Dependence of the 12C(γ,pd) reaction on photon linear polarisation
Abstract
The sensitivity of the 12C(γ,pd) reaction to photon linear polarisation has been determined at MAMI, giving the first measurement of the reaction for a nucleus heavier than 3He. Photon asymmetries and cross sections were measured for Eγ=170 to 350 MeV. For Eγ below the resonance, reactions leaving the residual 9Be near its ground state show a positive asymmetry of up to 0.3, similar to that observed for 3He suggesting a similar reaction mechanism for the two nuclei.
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