He, Y.D.
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Nuclear and electromagnetic fragmentation of 2.25-TeV Au-197 nuclei

He, Y.D. ; Price, P.B. ;
Z.Phys.A 348 (1994) 105-109, 1994.
Inspire Record 380468 DOI 10.17182/hepdata.16562

We report the first measurement of the total charge-loss cross section σtot=σem+σnuc and partial cross sections (for ΔZ=1, 2, ..., 9) of 11.4 A GeV197Au nuclei in various targets. The large Coulomb barrier for Au reduces the electromagnetic contribution σem in a Pb target to only 18% of σnuc, compared with ∼ 70% for 14.5 A GeV28Si and 120% for 200 A GeV32S. With σem taken to be ∝ZT1.8, σnuc can be fitted with σnuc=α(AP1/3 +AT1/3−b)2, with b=0.83 and α=59 mb, essentially the same as found at energies of 1 to 2 A GeV. Electromagnetic partial cross sections for ΔZ=1 exceed ∼ 40 mb in the Pb, Sn, Cu, and Fe targets and are substantial for larger values ofΔZ in the heavier targets.

2 data tables
Table 1

TOTAL CHARGE-LOSS CROSS SECTION.

Table 2

PARTIAL CHARGE-CHANGING CROSS SECTION.


Global transverse energy distributions in Si + Al, Au at 14.6-A/GeV/c and Au + Au at 11.6-A.GeV/c

The E-802 collaboration Ahle, L. ; Akiba, Y. ; Beavis, D. ; et al.
Phys.Lett.B 332 (1994) 258-264, 1994.
Inspire Record 374156 DOI 10.17182/hepdata.28663

Measurements of the global transverse energy distributions dσ / dE T and dE T / dη using the new AGS beam of 197 Au at 11.6 A GeV/ c on a Au target, as well as a beam of 28 Si at 14.6 A GeV/ c on Al and Au targets, are presented for a leadglass detector with acceptance 1.3 ≤ η ≤ 2.4 and 0 ≤ φ < 2 π . The dσ / dE T spectra are observed to have different shapes for the different systems and simple energy rescaling does not account for the projectile dependence. The Au+Au dσ / dE T spectrum is satisfactorily constructed from the upper edge of Si+Au by the geometric Wounded Projectile Nucleon Model after applying a correction for the beam energy.

6 data tables
Table 1

Incident energy is 14.6 GeV/nucleon.

Table 2

Incident energy is 14.6 GeV/nucleon.

Table 3

Incident energy is 11.6 GeV/nucleon.

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