Projectile fragmentation of 129Xe at Elab=790 AMeV

Details Projectile fragmentation of 129Xe at Elab=790 AMeV Projectile fragmentation of 129Xe at Elab=790 AMeV

1998-03-29

arxiv.org/abs/nucl-ex/9803014v1

Phys.Rev.C58:247-255,1998

Physics

Nuclear Physics

Nuclear Experiment

21 pages, 8 figures, 1 table

Scientific paper

10.1103/PhysRevC.58.247

We have measured production yields and longitudinal momentum distributions of projectile-like fragments in the reaction 129Xe + 27Al at an energy of Elab=790 AMeV. Production cross sections higher than expected from systematics were observed for nuclei in the neutron-deficient tails of the isotopic distributions. A comparison with previously measured data from the fragmentation of 136Xe ions shows that the production yields strongly depend on the neutron excess of the projectile with respect to the line of beta-stability. The momentum distributions exhibit a dependence on the fragment neutron-to-proton ratio in isobaric chains, which was not expected from systematics so far. This can be interpreted by a higher excitation of the projectile during the formation of neutron-deficient fragments.

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