Experimental yield and evaluation of proton induced reactions for neutron production and synthesis of beryllium-7 using lithium compounds as target material

Al-Abyad, M.; Aal, S.A. Abd El; Hassanin, Walaa; Elmaghraby, Elsayed K.

doi:10.1016/j.apradiso.2019.108947

Cited by 4 publications

(3 citation statements)

References 92 publications

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“…Using the Monte Carlo N-Particle Transport Code (MCNP), we were able to create a simplified Monte Carlo simulation specifically for a spherical symmetry wrapped by an external neutron source that encloses a moderating volume made of liquid water with a density of 1 g/cm 3 . Making the source with an 241 AmBe was essential to prove the concept that even when the physics of neutron production is independent of the history of the neutron, there is also a perturbation in the field if an absorber exists.…”

Section: Discussionmentioning

confidence: 99%

“…Also, in the geometry of work done by Elmaghraby et al [2], the cooling water of the target moderates the neutrons and reflects them back to the accelerator target. Finally, the geometry of the experiment carried out by Alabyad et al [3] where the physics of neutron production itself is influenced due to the existence of feedback through 7 Li(p, n) 7 Be which can absorb a thermal neutron and form 8 Be which decays to two helium atoms. All these remarks, which caused difficulties and interferences in the addresses measurements, can be explained as a stimulated perturbation of the neutron flux distribution in the mutually-dependent source-toabsorber pile.…”

Section: Introductionmentioning

confidence: 99%

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Stimulated perturbation on the neutron flux distribution in the mutually-dependent source-to-absorber geometry

W.¹,

Elmaghraby²,

Solieman³

et al. 2022

Phys. Scr.

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The complexity of the neutron transport phenomenon throws its shadows on every physical system wherever neutron is produced or absorbed. The Monte Carlo N-Particle Transport Code (MCNP) was used to investigate the flux perturbations in the neutron field caused by an absorber. The geometry of the present experiment was designed to reach a simulation of an isotopic neutron field. The neutron source was a 241AmBe with the production physics of neutrons is dependent only on alpha- beryllium interaction and is independent of what happened to the neutron after it was generated. The geometries have been designed to get a volume of uniform neutron densities within a spherical volume of radius 15 cm in every neutron energy group up to 10 MeV. Absorbers of different dimensions were placed within the volume to investigate the field perturbation. Different neutron absorbers were used to correlate the phenomenon to the integral cross section of the absorber. Flux density inside and outside the absorber samples was determined, while the spatial neutron flux distribution produced by the AmBe source without absorber was taken as a reference. This study displayed that absorbers of various dimensions perturb the neutron field in a way that is dependent on the absorption and scattering cross-sections, particularly in the neutron resonance region. Unlike the simple picture of reducing the number density of neutrons, the perturbation was found to influence the moderation of neutrons in the medium, significantly above 1 MeV.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Stimulated perturbation on the neutron flux distribution in the mutually-dependent source-to-absorber geometry

W.¹,

Elmaghraby²,

Solieman³

et al. 2022

Phys. Scr.

View full text Add to dashboard Cite

show abstract

“…Also, in the geometry of work done by Elmaghraby et al [2], the cooling water of the target moderates the neutrons and reflects them back to the accelerator target. Finally, the geometry of the experiment carried out by Al-Abyad et al [3] where the physics of neutron production itself is influenced due to the existence of feedback through 7 Li(p,n) 7 Be which can absorb a thermal neutron and form 8 Be which decays to two helium atoms. All these remarks, which caused difficulties and interferences in the addresses measurements, can be explained as a stimulated perturbation on the neutron flux distribution in the mutually-dependent source-to-absorber pile.…”

Section: Introductionmentioning

confidence: 99%

Stimulated perturbation on the neutron flux distribution in the mutually-dependent source-to-absorber geometry

W.¹,

Elmaghraby²,

Solieman³

et al. 2022

Preprint

Self Cite

View full text Add to dashboard Cite

The complexity of the neutron transport phenomenon throws its shadows on every physical system wherever neutron is produced or absorbed. The Monte Carlo N-Particle Transport Code (MCNP) was used to investigate the flux perturbations in the neutron field caused by an absorber. The geometry of the present experiment was designed to reach a simulation of an isotopic neutron field. The neutron source was a 241 AmBe with the production physics of neutrons is dependent only on alpha-beryllium interaction and is independent of what happened to the neutron after it was generated. The geometries have been designed to get a volume of uniform neutron densities within a spherical volume of radius 15 cm in every neutron energy group up to 10 MeV. Absorbers of different dimensions were placed within the volume to investigate the field perturbation. Different neutron absorbers were used to correlate the phenomenon to the integral cross section of the absorber. Flux density inside and outside the absorber samples was determined, while the spatial neutron flux distribution produced by the AmBe source without absorber was taken as a reference. This study displayed that absorbers of various dimensions perturb the neutron field in a way that is dependent on the absorption and scattering cross-sections, particularly in the neutron resonance region. Unlike the simple picture of reducing the number density of neutrons, the perturbation was found to influence the moderation of neutrons in the medium, significantly above 1 MeV.

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Neutron-induced mass shift of tin isotopes recognized using inductively coupled plasma mass spectrometry as an isotopic fingerprint on neutron reactions

Rashad

El-Said

Elmaghraby

2021

Applied Radiation and Isotopes

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Experimental yield and evaluation of proton induced reactions for neutron production and synthesis of beryllium-7 using lithium compounds as target material

Cited by 4 publications

References 92 publications

Stimulated perturbation on the neutron flux distribution in the mutually-dependent source-to-absorber geometry

Stimulated perturbation on the neutron flux distribution in the mutually-dependent source-to-absorber geometry

Stimulated perturbation on the neutron flux distribution in the mutually-dependent source-to-absorber geometry

Neutron-induced mass shift of tin isotopes recognized using inductively coupled plasma mass spectrometry as an isotopic fingerprint on neutron reactions

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