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An overview of the main directions of present-day studies with quasimonochromatic γ beams are discussed with an emphasis on the research opportunities which will be offered at the Extreme Light Infrastructure Nuclear Physics (ELI-NP) facility at Magurele near Bucharest in Romania. Experiments with γ beams at the extremes of high temperature and high neutron-to-proton ratios are outlined. Some of the experimental setups for nuclear structure, reaction and astrophysics studies, which are available at ELI-NP, are described. Perspectives for studies of exotic nuclei within the Gamma Factory experiment at CERN are discussed. The expected fission-fragment yields at the Gamma Factory are presented. The perspectives for nuclear structure studies with γ rays with orbital angular momentum are outlined. [ABSTRACT FROM AUTHOR]

Simulations providing estimates of the ELI-NP gamma-beam energy bandwidths and beam spot dimensions for the collimated beams, and expected fission rates with the narrow-width beams of bandwidth 0.3% and 0.5% on actinide targets, 238U and 232Th, are reported. These estimates support the feasibility of precise transmission resonance measurements with the narrow-width ELI-NP γ beams. The status of the design and construction of a state-of-the-art experimental array, consisting of four double-sided, Frisch-gridded Bragg ionization chambers, coupled to ΔE-E detectors, is reported. [ABSTRACT FROM AUTHOR]

Magnetic moment measurements of isomeric states in neutron-rich isotopes populated in photofission using γ-beam facility at the Extreme Light Infrastructure−Nuclear Physics (ELI-NP) laboratory aim at addressing many open questions related to the structure of the nuclei in A around 100 and 130 mass regions. The possibility of such measurements at ELI-NP is briefly discussed here using Geant4 Monte Carlo simulations. The present paper report the estimates of γ-beam profile at the target, fission fragment production rates and the possible target geometry. [ABSTRACT FROM AUTHOR]

An empirical parametrization for the production cross sections of 238U photofission fragments at low energies (Eγ<30 MeV) is developed. This parametrization, GIF238U, consists of three parts, namely, the photofission cross section, the mass yield, and the isobaric charge distribution. The photofission cross section is parametrized to reproduce measured data over a wide energy range. The mass yield distribution is described by the energy-dependent multimodal fission model. The isobaric charge distribution is improved, relative to other parametrizations, to describe many experimental data sets over a broad mass range. Comparisons with different measured 238U photofission data sets at various energies reveal that GIF238U is in very good agreement with measured elemental and mass yields and can accurately reproduce experimental isotopic yields. Production cross sections (yields) of photofission fragments calculated by this parametrization indicate that many neutron-rich nuclei approaching the r-process path can be accessed via photofission of 238U at radioactive-beam facilities. [ABSTRACT FROM AUTHOR]