6533b7dbfe1ef96bd1270959

RESEARCH PRODUCT

C(,pn) photon asymmetry for Eγ=180–340 MeV

D. P. WattsJ. F. ArneilS.j. HallJ. R. M. AnnandS. FranczukM. SauerT. HehlD. G. IrelandJ. C. McgeorgeS. OberkirschP.d. HartyF. A. NatterD. BranfordR. BeckJ. AhrensR.o. OwensK. LivingstonJan RyckebuschJ. D. KellieP. GrabmayrA. SetteleI. J. D. MacgregorC. J. Y. Powrie

subject

PhysicsNuclear and High Energy PhysicsMissing energyPhotonmedia_common.quotation_subjectNuclear TheoryAsymmetryNuclear physicsMagnitude (astronomy)Atomic physicsNuclear ExperimentNucleonMicrotronmedia_common

description

The photon asymmetry (Σ) of the 12C(,pn) reaction has been measured using linearly polarised tagged photons at the Mainz microtron MAMI for Eγ=180–340 MeV. The data have been analysed in separate missing energy (Em) regions corresponding to the ejection of nucleons from (1p)2 and (1p)(1s) shells. The measured Σ values for both Em regions are smaller in magnitude than corresponding 2H data, but the (1p)2 results have a similar Eγ dependence. Calculations of direct two-nucleon emission overestimate the magnitude of Σ at all photon energies.

yearjournalcountryeditionlanguage
1999-03-01Physics Letters B
https://doi.org/10.1016/s0370-2693(99)00184-7