Quadrupole Radiation in Fast-Neutron Capture on<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">Ca</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>40</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>

Wender, S.A.; Roberson, N. R.; Potokar, M.; Weller, H. R.; Tilley, D. R.

doi:10.1103/physrevlett.41.1217

Cited by 23 publications

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References 21 publications

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“…The measured values for the forward-to-backward asymmetry are small, indicating weak effects on the angular distributions from interference between dipole-and quadrupole capture. This result is consistent with similar measurements and calculations for the 4~ reaction [9]. In both cases the T< part of the giant dipole resonance and the isoscalar quadrupole resonance nearly coincide in energy.…”

Section: Macroscopic Model Analysissupporting

confidence: 93%

Fast neutron radiative capture in silicon

et al. 1984

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Using the 2SSi(n, 7)29Si reaction, transitions to the ground state and first excited state in 29Si have been studied in the neutron energy range 3-14 MeV with improved neutron energy resolution (of about 100 keV). The 90 ~ cross sections show considerable structure in the entire neutron energy range. Comparison with theoretical calculations shows that compound-nucleus and direct-semidirect processes account for the non-resonant part (smoothly varying part) of the cross section. A microscopic model is, however, required to describe the resonance structure. Continuum shell-model calculations have proven to be a very promising means towards a better understanding of the capture process in, and below, the giant resonance region in light nuclei. The angular distributions of gamma rays in the neutron energy range 8-14 MeV indicate that the capture reaction is mainly of direct character and that the effect of interference between the electric dipole and isoscalar quadrupole resonance is weak.

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Section: Macroscopic Model Analysissupporting

confidence: 93%