Bochum 1998 – wissenschaftliches Programm

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HK: Hadronen und Kerne

HK 6: Spectroscopy, Light Nuclei

HK 6.4: Vortrag

Montag, 16. März 1998, 15:15–15:30, D

Probing nuclear structure of light exotic nuclei with breakup reactions — •T. Baumann — GSI, Darmstadt

Light dripline nuclei in the lithium-to-carbon region have recently been investigated at the fragment separator (FRS) at GSI . Using the energy-loss mode of the FRS, the longitudinal momentum distributions of core fragments from breakup reactions at 1.0–1.5 GeV/nucleon were measured. The study focused on the loosely bound neutron-rich carbon isotopes ^17,19C and on the boron isotopes ^8,10,14B. To further clarify the structure of the proton halo ⁸B, we also investigated the one-neutron removal of its mirror nucleus ⁸Li. The longitudinal momentum distribution reveals information about the nuclear structure and the formation of halo states in loosely bound systems. ⁸B and ¹⁹C have been investigated in earlier experiments [1,2]. The measured width of the longitudinal momentum distribution for ¹⁹C does not agree with the result of Ref. [2], but is compatible with available nuclear structure calculations [3]. The measurement of ⁸B employed detectors with higher resolution and an improved detector-setup compared to Ref. [1].

[1] W. Schwab et al., Z. Phys. A 350, 283 (1995)

[2] D. Bazin et al., Phys. Rev. Lett. 74, 3569 (1995)

[3] H. Lenske et al., contribution to this conference