Reliable Cross Sections of Partial Photoneutron Reactions on 188,189Os Isotopes Free of Neutron Multiplicity Sorting Problemsстатья
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Дата последнего поиска статьи во внешних источниках: 28 мая 2015 г.
Аннотация:Experimental data on p[artial photoneutron reaction cross sections obtained for 188,189Os isotopes using quasimo-noenergetic annihilation photons and method of neutron multiplicity sorting were analyzed. Using the special criteria – transitional multiplicity sorting functions Fi = SIG(g ,in)/SIG(g, xn), ratios of correspondent partial reaction cross section to the total neutron yield reaction cross section SIG(g, xn) = SIG(g, 1n) + 2SIG(g, 2n) + 3SIG(g, 3n) + … free from the prob-lems of experimental obtaining of neutron multiplicity sorting that was shown that experimental data were obtained with significant systematic uncertainties. New cross section data for 188,189Os isotopes for partial photoneutron reac-tions (g, 1n), (g, 2n), (g, 3n) and total photoneutron reaction (g, sn) were evaluated in the frame of proposed experi-mentally-theoretical method. That was shown that the reason of significant systematic uncertainties of experimental partial reaction cross sections is complication of connection of neutron multiplicity with their kinetic energy