Breakup density in spectator fragmentation

• Published in: Physics letters. B Vol. 461; no. 4; pp. 315 - 321
• Main Authors: Fritz, S., Schwarz, C., Bassini, R., Begemann-Blaich, M., Gaff-Ejakov, S.J., Gourio, D., Groß, C., Immé, G., Iori, I., Kleinevoß, U., Kunde, G.J., Kunze, W.D., Lynen, U., Maddalena, V., Mahi, M., Möhlenkamp, T., Moroni, A., Müller, W.F.J., Nociforo, C., Ocker, B., Odeh, T., Petruzzelli, F., Pochodzalla, J., Raciti, G., Riccobene, G., Romano, F.P., Saija, A., Schnittker, M., Schüttauf, A., Seidel, W., Serfling, V., Sfienti, C., Trautmann, W., Trzcinski, A., Verde, G., Wörner, A., Xi, Hongfei, Zwieglinski, B.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 1999
• Subjects: 25.70.Pq; 25.70.Mn; 25.75.Gz; 21.65.+f
• ISSN: 0370-2693; 1873-2445
• DOI: 10.1016/S0370-2693(99)00860-6

Proton–proton correlations and correlations of protons, deuterons and tritons with α particles from spectator decays following 197 Au + 197 Au collisions at 1000 MeV per nucleon have been measured with two highly efficient detector hodoscopes. The constructed correlation functions, interpreted within the approximation of a simultaneous volume decay, indicate a moderate expansion and low breakup densities, similar to assumptions made in statistical multifragmentation models.