Magnetic System for Cleaning the Gamma Beam at the Lue-40 Electron Linac Output

Mytrochenko, V.V.; Perezhogin, S.O.; Selivanov, L.I.; Zhyglo, V.Ph.; Vodin, A. N.; Deiev, O.S.; Olejnik, S.M.; Timchenko, I. S.; Kushnir, V.A.

doi:10.46813/2022-139-062

Cited by 6 publications

(3 citation statements)

References 21 publications

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“…The range of initial energies of electrons is = 30-100 MeV. A detailed description and parameters of the LUE-40 linac are given in literature [28][29][30][31].…”

Section: Experimental Setup and Proceduresmentioning

confidence: 99%

Isomeric pair ⁹⁵ ^m,g Nb in the photonuclear reactions on ^natMo at the bremsstrahlung end-point energy of 38–93 MeV

Timchenko,

Deiev,

Olejnik

et al. 2023

Chinese Phys. C

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The natMo(γ,xnp)95m,gNb photonuclear reaction was studied using the electron beam from the NSC KIPT linear accelerator LUE-40. The experiment was performed using the activation and off-line γ-ray spectrometric technique. The experimental isomeric yield ratio IR was determined for the reaction products 95m,gNb at the bremsstrahlung end-point energy E γmax range of 38–93 MeV. The obtained values of IR are in satisfactory agreement with the results of other authors and extend the range of previously known data. The theoretical values of the yields Y m,g(E γmax) and the isomeric yield ratio IR for the isomeric pair 95m,gNb from the natMo(γ,xnp) reaction were calculated using the partial cross-sections σ(E) from the TALYS1.95 code for six different level density models LD. At the investigated range of E γmax the theoretical dependence of IR on energy wasconfirmed — the isomeric ratio smoothly increases with increasing energy. The comparison showed a noticeable difference (more than 3.85 times) of the experimental isomeric yield ratio relative to all theoretical estimates.

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“…The range of initial energies of electrons is = 30-100 MeV. A detailed description and parameters of the LUE-40 linac are given in literature [28][29][30][31].…”

Section: Experimental Setup and Proceduresmentioning

confidence: 99%

Isomeric pair ⁹⁵ ^m,g Nb in the photonuclear reactions on ^natMo at the bremsstrahlung end-point energy of 38–93 MeV

Timchenko,

Deiev,

Olejnik

et al. 2023

Chinese Phys. C

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“…The second scheme of the experiment implements a deflecting magnet to divert the electrons that have passed through the converter [36] that allowing obtaining a "pure" beam of bremsstrahlung γ-quanta at the target [37]. This assumes the use of a thin Ta-converter to minimize the spread of the electron beam.…”

Section: Methodsmentioning

confidence: 99%

Study the Isomeric Ratios in Photonuclear Experiments on the Lue-40 Linac RDC “Accelerator” NSC Kipt

Timchenko,

Deiev,

Olejnik

et al. 2023

Problems of Atomic Science and Technology

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The results of photoproduction of isomeric pairs from the (γ,xn) and (γ,pxn) reactions on nuclei from Zr up to Ta at the bremsstrahlung end-point energy range 30…100 MeV are systematized. Measurements were performed at the electron beam of the LUE-40 linac RDC “Accelerator” NSC KIPT using the activation method and off-line γ-ray spectrometric technique. The theoretical isomeric ratios IR for the nuclei-products of studied reactions were calculated using the cross-sections σ(E) from the TALYS1.95 code for six different level density models. The data from the international databases were additionally used to compare experimental results and theoretical predictions. The obtained results let us make conclusions about trends of values and energy dependence of IR in studied photonuclear reactions. Further directions of experimental research in the RDC “Accelerator” NSC KIPT are discussed.

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“…The second scheme of the experiment implements a deflecting magnet to divert the electrons that have passed through the converter [31] that allowing obtaining a "pure" beam of bremsstrahlung γ-quanta at the target [32]. This assumes the use of a thin Ta-converter to minimize the spread of the electron beam.…”

Section: B Experimental Setupmentioning

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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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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Magnetic System for Cleaning the Gamma Beam at the Lue-40 Electron Linac Output

Cited by 6 publications

References 21 publications

Isomeric pair ⁹⁵ ^m,g Nb in the photonuclear reactions on ^natMo at the bremsstrahlung end-point energy of 38–93 MeV

Isomeric pair ⁹⁵ ^m,g Nb in the photonuclear reactions on ^natMo at the bremsstrahlung end-point energy of 38–93 MeV

Study the Isomeric Ratios in Photonuclear Experiments on the Lue-40 Linac RDC “Accelerator” NSC Kipt

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

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Magnetic System for Cleaning the Gamma Beam at the Lue-40 Electron Linac Output

Cited by 6 publications

References 21 publications

Isomeric pair 95 m,g Nb in the photonuclear reactions on natMo at the bremsstrahlung end-point energy of 38–93 MeV

Isomeric pair 95 m,g Nb in the photonuclear reactions on natMo at the bremsstrahlung end-point energy of 38–93 MeV

Study the Isomeric Ratios in Photonuclear Experiments on the Lue-40 Linac RDC “Accelerator” NSC Kipt

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

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Isomeric pair ⁹⁵ ^m,g Nb in the photonuclear reactions on ^natMo at the bremsstrahlung end-point energy of 38–93 MeV

Isomeric pair ⁹⁵ ^m,g Nb in the photonuclear reactions on ^natMo at the bremsstrahlung end-point energy of 38–93 MeV