New Data on Photoneutron Reaction Cross Sections for [sup.76,78,80,82]Se Nuclei

• Published in: Physics of atomic nuclei 2019-01, Vol.82 (1), p.13
• Main Authors: Varlamov, V.V, Davydov, A.I, Ishkhanov, B.S
• Format: Article
• Language: English
• ISSN: 1063-7788; 1562-692X
• DOI: 10.1134/S1063778819010186

The problem of reliability of the cross section data obtained for partial photoneutron reactions on [sup.76,78,80,82]Se nuclei in beams of quasimonoenergetic annihilation photons by means of neutron multiplicity sorting is discussed by employing objective physical criteria. It is shown that, because of substantial systematic uncertainties, experimental data on the ([gamma], 1n) and ([gamma], 2n) cross sections are unreliable. New data satisfying the reliability criteria are obtained for the partial photoneutron reaction cross sections for [sup.76,78,82]Se nuclei by an experimental-theoretical method for evaluating such cross sections and are compared with experimental data and with data evaluated earlier for the isotope [sup.80]Se. The evaluated integrated cross sections for the total photoneutron reactions on [sup.76,78,80,82]Se nuclei are compared with the predictions of the Thomas-Reiche-Kuhn classical dipole sum rule.