CROSS-SECTIONS OF PHOTONUCLEAR REACTIONS  ON natМо TARGETS AT END-POINT BREMSSTRAHLUNG ENERGY  UP TO Еγmax = 100 МeV

Vodin, A. N.; Deiev, O.S.; Timchenko, I. S.; Olejnik, S.M.; Kushnir, V.A.; Mytrochenko, V.V.; Perezhogin, S.O.; Bocharov, V.O.

doi:10.46813/2021-133-098

Cited by 7 publications

(2 citation statements)

References 10 publications

(10 reference statements)

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“…The dead time for γquanta detection varied between 0.1…5%. The absolute detection efficiency for γ-quanta of different energies was obtained using a standard set of γ-quanta sources: 241 Am, 133 Ba, 60 Co, 137 Cs, 22 Na, 152 Eu.…”

Section: с Experimental Proceduresmentioning

confidence: 99%

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PHOTONUCLEAR REACTIONS CROSS-SECTIONS AT ENERGIES UP TO 100 MeV FOR DIFFERENT EXPERIMENTAL SETUPS

Deiev¹,

Timchenko²,

Olejnik³

et al. 2022

Problems of Atomic Science and Technology

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In experiments on the electron linac LUE-40 of RDC “Accelerator” NSC KIPT, the flux-averaged cross-sections σ(Еγmax)exp of photonuclear reactions 100Mo(γ,n)99Mo, 27Al(γ,x) 24Na, 93Nb(γ,n)92mNb, 93Nb(γ,3n)90Nb, and 181Ta(γ,n)180gTa were measured using the γ-activation technique. The theoretical flux-average cross-sections σ(Еmax)th were computed using the partial cross-section σ(Е) values from the TALYS1.9-1.95 codes and bremsstrahlung γ-flux calculated using GEANT4.9.2. Two different experimental setups were used in the experiments: an aluminum electron absorber and a deflecting magnet to clean the bremsstrahlung γ-flux from electrons. A comparison of the flux-average cross-sections measured for two experimental setups was performed. The possibility of using the reactions 100Mo(γ,n)99Mo,27Al(γ,x)24Na, 93Nb(γ,n)92mNb, 93Nb(γ,3n)90Nb, and 181Ta(,n)180gTa as monitors of the bremsstrahlung γ-flux for the energy range 30…100 MeV was investigated.

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Section: с Experimental Proceduresmentioning

confidence: 99%

“…To date, for example, to monitor the flux of quanta, the following reactions 197 Au(γ,n) 196 Au [20], 65 Cu(γ,n) 64 Cu [5,21], 100 Mo(γ,n) 99 Mo [22][23][24] are used. These reaсtions have reliable experimental cross-section data in the literature [25][26][27].…”

Section: Introductionmentioning

confidence: 99%

PHOTONUCLEAR REACTIONS CROSS-SECTIONS AT ENERGIES UP TO 100 MeV FOR DIFFERENT EXPERIMENTAL SETUPS

Deiev¹,

Timchenko²,

Olejnik³

et al. 2022

Problems of Atomic Science and Technology

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Photoproduction of the 55−57Co nuclei on natNi at the bremsstrahlung end-point ene

Timchenko,

Deiev,

Olejnik

et al. 2024

Atomic Data and Nuclear Data Tables

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Production of $${^{180\textrm{m}}}$$Hf in photoproton reaction $${^{181}}$$Ta$$(\gamma ,p)$$ at energy $$E_{\mathrm{\gamma max}} = 35$$–95 MeV

Timchenko,

Deiev,

Olejnik

et al. 2023

Eur. Phys. J. A

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The production of the $$^{180\textrm{m}}\textrm{Hf}$$ 180 m Hf nuclei in the photoproton reaction $${^{181}\textrm{Ta}}(\gamma ,p)$$ 181 Ta ( γ , p ) was studied at end-point bremsstrahlung energies $$E_{\mathrm{\gamma max}}=35$$ E γ max = 35 –95 MeV. The experiment was performed at the electron linear accelerator LUE-40 NSC KIPT with the use of the $$\gamma $$ γ activation and off-line $$\gamma $$ γ -ray spectroscopy. The experimental values of the bremsstrahlung flux-averaged cross-sections $$\langle {\sigma (E_{\mathrm{\gamma max}})}\rangle _{\textrm{m}}$$ ⟨ σ ( E γ max ) ⟩ m for the $${^{181}\textrm{Ta}}(\gamma ,p)^{180\textrm{m}}\textrm{Hf}$$ 181 Ta ( γ , p ) 180 m Hf reaction were determined, and at $$E_{\mathrm{\gamma max}} > 55$$ E γ max > 55 MeV obtained for the first time. The measured values, as well as the literature data, significantly (by more that an order of magnitude) exceed the theoretical flux-averaged cross-sections $$\langle {\sigma (E_{\mathrm{\gamma max}})}\rangle _{\textrm{th}}$$ ⟨ σ ( E γ max ) ⟩ th . The $$\langle {\sigma (E_{\mathrm{\gamma max}})}\rangle _{\textrm{th}}$$ ⟨ σ ( E γ max ) ⟩ th values were calculated using the cross-section $$\sigma (E)$$ σ ( E ) computed with the TALYS1.95 code for six different level density models. A comparative analysis of the calculated total cross-sections from the TALYS computation for the reactions $${^{181}\textrm{Ta}}(\gamma ,p)^{180}\textrm{Hf}$$ 181 Ta ( γ , p ) 180 Hf and $${^{181}\textrm{Ta}}(\gamma ,n)^{180}\textrm{Ta}$$ 181 Ta ( γ , n ) 180 Ta was performed. It was shown that the photoproton $$(\gamma ,p)$$ ( γ , p ) to photoneutron $$(\gamma ,n)$$ ( γ , n ) strength ratio is consistent with the estimates based on the isospin selection rules and the value from the $$(e,e'p)$$ ( e , e ′ p ) experiment.

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CROSS-SECTIONS OF PHOTONUCLEAR REACTIONS ON natМо TARGETS AT END-POINT BREMSSTRAHLUNG ENERGY UP TO Еγmax = 100 МeV

Cited by 7 publications

References 10 publications

PHOTONUCLEAR REACTIONS CROSS-SECTIONS AT ENERGIES UP TO 100 MeV FOR DIFFERENT EXPERIMENTAL SETUPS

PHOTONUCLEAR REACTIONS CROSS-SECTIONS AT ENERGIES UP TO 100 MeV FOR DIFFERENT EXPERIMENTAL SETUPS

Photoproduction of the 55−57Co nuclei on natNi at the bremsstrahlung end-point ene

Production of $${^{180\textrm{m}}}$$Hf in photoproton reaction $${^{181}}$$Ta$$(\gamma ,p)$$ at energy $$E_{\mathrm{\gamma max}} = 35$$–95 MeV

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