Probing the nuclear matter equation of state with neutrons from nucleus-nucleus collisions

R. Madey; M. Elaasar; W. M. Zhang; J. Schambach; D. Keane; B. D. Anderson; A. R. Baldwin; J. W. Watson; G. Krebs; H. Weiman; G. D. Westfall; C. Gale; K. Haglin

doi:10.1016/0375-9474(93)90698-W

Probing the nuclear matter equation of state with neutrons from nucleus-nucleus collisions

R. Madey, M. Elaasar, W. M. Zhang, J. Schambach, D. Keane, B. D. Anderson, A. R. Baldwin, J. W. Watson, G. Krebs, H. Weiman, G. D. Westfall, C. Gale, K. Haglin

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9 Scopus citations

Abstract

We report the first neutron triple-differential cross-sections measured in multiplicity-selected heavy-ion collisions. We examine the maximum azimuthal anisotropy ratio of these neutron cross-sections from 400 AMeV Nb-Nb and Au-Au collisions as a probe of the nuclear equation of state. Experiment reveals that this ratio does not depend on the mass of the colliding nuclei, contrary to the predictions of the Quantum Molecular Dynamics (QMD) transport theory. We compare the Nb-Nb data also with theoretical calculations done within the Boltzmann-Uehling-Uhlenbeck framework with both momentum-dependent and momentum-independent interactions. We find that the experiment is sensitive to the size of the nuclear incompressibility modulus K in the nuclear matter equation of state, and that the data demand a K value compatible with state-of-the-art nuclear matter calculations.

Original language	English
Pages (from-to)	779-784
Number of pages	6
Journal	Nuclear Physics A
Volume	553
Issue number	C
DOIs	https://doi.org/10.1016/0375-9474(93)90698-W
State	Published - Mar 1 1993
Externally published	Yes

Funding

This work was supported in part by the National Science Foundation under Grant Nos. PHY-91-07064, PHY-88-02392, and PHY-86-11210, in part by the U.S. Department of Energy under Grant No. DE-FG89ER40531 and DE-ACO3-?6SF00098, in part by the Natural Sciences and Engineering Research Council of Canada and in part by the FCAR Nouveaux Chercheurs Fund of the Quebec Government. We acknowledge computer time from the Minnesota Supercomputer Institute and the McOill University Centre for the Physics of Materials. C.G. and K.H. are happy to acknow~cdfie user,! conversations with S. Das Gupta and V.R. Pandharipande,

Funders	Funder number
National Science Foundation	PHY-88-02392, PHY-86-11210, PHY-91-07064
U.S. Department of Energy	6SF00098, DE-FG89ER40531
Natural Sciences and Engineering Research Council of Canada
Fonds pour la Formation de Chercheurs et l'Aide à la Recherche

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title = "Probing the nuclear matter equation of state with neutrons from nucleus-nucleus collisions",

abstract = "We report the first neutron triple-differential cross-sections measured in multiplicity-selected heavy-ion collisions. We examine the maximum azimuthal anisotropy ratio of these neutron cross-sections from 400 AMeV Nb-Nb and Au-Au collisions as a probe of the nuclear equation of state. Experiment reveals that this ratio does not depend on the mass of the colliding nuclei, contrary to the predictions of the Quantum Molecular Dynamics (QMD) transport theory. We compare the Nb-Nb data also with theoretical calculations done within the Boltzmann-Uehling-Uhlenbeck framework with both momentum-dependent and momentum-independent interactions. We find that the experiment is sensitive to the size of the nuclear incompressibility modulus K in the nuclear matter equation of state, and that the data demand a K value compatible with state-of-the-art nuclear matter calculations.",

author = "R. Madey and M. Elaasar and Zhang, {W. M.} and J. Schambach and D. Keane and Anderson, {B. D.} and Baldwin, {A. R.} and Watson, {J. W.} and G. Krebs and H. Weiman and Westfall, {G. D.} and C. Gale and K. Haglin",

year = "1993",

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doi = "10.1016/0375-9474(93)90698-W",

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T1 - Probing the nuclear matter equation of state with neutrons from nucleus-nucleus collisions

AU - Madey, R.

AU - Elaasar, M.

AU - Zhang, W. M.

AU - Schambach, J.

AU - Keane, D.

AU - Anderson, B. D.

AU - Baldwin, A. R.

AU - Watson, J. W.

AU - Krebs, G.

AU - Weiman, H.

AU - Westfall, G. D.

AU - Gale, C.

AU - Haglin, K.

PY - 1993/3/1

Y1 - 1993/3/1

N2 - We report the first neutron triple-differential cross-sections measured in multiplicity-selected heavy-ion collisions. We examine the maximum azimuthal anisotropy ratio of these neutron cross-sections from 400 AMeV Nb-Nb and Au-Au collisions as a probe of the nuclear equation of state. Experiment reveals that this ratio does not depend on the mass of the colliding nuclei, contrary to the predictions of the Quantum Molecular Dynamics (QMD) transport theory. We compare the Nb-Nb data also with theoretical calculations done within the Boltzmann-Uehling-Uhlenbeck framework with both momentum-dependent and momentum-independent interactions. We find that the experiment is sensitive to the size of the nuclear incompressibility modulus K in the nuclear matter equation of state, and that the data demand a K value compatible with state-of-the-art nuclear matter calculations.

AB - We report the first neutron triple-differential cross-sections measured in multiplicity-selected heavy-ion collisions. We examine the maximum azimuthal anisotropy ratio of these neutron cross-sections from 400 AMeV Nb-Nb and Au-Au collisions as a probe of the nuclear equation of state. Experiment reveals that this ratio does not depend on the mass of the colliding nuclei, contrary to the predictions of the Quantum Molecular Dynamics (QMD) transport theory. We compare the Nb-Nb data also with theoretical calculations done within the Boltzmann-Uehling-Uhlenbeck framework with both momentum-dependent and momentum-independent interactions. We find that the experiment is sensitive to the size of the nuclear incompressibility modulus K in the nuclear matter equation of state, and that the data demand a K value compatible with state-of-the-art nuclear matter calculations.

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DO - 10.1016/0375-9474(93)90698-W

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SP - 779

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JO - Nuclear Physics A

JF - Nuclear Physics A

IS - C

ER -

Probing the nuclear matter equation of state with neutrons from nucleus-nucleus collisions

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