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Knockout from Ar-46 : l=3 neutron removal and deviations from eikonal theory

Gade, A, Bazin, D, Bertulani, CA, Brown, BA, Campbell, CM, Church, JA, Dinca, DC, Enders, J, Glasmacher, T, Hansen, PG, Hu, Z, Kemper, KW, Mueller, WF, Olliver, H, Perry, BC, Riley, LA, Roeder, BT, Sherrill, BM, Terry, JR, Tostevin, JA and Yurkewicz, KL (2005) Knockout from Ar-46 : l=3 neutron removal and deviations from eikonal theory PHYSICAL REVIEW C, 71 (5). ? - ?. ISSN 0556-2813


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The Be-9(Ar-46,Ar-45+gamma)X one-neutron removal reaction has been studied in inverse kinematics at 70 MeV/nucleon. Coincidences with gamma rays served to disentangle knockout events leading to the Ar-45 ground state. The measured partial cross section corresponds to a spectroscopic factor of 4.9(7). The residue momentum distribution is compared with new calculations based on eikonal theory and represents the first case of an L=3 neutron removal, as is expected for populating a 0f(7/2) hole in the N=28 projectile. However, the measured Ar-45 momentum distribution has a marked low-momentum tail suggestive of dissipative effects whereas the eikonal model predictions are symmetric. The angular distribution of the residues confirms that there is a deviation from the model.

Item Type: Article
Uncontrolled Keywords: Science & Technology, Physical Sciences, Physics, Nuclear, Physics, EXOTIC NUCLEI, ENERGIES
Related URLs:
Divisions: Faculty of Engineering and Physical Sciences > Physics
Depositing User: Mr Adam Field
Date Deposited: 27 May 2010 14:08
Last Modified: 23 Sep 2013 18:27

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