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The yield of the deexcitation gamma ray following inelastic proton scattering to the first excited states of 4BTi, 48Ti, "Cr, 54Fe, and 56Fe has been studied for proton energies between 2.5 and 3 MeV with energy resolution of approximately 1700 eV. For all targets except 54Fe, angular distributions of the gamma-ray yield have been measured as a means of assigning spins and parities to resonances observed in the excitation functions. A total of approximately 160 resonances have been observed and assigned in this way.
This work has shown the first excited state of Yr to have spin 2. In addition, the spacings of 3/2+ levels in the compound nuclei 47V, 51Mn, and %o are consistent with the dependences on neutron excess and shell structure observed in neutron total cross section measurements. There are also indications in the data of a maximum in the D-wave proton strength function in the neighborhood of mass number 47.
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Variousfeatures of synchrotron-Cerenkovradiationare illustrated in thecontextof the following situations: (1) the passage of high-energy electrons through gases, liquids, solids, and plasmas in the presence of magnetic fields; (2) the suppression of synchrotron X rays from high-energy electrons in t
Unitarity in all three channels for the TN system is used to show that a) one can, given the first LrrN partial waves and the 7dv total cross-sections, extrapolate to find the RN -+ 71~ waves, the whole amplitude, and the ?rN waves, in the unphysical regions; and this within absolute error bands, an