU1 collaboration Adamovich, M.I. ; Aggarwal, M.M. ; Alexandrov, Y.A. ; et al.
Z.Phys.A 351 (1995) 311-316, 1995.
Inspire Record 407109 DOI 10.17182/hepdata.16506

The fragmentation topology of28Si at 3.7A GeV and 14.6A GeV and32S at 200A GeV in reactions with emulsion nuclei is presented. The fragmentation cross sections are very similar at all three energies. A statistical percolation model can qualitatively describe the data forZ≥ 6. The He production is underestimated and the 3 ≤Z ≤ 5 fragments overestimated by this model.

6 data tables
Table 1

JINR.

Table 2

BNL-815.

Table 3

CERN-EMU-001.

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Search for fractional charge states in high-energy heavy fragments produced in collisions of 14.5 A-GeV Si-28 with Pb and Cu target

He, Y.D. ; Price, P.B. ;
Phys.Rev.C 44 (1991) 1672, 1991.
Inspire Record 327387 DOI 10.17182/hepdata.26081

We used nuclear track detectors to construct the trajectories of interactions and to measure with high resolution the charge of the beam and of heavy nuclear fragments produced in interactions. A null result of our search for fractional charge states in high-energy fragments with charges 8≤Z≤13 produced in collisions of 14.5A GeV Si28 nuclei with Pb and Cu targets leads us to conclude that the upper limits for the probability of production of a fragment with charge 23/3, 25/3, 26/3 28/3 29/3, 31/3 32/3, 34/3, 35/3, 37/3, or 38/3 charge unit in Pb and Cu at 90% confidence level are 1.9×10−4 and 3.9×10−4, respectively. We set a similar limit on the relative number of particle-stable fragments with 8≤Z≤14 created in the central rapidity region.

1 data table
Table 1

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