Total photofission cross-section for U-238 as a substitute for the photon absorption cross-section in the energy range of the first baryon resonances

Frommhold, T.; Steiper, F.; Henkel, W.; Kneissl, U.; Ahrens, J.; Beck, R.; Peise, J.; Schmitz, M.

doi:10.1016/0370-2693(92)90084-H

Total photofission cross-section for U-238 as a substitute for the photon absorption cross-section in the energy range of the first baryon resonances

1992

4 pages

Published in:

Phys.Lett.B 295 (1992) 28-31

Published: 1992

DOI:

10.1016/0370-2693(92)90084-H

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Abstract: (Elsevier)

The total photofission cross section σ γ , F for 238 U has been measured as a substitute for the total photon absorption cross section σ tot in the energy range of the first baryon resonances (50⩽ E γ ⩽800 MeV). The experiments were performed at the tagging facility of the new 855 MeV Mainz Microton MAMI B using monochromatic photons and a sophisticated 4π-arrangement of position sensitive fragment detectors. The measured cross section agrees in the Δ-resonance region with previous results and the so-called universal curve α tot / A . In the energy region of the D 13 -resonance near 710 MeV resonancelike structure could be observed as is seen for the free proton.

photon nucleus: nuclear reaction
uranium: photofission
photon: tagged beam
tagged beam: photon
cross section: energy dependence
N(1520)
photon: absorption
absorption: photon
experimental results
Mainz Linac

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