SCATTERING OF 43-Mev $alpha$ PARTICLES BY NUCLEI
Journal Article
·
· Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D
The differential scattering cross sections for the elastic scattering of 43-Mev alpha particles by Zn. Ag, Rh, and Au are obtained over the angular range from 12 to 55 deg . The absolute errors in the cross sections are estimated to be less than 2% over most of the angular range. The group structure in the inelastic spectrum observed with protons and deuterons is also observed with alpha particles. In the spectra of Ag, Rh, and Zn, one group near 2.7 Mev was observed. In Al, V, and Ni a number of groups were observed. In Au and Ta no groups could be resolved. Angular distributions were obtained for the 2.5-Mev group in Rh and Ag and the 2.8-Mev group in Zn. In the case of the 2.8-Mev group in Zn, the angular distribution shows a very marked diffraction pattern. The data were fitted with Butler's theoretical expression modified to eliminate the assumption that the scattering of 43-Mev alpha particles by nucleons is isotropic in the center-of-mass system. It is shown that this assumption can be easily eliminated in the formal treatment. A comparison with the angular distributions obtdined for the 1.04-Mev 2/sup +/ level in Zn with both 43-Mev alpha particles and 21.6-Mev deuterons indicates that 1 =3 is the most plausible assignment for the 2.8-Mev group. (auth)
- Research Organization:
- Argonne National Lab., Lemont, Ill.
- NSA Number:
- NSA-14-012232
- OSTI ID:
- 4146537
- Journal Information:
- Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 117; ISSN PHRVA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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