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We discuss the role of photoneutron reaction data in nuclear physics and astrophysics in conjunction with the Coordinated Research Project of the International Atomic Energy Agency with the code F41032 (IAEA-CRP F41032). [ABSTRACT FROM AUTHOR]

We discuss the γ -ray strength function toward a unified understanding of (γ, n) and (n,γ) reactions and propose a novel technique of direct neutron-multiplicity sorting to resolve the long-standing discrepancy between the Livermore and Scalya data of partial photoneutron cross sections. [ABSTRACT FROM AUTHOR]

Using γ -ray beams for experimental nucleosynthesis study forms a new branch of nuclear astrophysics. I introduce typical experimental investigations and give a future prospect of this branch. [ABSTRACT FROM AUTHOR]

New data of total and partial (γ, xn) cross sections with x = 1-3 are proposed to be measured by direct neutron multiplicity sorting using Laser Compton scattering (LCS) gamma ray beams at the ELINP to solve long standing discrepancies between existing Lawrence Livermore National Laboratory (USA) and France Centre d'Etudes Nucleaires de Saclay photonuclear data. Pioneering experiments are currently performed at the NewSUBARU facility. We present here preliminary results on 209Bi(g,xn) cross section measurements. [ABSTRACT FROM AUTHOR]