arXiv subjects

D. L. Demin

Publications and source records attributed to D. L. Demin.

4 recordsLinked to original sources

arXiv2025

Experimental and theoretical research of photoneutron reactions in the 181Ta nucleus

Bremsstrahlung fluxes for irradiating tantalum samples were formed by irradiating a tungsten converter with an electron beam with energy up to 130 MeV. The relative yields and flux-averaged cross-sections of multinucleon photonuclear reactions with the emission of up to 9 neutrons in 181Ta nuclei were determined. Monte Carlo simulations to study the yields of photonuclear reactions were performed using Geant4 and TALYS-2.0 codes. The obtained experimental results were compared with the available literature data and calculated results. The comparison showed that the values of the relative reaction yield and the flux-averaged cross-section coincide with the literature data, taking into account the different geometry of the experiments. The calculated results coincide with the experimental ones only for reactions with the emission of up to 5 neutrons from the nucleus.

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arXiv2024

Photonuclear reactions on $^{59}$Co at bremsstrahlung end-point energies of 40-130 MeV

Relative yields have been measured in the 40-130 MeV bremsstrahlung induced reactions of 59Co. The experiments have been performed with the beam from the electron linear accelerator LINAC-200 using the activation and off-line γ-ray spectrometric technique. The bremsstrahlung photon flux has been calculated with the Geant4 program. The cross sections were calculated by using computer code TALYS-1.96 with different models and are found to be in good agreement with the experimental data.

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arXiv2024

Interaction of photons with silver and indium nuclei at energies up to 20 MeV

The yields of photonuclear reactions in the 107Ag, 113In, and 115In nuclei have been measured. Monte Carlo simulations have been performed using the Geant4 code, and the results have been compared with the experimental ones. The isomeric ratios of the yields in the reactions 107Ag(γ,n)106m,gAg and 113In(γ,n)112m,gIn have been determined. The cross sections for the reactions 107Ag(γ,n)106gAg and 107Ag(γ,2n)105Ag at an energy of 20 MeV have been calculated on the basis of the experimental data.

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arXiv2002

Search for the Radiative Capture d+d->^4He+γReaction from the ddμMuonic Molecule State

A search for the muon catalyzed fusion reaction dd --> ^4He +γin the ddμmuonic molecule was performed using the experimental μCF installation TRITON and NaI(Tl) detectors for γ-quanta. The high pressure target filled with deuterium at temperatures from 85 K to 800 K was exposed to the negative muon beam of the JINR phasotron to detect γ-quanta with energy 23.8 MeV. The first experimental estimation for the yield of the radiative deuteron capture from the ddμstate J=1 was obtained at the level n_γ\leq 2\times 10^{-5} per one fusion.

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