학술논문
The ASY-EOS experiment at GSI: Constraining the symmetry energy at supra-saturation densities
Document Type
article
Author
Russotto P.; Chartier M.; Cozma M.D.; De Filippo E.; Le Fèvre A.; Gannon S.; Gašparić I.; Kiš M.; Kupny S.; Leifels Y.; Lemmon R.C.; Li Q.; Łukasik J.; Marini P.; Pawłowski P.; Trautmann W.; Acosta L.; Adamczyk M.; Al-Ajlan A.; Al-Garawi M.; Al-Homaidhi S.; Amorini F.; Auditore L.; Aumann T.; Ayyad Y.; Baran V.; Basrak Z.; Bassini R.; Benlliure J.; Boiano C.; Boisjoli M.; Boretzky K.; Brzychczyk J.; Budzanowski A.; Cardella G.; Cammarata P.; Chajecki Z.; Chbihi A.; Colonna M.; Czech B.; Di Toro M.; Famiano M.; Greco V.; Grassi L.; Guazzoni C.; Guazzoni P.; Heil M.; Heilborn L.; Introzzi R.; Isobe T.; Kezzar K.; Krasznahorkay A.; Kurz N.; La Guidara E.; Lanzalone G.; Lasko P.; Lombardo I.; Lynch W.G.; Matthews Z.; May L.; Minniti T.; Mostazo M.; Pagano A.; Papa M.; Pirrone S.; Pleskac R.; Politi G.; Porto F.; Reifarth R.; Reisdorf W.; Riccio F.; Rizzo F.; Rosato E.; Rossi D.; Santoro S.; Simon H.; Skwirczynska I.; Sosin Z.; Stuhl L.; Trifirò A.; Trimarchi M.; Tsang M.B.; Verde G.; Veselsky M.; Vigilante M.; Wieloch A.; Wigg P.; Wolter H.H.; Wu P.; Yennello S.; Zambon P.; Zetta L.; Zoric M.
Source
EPJ Web of Conferences, Vol 88, p 00022 (2015)
Subject
Language
English
ISSN
2100-014X
Abstract
The elliptic-flow ratio of neutrons with respect to protons or light complex particles in reactions of heavy ions at pre-relativistic energies has been proposed as an observable sensitive to the strength of the symmetry term of the nuclear equation of state at supra-saturation densities. In the ASY-EOS experiment at the GSI laboratory, flows of neutrons and light charged particles were measured for 197Au+197Au, 96Zr+96Zr and 96Ru+96Ru collisions at 400 MeV/nucleon with the Large Area Neutron Detector LAND as part of a setup with several additional detection systems used for the event characterization. Flow results obtained for the Au+Au system, in comparison with predictions of the UrQMD transport model, confirm the moderately soft to linear density dependence of the symmetry energy deduced from the earlier FOPI-LAND data.