The γ-ray emission from the dynamical dipole formed in heavy-ion collisions during the process leading to fusion was measured for the N/Z asymmetric reaction 16O+116Sn at beam energies of 8.1 and ...15.6 MeV/nucleon. High-energy γ-rays and charged particles were measured in coincidence with the heavy recoiling residual nuclei. The data are compared with those from the N/Z symmetric reaction 64Ni+68Zn at bombarding energies of 4.7 and 7.8 MeV/nucleon, leading to the same CN with the same excitation energies as calculated from kinematics. The measured yield of the high-energy γ-rays from the 16O-induced reaction is found to exceed that of the thermalized CN and the excess yield increases with bombarding energy. The data are in rather good agreement with the predictions for the dynamical dipole emission based on the Boltzmann–Nordheim–Vlasov model. In addition, a comparison with existing data in the same mass region is performed to extract information on the dipole moment dependence.
The 9Be(d,n)10B reaction was proposed in the past as a neutron source for Accelerator-Based Boron Neutron Capture Therapy. Based on numerical models and scarce experimental information about the ...neutron spectra, it was proven that low energy deuterons on a thin target may provide neutron beams of therapeutic quality. In particular, an 8–9 μm target bombarded by 1.45 MeV deuterons presents itself as a convenient option. The aim of this work is to provide experimental validation to these numerical models. For this purpose, neutron spectra at 0°, 35°, 60°, 90° and 123° from a (9 ± 1) μm 9Be target were measured at the CN accelerator of the Laboratori Nazionali di Legnaro. A micro-time projection chamber (μ-TPC) was used as a neutron spectrometer.
The average energy and multiplicity of prompt
γ
-rays from slow neutron-induced fission of
235
U have been measured using the STEFF spectrometer at the neutron time-of-flight facility n_TOF. The ...individual responses from 11 NaI scintillators were corrected for multiple
γ
-ray interactions, prompt fission neutrons and background counts before being deconvolved to estimate the emitted spectrum of prompt fission
γ
-rays. The results give an average
γ
-ray energy
E
¯
γ
of 1.71(5) MeV and multiplicity
ν
¯
γ
of 2.66(18) considering
γ
-rays emitted within the energy range 0.8–6.8 MeV. The n_TOF data has a slightly larger
E
¯
γ
and smaller
ν
¯
γ
than other recent measurements, however the product of the two is in agreement within quoted uncertainties.
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