Directed and elliptic flow in 197Au+197Au at intermediate energies

Lukasik, J.; Auger, G.; BEGEMANN BLAICH, M. L.; Bellaize, N.; Bittiger, R.; Bocage, F.; Borderie, B.; Bougault, R.; BOU RIQUET, B.; Charvet, J. L.; Chbihi, A.; Dayras, R.; Durand, D.; Frankland, J. D.; Galichet, E.; Gourio, D.; Guinet, D.; Hudan, S.; Lautesse, P.; Lavaud, F.; LE FVRE, A.; Legrain, R.; Lopez, O.; Lynen, U.; Mller, W. F. J.; Nalpas, L.; Orth, H.; Plagnol, E.; Rosato, Elio; Saija, A.; Schwarz, C.; Sfienti, C.; Tamain, B.; Trauttmann, W.; Trzcinski, A.; Turz, K.; Vient, E.; Vigilante, Mariano; Zwieglinski, C. VOLANT AND B.

doi:10.1016/j.physletb.2004.12.076

Directed and elliptic flow for the 197Au + 197Au system at incident energies between 40 and 150 MeV per nucleon has been measured using the INDRA 4π multi-detector. For semi-central collisions, the elliptic flow of Z 2 particles switches from in-plane to out-of-plane enhancement at around 100 MeV per nucleon, in good agreement with the result reported by the FOPI Collaboration. The directed flow changes sign at a bombarding energy between 50 and 60 MeV per nucleon and remains negative at lower energies. The conditions for the appearance and possible origins of the observed antiflow are discussed.

Directed and elliptic flow in 197Au+197Au at intermediate energies / J., Lukasik; G., Auger; M. L., BEGEMANN BLAICH; N., Bellaize; R., Bittiger; F., Bocage; B., Borderie; R., Bougault; B., BOU RIQUET; J. L., Charvet; A., Chbihi; R., Dayras; D., Durand; J. D., Frankland; E., Galichet; D., Gourio; D., Guinet; S., Hudan; P., Lautesse; F., Lavaud; A., LE FVRE; R., Legrain; O., Lopez; U., Lynen; W. F. J., Mller; L., Nalpas; H., Orth; E., Plagnol; Rosato, Elio; A., Saija; C., Schwarz; C., Sfienti; B., Tamain; W., Trauttmann; A., Trzcinski; K., Turz; E., Vient; Vigilante, Mariano; C. VOLANT AND B., Zwieglinski. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 608:(2005), pp. 223-230. [10.1016/j.physletb.2004.12.076]