Cross-section measurements for 68Zn(p,2p)67Cu and 68Zn(p,2n)67Ga reactions using a newly developed separation method for the superposed gamma-ray spectra

Abstract

We have developed a new analytical peak separation analysis for superposed gamma-ray peaks on ^{67}Cu and ^{67}Ga to measure the ^{68}Zn(p,2p)^{67}Cu and ^{68}Zn(p,2n)^{67}Ga reactions, unlike in most previous works that were employing a radiochemical separation to measure them. Based on the nuclear data such as the gamma-ray intensity and the half-life for each nuclide, we may develop a new analytical method that enables us to estimate the respective counts arising from each nuclide, thereby obtaining the nuclear reactions. The newly developed analytical method can universally be applied to separate the superposed gamma-ray spectra of any two nuclides, especially superior in separating the nuclides with different half-lives. In comparison with the data in the literature, the two reactions in the present work are in good agreement with those of some previous works. In addition, we compared the present ^{68}Zn(p,2n)^{67}Ga reaction without the peak separation to the data in the literature without the chemical separation, and find that a good agreement is evident, enhancing the reliability of the ^{68}Zn(p,x)^{65}Zn and ^{68}Zn(p,3n)^{66}Ga reactions, which are further measured in the present work