Excitation Functions Of (N,P) Reactions in the Region 13.75 to 15 Mev for Ti, Fe and Ni Isotopes

New Production Routes for Medical Isotopes64Cu and67Cu Using Accelerator Neutrons

“…Here, the quoted uncertainty is the result of the combined uncertainties of statistical and systematic errors, such as the -ray yield statistics (4.9%), the -ray detection efficiency of the HPGe detector (3.0%), the -ray emission probability (5.6%), and the 93 Nb(n,2n) 92m Nb cross section for the normalization of the neutron intensity (2.5%), respectively. The present result agrees with those obtained by Konno et al 24) and Ghorai et al 25) (the result at 15.2 MeV) within experimental uncertainty, but slightly differs from those obtained by Viennot et al 26) and Kielan and Marcinkowski,27) as shown in Table III. This difference, however, could be solved using the latest result of -ray emission probability, as discussed below.…”

“…This difference, however, could be solved using the latest result of -ray emission probability, as discussed below. Namely, Konno et 25) Viennot et al, 26) and Kielan and Marcinkowski. 27) E , b, and denote the -ray energy used to determine the cross section, the -ray emission probability, and the cross section, respectively.…”

“…The two symbols of à and Ãà indicate the renormalized cross sections using the latest value of the -ray emission probability and the renormalized cross section using the cross section of the 68 Zn(n,x) 67 Cu reaction obtained by Konno et al, 24) respectively. (14) 185 (8) 180 (10) 152 (9) 171 (10) 24) ) and a natural Zn sample (Ghorai et al, 25) Viennot et al, 26) and Kielan et al 27) ). The latter groups derived { 67 Zn(n,p)-67 Cu} by correcting for the contribution of { 68 Zn(n,x) 67 Cu} using the result (2:1 AE 0:3 mb) of Qaim,28) 34) Ribansky et al, 35) and Ikeda et al, 36) within experimental uncertainty.…”

Measurement of 67Zn(n,p)67Cu, 64Zn(n,2n)63Zn, 89Y(n,γ)90mY and 89Y(n,2n)88Y reaction cross sections at the neutron energy of 14.54 MeV with covariance analysis

“…The cross sections data for 67 Zn(n,p) 67 Cu [6][7][8][9], 64 Zn(n,2n) 63 Zn [1,3,7,[10][11][12][13], 89 Y(n,γ) 90m Y [4,[14][15][16][17], 89 Y(n,2n) 88 Y [5,7,10,[18][19][20][21][22][23] reactions are available around the neutron energy of 14 MeV. However, there is comparably huge disagreement [1,8,9,17] and ambiguity in the experimental data, which is most probably due to various nuclear parameters like half-life, γ-ray abundances, monitor cross section and types of detectors used. The neutron induced cross section data for nat Zn and 89 Y is not sufficiently precise for these applications.…”

Pre-equilibrium emission in neutron induced reactions on54,56Fe

“…Its consideration compensates the shortcoming of the GDH model concerning the alpha particle emission. [41] (numerical data are from the computerized exchange format EXFOR [42] files) accounting for particle-hole state densities, and the (p=0.2 value for the e-cluster preformation factor were used. The free parameter K of the internal transition matrix element has been derived analyzing the proton emission spectra at E,==_ 14.8 MeV and the (n,p) reaction excitation functions.…”