3 search hits
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Stopping power and collective flow of nuclear matter in the reaction Ar+Pb at 0.8 GeV/u
(1983)
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R. E. Renfordt
D. Schall
R. Bock
R. Brockmann
J. W.. Harris
A. Sandoval
Reinhard Stock
Herbert Ströbele
D. Bangert
W. Rauch
G. Odyniec
H. G. Pugh
L. S. Schroeder
- Charged-particle exclusive data for Ar+Pb collisions at 0.772 GeV/u are analyzed in terms of collective variables for the event shapes in momentum space. Semicentral collisions lead to sidewards flow whereas nearly head-on collisions have spherical shapes in the c.m. frame, resulting from complete stopping of projectile motion. The hydrodynamical model predictions agree qualitatively with the data whereas the standard cascade model disagrees, lacking in stopping power and collective flow.
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Charged-particle exclusive analysis of central Ar + KCl and Ar + Pb reactions at 1.8 and 0.8 GeV/nucleon
(1983)
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Herbert Ströbele
R. Brockmann
J. W. Harris
F. Riess
et. al.
Reinhard Stock
K. L. Wolf
H. G. Pugh
L. S. Schroeder
R. E. Renfordt
K. Tittel
M. Maier
- An event by event analysis is carried out for all charged particles observed in central collisions of 40Ar + KCl and 40Ar + Pb at 1.808 and 0.772 GeV/nucleon, respectively. Total transverse energy is used for impact parameter selection within the central trigger condition. The central Ar + KCl reaction exhibits a forward-backward oriented momentum flux. The flux distribution of the most central Ar + Pb events is approximately isotropic in the fireball center of mass.
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11 262 keV 1+ state in 20Ne
(1983)
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U. E. P. Berg
K. Ackermann
K. Bangert
Reinhard Stock
K. Wienhard
- The excitation energy of the lowest 1+, T=1 state in 20Ne, which is important for parity nonconservation studies, has been determined in a photon scattering experiment to be 11 262.3 ± 1.9 keV. Values for the gamma -ray branching of this level to the ground state and to the first 2+ level in 20Ne are 84 ± 5% and 16 ± 5%, respectively. NUCLEAR REACTIONS 20Ne( gamma , gamma ), E gamma <18 MeV, bremsstrahlung; measured E gamma , gamma branching. Ne natural targets.
