The cross sections for production of ${}_{}{}^{39}{}_{}{}^{}\mathrm{Cl}$, ${}_{}{}^{38}{}_{}{}^{}\mathrm{Cl}$, ${}_{}{}^{37}{}_{}{}^{}\mathrm{S}$, ${}_{}{}^{34m}{}_{}{}^{}\mathrm{Cl}$, ${}_{}{}^{29}{}_{}{}^{}\mathrm{Al}$, ${}_{}{}^{28}{}_{}{}^{}\mathrm{Al}$, ${}_{}{}^{28}{}_{}{}^{}\mathrm{Mg}$, ${}_{}{}^{27}{}_{}{}^{}\mathrm{Mg}$, ${}_{}{}^{24}{}_{}{}^{}\mathrm{Na}$, ${}_{}{}^{22}{}_{}{}^{}\mathrm{Na}$, ${}_{}{}^{18}{}_{}{}^{}\mathrm{F}$, and ${}_{}{}^7{}_{}{}^{}\mathrm{Be}$ from the proton spallation of argon at 310, 425, and 578 MeV are reported. Experimental production rates and experimental production ratios of the various radioisotopes to ${}_{}{}^{38}{}_{}{}^{}\mathrm{Cl}$ are compared to theoretical spallation yield calculations. Applications of the cross sections to health physics problems associated with high-energy accelerators and to studies of atmospheric processes are discussed.

• Received 6 February 1970

DOI:https://doi.org/10.1103/PhysRevC.1.1955