|Author||Fujii, S. ♦ Sugimoto, O.|
|Source||United States Department of Energy Office of Scientific and Technical Information|
|Subject Keyword||NUCLEAR PHYSICS AND RADIATION PHYSICS ♦ ABSORPTION ♦ ANGULAR DISTRIBUTION ♦ ARGON 40 ♦ CHLORINE 39 ♦ COBALT 59 ♦ CROSS SECTIONS ♦ DIRECT REACTIONS ♦ ELECTRIC CHARGES ♦ ELECTRIC MOMENTS ♦ ELEMENTARY PARTICLES ♦ EMISSION ♦ EXCITATION ♦ GAMMA RADIATION ♦ GIANT RESONANCE ♦ IRON 58 ♦ NUCLEAR MODELS ♦ NUCLEAR REACTIONS ♦ NUMERICALS ♦ PHOTOFISSION ♦ PHOTONEUTRONS ♦ PHOTOPRODUCTION ♦ PROTONS ♦ RESONANCE|
|Abstract||The behavior of the EQ absorption cross section in the giant resonance region is discussed through the analysis of the angular distributions of emitted particles by using the direct interaction model. The difference between proton's and neutron's angular distributions is attributed to the difference between the effective charges of the proton and the neutron for EQ radiation. The excitation functions for the EQ absorption are computed for Ar<sup>40</sup>( gamma p)Cl<sup>39</sup> and Co<sup>59</sup>( alpha p)Fe<sup>58</sup>. It is pointed out that the integrated cross sections for the EQ absorption are favorable to explain the feature of the angular distributions and the excitation curves have a peak near the maximum energy of the giant resonance. The agreement between the results and the experiments for the angular distributions of the above reactions is good in part. On the whole, however, the ratio of the ED to the EQ absorption cross section is too small in comparison to that required rrom the experiments. The results of this model are discussed, and the direction of the modification is also indicated.|
|Learning Resource Type||Article|
|Publisher Department||Nihon Univ., Tokyo ♦ Hiroshima Univ.|
|Organization||Nihon Univ., Tokyo ♦ Hiroshima Univ.|
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