Photodisintegration of Deuterium at Low Energies: Measurements of Cross Section and Fore-Aft Asymmetries Between Eγ of 2.44 and 4 MeV at the High Intensity γ-Ray Source (HIγS)

Details Photodisintegration of Deuterium at Low Energies: Measurements of Cross Section and Fore-Aft Asymmetries Between Eγ of 2.44 and 4 MeV at the High Intensity γ-Ray Source (HIγS) Photodisintegration of Deuterium at Low Energies: Measurements of Cross Section and Fore-Aft Asymmetries Between Eγ of 2.44 and 4 MeV at the High Intensity γ-Ray Source (HIγS)

Apr 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aps..aprr15002a&link_type=abstract

American Physical Society, 2008 APS April Meeting and HEDP/HEDLA Meeting, April 11-15, 2008, abstract #R15.002

Astronomy and Astrophysics

Astrophysics

Scientific paper

Data were taken recently at HIγS to obtain cross section and fore-aft asymmetry measurements in photodisintegration of the deuteron in the energy region of astrophysical importance. Linearly polarized γ-rays (δE/E ˜3 %) were incident on a thin D2O target and the outgoing neutrons were detected using three Li-glass detectors placed in the plane of polarization at center-of-mass scattering angles (θ) of 54^o, 88^o, and 125^o. A preliminary analysis indicates small, but non-zero, asymmetries. An outline of the analysis to extract asymmetry and cross sections within an error of ˜ 10 % will be presented. The acquisition and analysis of data used to extract the efficiency of the Li-glass detectors will also be presented. The significance of the asymmetry and cross section measurements will be discussed.

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