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DOE OSTI · 2562182

First experimental test of the ratio method

Ota, S.·Capel, P. (ORCID:0000000187227133)·Christian, G.·Durant, V.·Hagel, K.·Harris, E.·Johnson, R. C.·Luo, Z.·Nunes, F. M.·Roosa, M.·Saastamoinen, A.·Scriven, D. P.
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11Be73 NUCLEAR PHYSICS AND RADIATION PHYSICSBreakupElastic scatteringHalo nucleiRatio

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Ota, S., Capel, P. (ORCID:0000000187227133), Christian, G., Durant, V., Hagel, K., Harris, E., Johnson, R. C., Luo, Z., Nunes, F. M., Roosa, M., Saastamoinen, A., Scriven, D. P.. 2025-08-01. First experimental test of the ratio method. https://doi.org/10.1016/j.nuclphysa.2025.123120

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DOE OSTI2024

First Experimental Test of the Ratio Method

The ratio is a new reaction observable suggested to extract accurately structure information on halo nuclei. It corresponds to the ratio of differential cross sections for scattering and breakup, which is predicted to remove the uncertainty related to the reaction dynamics. We present here the first experimental test of the method for the 11 Be + 12 C collision at E Lab = 20A MeV performed at Texas A&M University. Differential cross sections for scattering and inclusive one-neutron breakup have been measured with the new detector array BlueSTEAl. The ratio of cross sections is very smooth and independent of the projectile-target interaction, which demonstrates the validity of the ratio method. We extend our analysis to existing 11 Be + 208 Pb data, confirming that the method works well on any target.

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