The gamma rays following ($p, p^{\prime }\gamma$) or ($p, n\gamma$) reactions in seven isotopes have been studied with a bent quartz-crystal spectrograph. The intense gamma-ray sources necessary for such experiments were provided by bombarding various target materials with large proton-beam currents from the $A-48\mathrm{}$ accelerator. The following reactions and associated gamma rays have been observed: ${\mathrm{F}}^{19}(p, p^{\prime }\gamma )$, 109.87±0.04 kev; ${\mathrm{Ti}}^{49}(p, n\gamma ){\mathrm{V}}^{49}$, 90.65±0.02 kev, 62.29±0.01 kev; ${\mathrm{Mn}}^{55}(p, p^{\prime }\gamma )$, 125.87±0.05 kev; ${\mathrm{Ni}}^{61}(p, p^{\prime }\gamma )$, 67.40±0.01 kev; ${\mathrm{Cu}}^{65}(p, n\gamma ){\mathrm{Zn}}^{65}$, 53.93±0.01 kev, 61.20±0.01 kev, 115.09±0.04 kev; ${\mathrm{Ge}}^{73}(p, p^{\prime }\gamma )$ 67.03±0.01 kev, and ${\mathrm{Se}}^{80}(p, n\gamma ){\mathrm{Br}}^{80}$ 37.05±0.01 kev.

• Received 2 May 1958

DOI:https://doi.org/10.1103/PhysRev.112.532