The 16O(γ, 2N) reaction measured with tagged photons

6533b81ffe1ef96bd1278e4a

RESEARCH PRODUCT

The 16O(γ, 2N) reaction measured with tagged photons

S.n. Dancer H. Schmieden J. C. Mcgeorge S.j. Hall R.o. Owens J. R. M. Annand B. Schoch I. Anthony J. D. Kellie S.m. Doran Johannes Vogt P.a. Wallace S. Klein G.j. Miller I. J. D. Macgregor

subject

Nuclear reaction Physics Nuclear and High Energy Physics Cross section (physics)Distribution (mathematics)Photon Deuterium Phase space Nuclear Theory Atomic physics Nuclear Experiment Absorption (electromagnetic radiation)

description

The results of tagged-photon measurements of the 4He(γ, pn)d, 4He(γ, pn)pn and 4He(γ, pp)nn reactions, carried out with photons of energies 80–131 MeV, are presented. The (γ, pn)d three-body-breakup cross section dominates the four-body-breakup cross section. The three-body-breakup cross section and the corresponding deuteron recoil-momentum spectrum are reasonably accounted for by a mechanism of photon absorption on correlated proton-neutron pairs. In contrast the four-body-breakup mechanism appears to have two components: absorption on correlated proton-neutron pairs and a more complex additional component which has a distribution similar to phase space. The data rule out substantial photon absorption on proton-proton pairs.

year	journal	country	edition	language
1991-10-01	Nuclear Physics A

https://doi.org/10.1016/0375-9474(91)90490-w

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