0000000000235360

AUTHOR

Z. G. Fan

showing 3 related works from this author

Out-of-plane emission of nuclear matter in Au+Au collisions between 100 and 800 AMeV

1997

We present new experimental results concerning the azimuthal distributions of proton-likes, light and intermediate mass fragments at midrapidity for Au(100-800 AMeV)+Au collisions measured with the FOPI phase-I detector at GSI in Darmstadt. The azimuthal distributions are investigated as a function of the collision centrality, the incident energy, the fragment charge and transverse momentum. The azimuthal anisotropy is maximum for impact parameters around 7 fm. Intermediate mass fragments present a stronger out-of-plane emission signal than light fragments and a saturation is reached for Z greater than or equal to 4. The azimuthal anisotropy increases with the fragment transverse momentum a…

PhysicsNuclear reactionNuclear and High Energy PhysicsPhase (waves)Charge (physics)Nuclear matterAzimuthNuclear physicsNuclear Reactions; Au-197 (Au-197; X); E=100-800 MeV/nucleon; Azimuthal anisotropy; Out-of-plane emissionAtomic physicsNuclear ExperimentAnisotropySaturation (magnetic)Beam (structure)Nuclear Physics A
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Sideward flow in Au + Au collisions at 400 A.MeV

1995

Abstract We present new experimental data obtained with the FOPI detector at SIS, for the Au + Au heavy-ion collisions at 400 A MeV incident energy. The sideward flow, determined from a method without reaction-plane reconstruction, and the nuclear stopping are studied as a function of the centrality of the collisions. In order to study the nuclear in-medium effects, which act on the NN cross sections and potential and hence on experimental observables like the nuclear-matter flow and stopping, these results are compared with the predictions of two different QMD versions. The first one offers a fully microscopic calculation of the cross sections and potential in the G-matrix formalism and na…

Nuclear reactionPhysicsNuclear and High Energy PhysicsParticle physics010308 nuclear & particles physicsNuclear TheoryDetectorObservable01 natural sciences7. Clean energyNuclear physicsFormalism (philosophy of mathematics)0103 physical sciences[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]Incident energyNuclear Experiment010306 general physics
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A highly-segmented ΔE-time-of-flight wall as forward detector of the 4π-system for charged particles at the SIS/ESR accelerator

1993

Abstract At the SIS/ESR accelerator facility at GSI in Darmstadt the 4π-detector system FOPI is under construction at present. It is designed for the investigation of central collisions of heavy ions in the energy range up to 2 A GeV. As phase I of this detector a forward wall has been built and used in various experiments. It comprizes a total number of 764 scintillators with an additional shell of 188 thin ΔE -detectors in front of it and covers the full azimuth of the polar angles from 1° to 30°. The velocity and the nuclear charge of the fragments are determined by a combined time-of-flight and ΔE measurement.

PhysicsNuclear and High Energy PhysicsRange (particle radiation)Wire chamberPhysics::Instrumentation and DetectorsNuclear TheoryDetectorScintillatorParticle detectorCharged particleNuclear physicsTime of flightIonization chamberAtomic physicsNuclear ExperimentInstrumentationNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
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