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  • 1
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract An emerging, exciting area of nuclear science is the use of radioactive nuclear beams to study chemical and physical phenomena. One uses the radioactive products (ms〈t1/2〈y) of nuclear reactions induced by charged particles or nuetrons to induce secondary reactions or to act as radiotracers. The use of such beams enhances the tools of the radioanalytical chemist. Applications of such beams in materials science (where the beams act as tracers), and the synthesis of new nuclei (especially with Z≥104) are described.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Differential recoil range distributions have been measured for heavy-reaction products ranging from Te(Z=52) to quasielastic transfer products near the charge and mass of the targets for the reactions of 276 MeV48Ca+238U, 237MeV and 250 MeV40Ar+238U, and 259 MeV40Ar+197Au. The measured recoil range distributions for the40Ar+197Au reaction agree with range distributions calculated from the known projectile-like fragment angular distributions for this reaction. The angular distributions of recoil products formed in the uranium target reactions are deduced and show that the products in the75Re to83Bi region have backward peaked angular distributions characteristic of deep inelastic reactions. The heavy product angular distributions smoothly vary from a (1/sinθ) shape to an exponential shaped backward peak as the atomic number of the product increases from 52 to 83. The trend in the deduced angular distributions for those elements for which recoil range distributions were determined in the40Ar+197Au reaction and the 250 MeV40Ar+238U reaction is similar, suggesting that just as for the Ar+Au system the composite system for the uranium target reaction is also not fully equilibrated along the mass asymmetry coordinate. These conclusions show that the fraction of the total reaction cross section resulting in complete fusion must be re-evaluated for the40Ar+238U reaction and similar heavy-target reactions.
    Type of Medium: Electronic Resource
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