Excitation Functions of some Neutron Threshold Reactions on ⁸⁹Y in the Energy Range of 7.8 to 14.7 MeV

Cross sections and isomeric cross-section ratios in the interactions of fast neutrons with isotopes of mercury

“…For ascertaining the constancy of the neutron flux, a constant check of the D 2 gas pressure in the cell and of the deuteron beam current on the target was performed. The neutron flux density effective during each irradiation was determined via two monitor reactions, namely, 56 Fe(n, p) 56 Mn (T 1/2 = 2.58 h, E γ = 847 keV, I γ = 98.9%), and 27 Al(n, α) 24 Na (T 1/2 = 14.97 h, E γ = 1369 keV, I γ = 100%). The cross sections of the monitor reactions were taken from the International Reactor Dosimetry File [24].…”

“…The count rate of each γ ray was corrected for coincidence summing effect, geometric effect of the HgCl 2 sample, and γ -ray selfattenuation in the sample. Furthermore, in order to determine the counting efficiency for the extended source placed directly on the end cap of the detector, a radioactive source especially prepared was used as in two earlier cases [27,28]. For this purpose, 10 mg samples of HgCl 2 and Eu 2 O 3 were irradiated using a 14 MeV d(Be) neutron source, and the induced activity in each sample was assayed via γ -ray spectrometry.…”

Fission spectrum averaged cross section measurements of some neutron threshold reactions of relevance to medical radionuclide production

“…Typical individual uncertainties were estimated as described in the literature [cf. 42,43]; they are given in Table 1. The overall error for each reaction cross section was obtained by summing the individual errors in quadrature.…”

Therapeutic radionuclides and nuclear data

“…between 2 and 6 MeV. The excitation functions of the 67 Zn(n, p) 67 Cu and 89 Y(n, p) 89 Sr reactions, measured radiochemically [15,16], are shown in Fig. 3.…”