LXXIV International conference Nucleus-2024: Fundamental problems and applications

POSSIBILITIES OF PHOTONUCLEAR EXPERIMENTS AT Eγ=(1–4) MeV ON COLLIMATED γ-SOURCES FROM COMPTON BACKWARD-SCATTERING

2 Jul 2024, 15:00

20m

Second floor Hall (BLTP)

Oral Experimental and theoretical studies of nuclear reactions

Speaker

Dr Leonid Dzhilavyan (Insnitute for Nuclear Research of RAS)

Description

The possibilities of photonuclear experiments at $E_{\gamma }=(1–4)$ MeV on collimated gamma-sources from Compton backward-scattering of laser radiation on beams of accelerated electrons are considered. The following items are discussed: operation parameters of such gamma-sources; monitoring of their gamma-beams; types of possible photonuclear experiments, including nuclear resonance fluorescence ones (see, e.g., [1]), total absorption ones using transmission method (see, e.g., [2]), and especially experiments on inelastic scattering of gamma-quanta with population of metastable states of nuclei. As an example, for the last case, there are considered cross-sections of the reaction ${}^{115\mathrm{g}}$In ($\gamma$, ${\gamma }^{\prime }$) ${}^{115\mathrm{m}}$In ($E_{exc}=336$ keV; T${}_{1/2}$ = 4.486 h) in dependence on $E_{\gamma }$ obtained: a – in [3]; b – in [4] (see fig. 1).

1. S.R.Johnson et al. // Phys. Rev. C. 2023. Vol. 108, 024315.
2. B.S.Dolbilkin et al. // Nucl. Phys. 1965. Vol. 72. P. 137.
3. L.Z.Dzhilavyan. // Phys. Atomic Nuclei. 2015, Vol. 78, P. 624.
4. W.Tornow et al. // Phys. Rev. C. 2018. Vol. 98, 064305.