(γ,n) study of the isovector quadrupole resonance in 40Ca
Research output: Contribution to journal › Article
The forward-to-backward asymmetry of neutrons emitted in the 40Ca(γ,n0) reaction was measured at photon energies in the range of 27–50 MeV. An energy-dependent asymmetry was observed that is interpreted as evidence of interference between the isovector quadrupole resonance and the giant dipole resonance. Data analysis in terms of semiclassical and direct-semidirect models estimate the isovector quadrupole resonance to be at an excitation energy of 31.0±1.5 MeV, with a width of 16.0±1.5 MeV, and exhausting most of the energy-weighted sum rule for the isovector quadrupole resonance.
|Research areas and keywords||
Subject classification (UKÄ) – MANDATORY
|Journal||Physical Review C: covering nuclear physics|
|Publication status||Published - 1997|
1994/01/01 → 2007/12/31