Variation of Bremsstrahlung Intensity With Angle Near the High-Energy End of the Spectrum

We have measured the relative intensity of thin-target bremsstrahlung as a function of bremsstrahlung angle at the high-energy end of the spectrum in the angular range from 0.0 to $3.0 \frac{m{c}^2}{E}$ for peak energies of $E=375\mathrm{} \mathrm{and} 550$ MeV. Our measurements are compared with the theories of Schiff and of Olsen and Maximon; there is substantial disagreement.