Abstract

The (p, γ) resonance is a good way to produce monoenergetic γ rays. It becomes an important tool for studying photonuclear reactions. In this work, 13C(p, γ)14N resonance is studied to produce 9.17 MeV γ ray using the 2 × 1.7 MV tandem accelerator at CIAE. The flux of 9.17 MeV γ was determined to be 2.3 × 105/s. 197Au photoneutron cross section was measured to be 45.4 ± 6.9 mb under the irradiation of 13C(p, γ)14N resonance γ -source. The value is close to the previous results. It certificates that we have developed an experimental method for photonuclear reaction study.

Highlights

  • Experimental studies of photonuclear reactions have opened the way for a variety of important applications

  • It is widely accepted that the bulk of the nuclei heavier than iron have been synthesized by neutron capture in the astrophysical r and s processes

  • Its (γ, n) cross section has been widely measured around the Giant Dipole Resonance (GDR) by several different methods in the last decades [17,18,19,20,21,22,23], and recently a very precise measurement was made in the entire energy range using a quasi-monochromatic γ-source produced in laser-induced Compton backscattering with relativistic electrons [21]

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Summary

Introduction

Experimental studies of photonuclear reactions have opened the way for a variety of important applications. The production mechanism for these so-called p-nuclei [6] is photodisintegration in the astrophysical γ process by successive (γ, n), (γ, p), and (γ, α) reactions The difficulty among these studies discussed above is that photonuclear cross-section data are scarce in Giant Dipole Resonance (GDR) energy range [7, 8], and especially there is a lack of data in some important cases. Its (γ, n) cross section has been widely measured around the GDR by several different methods in the last decades [17,18,19,20,21,22,23], and recently a very precise measurement was made in the entire energy range using a quasi-monochromatic γ-source produced in laser-induced Compton backscattering with relativistic electrons [21].

Experiment
Experimental results
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