Investigation of photoneutron reactions close to and above the neutron emission threshold in the rare earth region

Abstract

We have investigated the photoneutron cross section of the isotopes ${}^{148,150}$Nd, ${}^{154}$Sm, and ${}^{154,160}$Gd close to the neutron emission threshold in photoactivation experiments at the Darmstadt superconducting electron linear accelerator S-DALINAC. Naturally composed targets were activated with a high-intensity bremsstrahlung beam at various energies and the reaction yields have been determined by measuring the activity of the produced radioactive isotopes with HPGe detectors. The results are compared to two different statistical model calculations.

arXiv commentAccepted for publication in Physical Review C

References in corpus (7)

• Astrophysical Reaction Rates From Statistical Model Calculations
• Nuclear Level Density and the Determination of Thermonuclear Rates for Astrophysics
• Experimental simulation of a stellar photon bath by bremsstrahlung: the astrophysical $\gamma$-process
• Measurement of the (gamma,n) reaction rates of the nuclides 190Pt, 192Pt, and 198Pt in the astrophysical gamma-process
• The s-process branching at 185W
• Systematic study of (g,n) reaction rates for Z>=78 isotopes
• ${}^{187}$Re(\gamm,n) cross section close to and above the neutron threshold

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