Excitation functions for ( $p, n$ ) reactions to 25 MeV on ${}^{63}{Cu}$ , ${}^{65}{Cu}$ , and ${}^{107}{Ag}$

1 May 1974

journal article
research article
Published by American Physical Society (APS) in Physical Review C

Vol. 9 (5) , 1819-1830
https://doi.org/10.1103/physrevc.9.1819

Abstract

Absolute cross sections for the (

p, n

) reactions on

{}^{63}{Cu}

{}^{65}{Cu}

, and

{}^{107}{Ag}

at proton energies from 2.5 to 25 MeV were determined by the activation method. Metal foil targets of natural isotopic abundance were used; therefore, the results for

{}^{63}{Zn}

above 22.3 MeV and for

{}^{107}{Cd}

above 18.8 MeV include contributions from (

p, 3 n

) reactions. Beam intensities were measured with a Faraday cup. Disintegration rates of the product nuclei were determined by assaying their

γ

rays with calibrated Ge(Li) detector systems. Comparisons of the present cross sections are made with a complete compilation of previous measurements and with calculations based on a Monte Carlo intranuclear-cascade-statistical-evaporation model. Half-lives for

{}^{63}{Zn}

and

{}^{107}{Cd}

were determined to be 38.0 ± 0.1 min and 6.50 ± 0.02 h, respectively.

Keywords

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Excitation functions for (p,n) reactions to 25 MeV onCu63,Cu65, andAg107

Abstract

Keywords

Excitation functions for ( $p, n$ ) reactions to 25 MeV on ${}^{63}{Cu}$ , ${}^{65}{Cu}$ , and ${}^{107}{Ag}$