Cross-Sections of Some (n,2n) Reactions Induced by Reactor Fast Neutrons

Abstract

Cross-sections for (n, 2n) reactions induced in 2S Na, "Mn, "As, 89 Y, 127 I and 185 Re by reactor fast neutrons have been determined using the 68 Ni (n, p) 58 Co reaction as a monitor. In addition the reaction 64 Fe(n, p) H Mn was studied. Good agreement between results obtained in different irradiations has been obtained. ZusammenfassungDie Wirkungsquerschnitte von (n, 2n)-Reaktionen, die mit schnellen Reaktorneutronen in 23 Na, 55 Mn, 75 As, 8 "Y, m I und 185 Re induziert worden waren, wurden mit Hilfe der 68 Ni(n,p) 58 CoReaktion als Kontrolle bestimmt. Außerdem wurde die 54 Fe(n, p) 64 Mn-Reaktion untersucht. Es zeigte sich gute Über-einstimmung zwischen den bei verschiedenen Bestrahlungen erzielten Ergebnissen. R6sum£On a determine les sections efficaces des reactions (η, 2n) induites dans 23 Na, 55 Mn, ,5 As, 89 Y, 127

Cross-Sections of (n,p) Reactions Induced in Nickel Isotopes by Reactor Fast Neutrons

“…As flux monitoring reaction, S8 Ni(n, p) 68 Co was selected, because the cross-section of this reaction is supposed to be well known [5] and also because the reaction product B8 Co can be measured in the same samples as those of the reactions investigated. Furthermore, determination of chemical yield is not necessary, and errors due to possible inhomogeneity of the neutron flux are eliminated.…”