Production of Neutron-rich Heavy Residues and the Freeze-out Temperature in the Fragmentation of Relativistic 238U Projectiles Determined by the Isospin Thermometer

K. -H. Schmidt; M. V. Ricciardi; A. Botvina; T. Enqvist

doi:10.1016/s0375-9474(02)01120-x

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Production of Neutron-rich Heavy Residues and the Freeze-out Temperature in the Fragmentation of Relativistic 238U Projectiles Determined by the Isospin Thermometer

K. -H. Schmidt·M. V. Ricciardi·A. Botvina·T. Enqvist

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Abstract

Isotope yields of heavy residues produced in collisions of 238U with lead at 1AGeV show indications for a simultaneous break-up process. From the average N-over-Z ratio of the final residues up to Z = 70, the average limiting temperature of the break-up configuration at freeze out was determined to T approximately 5 MeV using the isospin-thermometer method. Consequences for the understanding of other phenomena in highly excited nuclear systems are discussed.

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K. -H. Schmidt, M. V. Ricciardi, A. Botvina, T. Enqvist. 2002-07-24. Production of Neutron-rich Heavy Residues and the Freeze-out Temperature in the Fragmentation of Relativistic 238U Projectiles Determined by the Isospin Thermometer. https://doi.org/10.1016/s0375-9474(02)01120-x

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