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Köln 2004 – scientific programme

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HK: Physik der Hadronen und Kerne

HK 41: Heavy Ions IV

HK 41.6: Talk

Thursday, March 11, 2004, 15:45–16:00, E

High-resolution experiments on projectile fragments - A new approach to the properties of hot and dense nuclear matter — •A. Kelic1, J. Benlliure2, T. Enqvist1, V. Henzl1, D. Henzlova1, J. Pereira2, M. V. Ricciardi1, K.-H. Schmidt1, and O. Yordanov11GSI - Darmstadt — 2Univ. Santiago de Compostela, Spain

Dedicated experiments on nucleus-nucleus collisions are the main source of our knowledge on static and dynamic bulk properties of nuclear matter. Most investigations have concentrated on the detection of nucleons, produced particles and very light fragments in full-acceptance experiments. We report on a recently developed complementary experimental approach, which is based on precise measurements of the projectile spectator. We make use of a high-resolution magnetic spectrometer, which allows a very precise longitudinal momentum determination and the full identification of all the detected fragments in A and Z. The new approach gives access to nonlocal features of the nuclear EOS [1] and represents an important progress in studying the influence of the N/Z degree of freedom on the properties of nuclear matter [2]. It is discussed in which way the information extracted from these experiments differs from previous results. It is pointed out, how these experiments will profit from the new installations planned in the future GSI project. [1] M. V. Ricciardi et al., Phys. Rev. Lett. 90 (2003) 212302. [2] K.-H. Schmidt et al., Nucl. Phys. A710 (2002) 157.

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