Dissociation of [Formula Presented]

J. Wang, A. Galonsky, J. J. Kruse, E. Tryggestad, R. H. White-Stevens, P. D. Zecher, Y. Iwata, K. Ieki, Horváth, F. Deák, Kiss, Z. Seres, J. J. Kolata, J. von Schwarzenberg, R. E. Warner, H. Schelin

Research output: Article

2 Citations (Scopus)


The dissociation reaction [Formula Presented] was studied with [Formula Presented] projectiles at 23.9 MeV/nucleon in targets of C, Al, Cu, Sn, Pb, and U. Relative to Al, the [Formula Presented] removal cross section [Formula Presented] with each of the other targets was determined. With U, the Coulomb part accounts for 2/3 of [Formula Presented] The widths of the [Formula Presented] particle and neutron parallel momentum distributions increase with target Z. For the [Formula Presented] particle, [Formula Presented] dissociation on C gave width [Formula Presented] corresponding to an rms radius of the halo neutrons of (2.95±0.17) fm, which is (0.35±0.17) fm larger than the rms radius of all four neutrons. The relation between the widths of the [Formula Presented] particle and neutron distributions indicates only a small correlation between the two neutrons. This conclusion is supported by the distribution function for the angle between the two neutrons, which was obtained in kinematically complete measurements. The latter measurements with the U target also yielded an [Formula Presented] strength function, and it agreed with one determined in an experiment at ten times our beam energy.

Original languageEnglish
Number of pages1
JournalPhysical Review C - Nuclear Physics
Issue number3
Publication statusPublished - jan. 1 2002

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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    Wang, J., Galonsky, A., Kruse, J. J., Tryggestad, E., White-Stevens, R. H., Zecher, P. D., Iwata, Y., Ieki, K., Horváth, Deák, F., Kiss, Seres, Z., Kolata, J. J., von Schwarzenberg, J., Warner, R. E., & Schelin, H. (2002). Dissociation of [Formula Presented]. Physical Review C - Nuclear Physics, 65(3). https://doi.org/10.1103/PhysRevC.65.034306