Systematical analysis of (n, α) reaction cross sections for 6–20 MeV neutrons

Khuukhenkhuu, G.; Gledenov, Yu. M.; Sedysheva, M. V.; Odsuren, M.; Munkhsaikhan, J.; Delgersaikhan, T.

doi:10.1134/s1547477114060053

Cited by 5 publications

(3 citation statements)

References 14 publications

(10 reference statements)

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“…Nuclear reactions caused by fast neutrons that are followed by the emission of charged particles (protons and alphas) are traditionally studied. [1][2][3][4][5]. Fast neutrons processes are of interest for basic and applied researches.…”

Section: Introductionmentioning

confidence: 99%

Alpha emission from fast neutron interactions with ⁶⁴Zn nuclei

Oprea,

Mihul,

Oprea

et al. 2023

EPJ Web of Conf.

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In this study, the nuclear process 64Zn(n, α)61Ni induced by fast neutrons in the 64Zn nucleus was investigated. With the authors' computer programs and Talys codes, cross-sections, angular correlations, and forward-backward asymmetry effects were investigated for incident neutrons with energies ranging from 0.5 MeV to 25 MeV. 61Ni cross-sections were determined through an investigation of nuclear reaction mechanisms (direct, compound, pre-equilibrium) and discrete and continuum states within the 61Ni residual nucleus. Our analysis of the neutron incident and alpha emergent channels included the extraction of optical potential parameters (with real and imaginary parts) with volume, surface, and spin-orbit components. The cross-sections calculated theoretically and found in our experiments confirm earlier published data. For neutrons with energies of a few MeV, the 64Zn(n, α)61Ni reaction produced by fast neutrons exhibits an unusual forward-backward asymmetry. At this energy, the observed effect cannot be explained by direct mechanisms with orders of magnitude lower; compound processes that predominate must be used. To understand the observed forward-backward asymmetry effect, the spectra of emitted alpha particles were modelled by the direct Monte Carlo method while taking into consideration the energy loss of alpha particles on Zn targets with finite dimensions.

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Section: Introductionmentioning

confidence: 99%

Alpha emission from fast neutron interactions with ⁶⁴Zn nuclei

Oprea,

Mihul,

Oprea

et al. 2023

EPJ Web of Conf.

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“…In addition, a systematical analysis of known fast neutron induced (n, α) reaction cross sections was carried out [5]. A certain regularity of the (n, α) cross sections on the relative neutron excess parameter (N − Z + 0.5)/A of the target nuclei for neutron energy range of ∼2 MeV [6] and 6-20 MeV [5] was observed. Such a behaviour of the neutron cross sections is termed in literature as the isotopic effect [7].…”

Section: Introductionmentioning

confidence: 99%

“…Such a behaviour of the neutron cross sections is termed in literature as the isotopic effect [7]. The statistical model based on the Weisskopf and Ewing theory [8] and constant nuclear temperature approximation [9] was suggested [5] to explain the isotopic effect.…”

Section: Introductionmentioning

confidence: 99%

Statistical Model Analysis of (n, α) Cross Sections for 4.0-6.5 MeV Neutrons

Khuukhenkhuu

Odsuren

Gledenov

et al. 2016

EPJ Web of Conferences

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Abstract. The statistical model based on the Weisskopf-Ewing theory and constant nuclear temperature approximation is used for systematical analysis of the 4.0-6.5 MeV neutron induced (n, α) reaction cross sections. The α-clusterization effect was considered in the (n, α) cross sections. A certain dependence of the (n, α) cross sections on the relative neutron excess parameter of the target nuclei was observed. The systematic regularity of the (n, α) cross sections behaviour is useful to estimate the same reaction cross sections for unstable isotopes. The results of our analysis can be used for nuclear astrophysical calculations such as helium burning and possible branching in the s-process.

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Systematics and possible nonstatistical behaviour of (n,2n) cross sections

Khuukhenkhuu,

Saikhanbayar,

Odsuren

et al. 2024

Indian J Phys

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Systematical analysis of (n, α) reaction cross sections for 6–20 MeV neutrons

Cited by 5 publications

References 14 publications

Alpha emission from fast neutron interactions with ⁶⁴Zn nuclei

Alpha emission from fast neutron interactions with ⁶⁴Zn nuclei

Statistical Model Analysis of (n, α) Cross Sections for 4.0-6.5 MeV Neutrons

Systematics and possible nonstatistical behaviour of (n,2n) cross sections

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Systematical analysis of (n, α) reaction cross sections for 6–20 MeV neutrons

Cited by 5 publications

References 14 publications

Alpha emission from fast neutron interactions with 64Zn nuclei

Alpha emission from fast neutron interactions with 64Zn nuclei

Statistical Model Analysis of (n, α) Cross Sections for 4.0-6.5 MeV Neutrons

Systematics and possible nonstatistical behaviour of (n,2n) cross sections

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Product

Resources

About

Alpha emission from fast neutron interactions with ⁶⁴Zn nuclei

Alpha emission from fast neutron interactions with ⁶⁴Zn nuclei