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The γ-ray strength function is a key statistical nuclear ingredient to the s-, r- and p-process nucleosynthesis of heavy elements. It has recently become apparent that extra γ-ray strengths that appear near neutron threshold on top of the low-energy tail of GDR play an important role in neutron capture and photodisintegration. We discuss extra γ-ray strengths of pigmy E1 and giant M1 nature based on the latest experimental photoneutron cross sections measured with laser Compton scattering γ-rays. [ABSTRACT FROM AUTHOR]

The (7Li,7Be) charge-exchange spin-flip reaction was for the first time used to deduce the distribution of the B(M1) reduced matrix elements for the photodisintegration of deuteron from the analogous B(GT) distribution. The obtained distribution is in agreement with recent photodisintegration measurements and effective-field calculations. © 2005 American Institute of Physics [ABSTRACT FROM AUTHOR]

γ-ray beams at synchrotron radiation facilities will give us unprecedented opportunities to study photonuclear reactions of astrophysical interest. We report our photonuclear reaction studies and give a prospect of a fertile research field to be pioneered in the next 5 years. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR]

Photodisintegration cross sections were measured for deuterium with Laser Compton scattering γ beams at Eγ = 2.3 – 4.6 MeV. The experimental evaluation of R(E) = Naσv for the p(n,γ)D reaction was performed in the energy region relevant to big bang nucleosynthesis (BBN) by using the present data combined with the preceding data. The result confirms the past theoretical evdaluation with 6% uncertainty. The reaction rate for the p(n,γ)D reaction is presented for the BBN in the precision era. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR]

Photoneutron cross sections for three Pb isotopes (206Pb, 207Pb, 208Pb) near neutron threshold were measured with the laser inverse-Compton scattering gamma rays at the National Institute of Advanced Industrial Science and Technology. The cross section data are presented. [ABSTRACT FROM AUTHOR]

M1 and E1 transition cross sections in the D(y→, n) reaction were separately determined by measuring the analyzing power for emitted neutrons with linearly-polarized γ rays at four energies between 2.26 MeV and 3.70 MeV near reaction threshold at 2.224 MeV. We compared the experimental result with the JENDL evaluated data. [ABSTRACT FROM AUTHOR]

The article reports on the result of the study which focuses on measuring the strength of tin (Sn) photoneutrons. The strength of 116Sn and 117 were measured with the utilization of the TALYS reaction code, Lorentzian model and Skyrme HFB plus quasiparticle random phase approximation (QRPA) model. It was found that Sn has low-lying strength based on the data provided by nuclear resonance fluorescence.