Experimental test of the ratio method to constrain the halo property of 11Be with BlueSteAl
ORAL
Abstract
A new method to constrain the properties of neutron-halo nuclei, the ratio method, was experimentally studied. The ratio method theoretically predicts that it is possible to constrain the single-particle state and the binding energy of a neutron-halo nucleus from the ratios of neutron breakup and elastic cross sections. We, therefore, tested the method to verify the predictions using a well-studied halo nucleus, 11Be, and explored the possibility of further extending the method to more exotic halo nuclei in the future. We measured angular differential elastic and neutron breakup cross sections of 11Be on 12C at 22.5 MeV/u at the Texas A&M University K500 cyclotron. The 12C target was bombarded with a 11Be beam produced at MARS (Momentum Achromat Recoil Separator) spectrometer. Elastic 11Be and neutron breakup 10Be were detected with the BlueSTEAl Si detector array that we developed recently. We will present preliminary results from our experiment.
*The work at Brookhaven National Laboratory was sponsored by the Office of Nuclear Physics, Office of Science of the U.S. Department of Energy under Contract No.DE-AC02-98CH10886 with Brookhaven Science Associates, LLC.
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Publication: S. Ota et al., Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment (in preparation).
Presenters
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Shuya Ota
- Brookhaven National Laboratory