Resonances in the α-induced fission of neon 20

Lassen, N.O.

doi:10.1016/0031-9163(62)90336-0

Cited by 12 publications

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“…These data have been obtained from excited states of the break-up system identified in inelastic-scattering experiments [14-191 and in resonant elastic scattering 1201, electrofission [21][22][23]. photofission [24], and alpha-particle-induced fission [25] experiments. The yield for thc break-up channel of these light fissioning systems is very low (tens of nb [26]), and the nature of the process, known as 'quasimolecular' resonance states, appears to be entirely different in character from the process governing the fission of more complex systems, suggesting the existence of highly clustered states of the &sioning system (see, for instance, [Zl]).…”

Section: Introductionmentioning

confidence: 99%

Fission of²⁷Al nucleus by 69 MeV monochromatic photons

Tavares¹,

Martins²,

Moreira³

et al. 1993

J. Phys. G: Nucl. Part. Phys.

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A b s b d . Monochromatic photon beams have been used to investigate lhe photofission of "AI at 69 MeV with plastic nuclear-track detectors. The measured fissility was found to he (5.7 * 1.1) X lo-'. Wis result, along with the available data for "' Sm and '74Yb nuclei taken at the same energy, has been interpreted within the frameaork of a two-step model for the photofission reaction. According to this model the incoming photon is considered to he absorbed by a neutron-proton pair, and then followed by an evaporation-fission competition for the exiled residual nucleus The measured fissility values are seen IO be in satisfactory agreement with the calculated ones, and the predictions from the model are confirmed, specially in the region of light fissioning systems.

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