Münster 2011 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 10: Struktur und Dynamik von Kernen III

HK 10.5: Vortrag

Montag, 21. März 2011, 17:45–18:00, A-1

Knockout and charge-exchange reactions from relativistic carbon beams — •Vasily Volkov and Matthias Holl — Technische Universität Darmstadt, Germany

Abstract: Cross-sections of one- and two-nucleon knockout reactions as well as charge-exchange reactions from relativistic proton-rich carbon beams obtained during experiment S341 at the fragment separator FRS at GSI will be presented. In one-nucleon knockout a reduction of the spectroscopic factors extracted from these reactions with increasing binding energy of the removed nucleon [1-3] is corroborated. Two-neutron and two-proton knockout reactions from ¹¹C have been compared with each other, and in charge-exchange reactions we observe the excitation of the Δ resonance. Beams of ^9,10,11,12C were produced in fragmentation reactions. The secondary beam impinged on a beryllium target at the second focus (S2) of the FRS. To maximize transmission, the reaction residues were measured at the third focus (S3) of the FRS. Supported in part by the BMBF, contracts 06DA9040I and 06MT9156, and through the GSI-TU-Darmstadt cooperation contract.

[1] B. A. Brown et al., Phys. Rev. C 65, 061601 (R) (2002)

[2] A. Gade et al., Phys. Rev. Lett. 93, 042501 (2004)

[3] A. Gade et al., Phys. Rev. C 77, 044306 (2008)