ASMA Ghezal

User profile picture

ASMA Ghezal

غزال اسماء

asma.ghezal@univ-msila.dz

0782364563

  • Departement of Physics
  • Faculty of Sciences
  • Grade PHd
Send Mail

About Me

Domain

Sciences de la Matière

Filiere

Physique

Location

Msila, Msila

Msila, ALGERIA

Code RFIDE

  • 1994-11-19 00:00:00

  • ASMA Ghezal birthday

  • 2026-01-03
  • 2026-01-03

    Semi-Empirical Formulae for Triton Emission at 14-15 MeV Neutrons

    This work focuses to develop semi-empirical formulae for calculating (n, t) nuclear reaction induced by fast neutron at energy of 14-15 MeV. The emission of triton is a weak nuclear reaction, it is presented by an excitation function of micro barns, and we use pre-compound mechanism based on exciton model to describe it. Three fitting parameters at the formulae are proposed where the even-odd contribution is taken into consideration, 31 nuclei are investigated with mass number A 17 ≤ A ≤ 238. Compared to previous studies, low values of χ2 and Σ are obtained, achieving 0.91 and 16.53 respectively, for even A nuclei, 1.57 and 10.98 respectively, for odd A nuclei. These formulae reproach more calculated cross sections from experiment data and predict the unmeasured ones. This work improves that, in addition to the equilibrium model, the pre-equilibrium model is useful in weak nuclear reaction description. Keywords Semi-empirical systematic · (n, t) function excitation · Pre-equilibrium model · Exciton model

    Citation

    Asma Ghezal , , (2026-01-03), Semi-Empirical Formulae for Triton Emission at 14-15 MeV Neutrons, Journal of Fusion Energy, Vol:45, Issue:2026, pages:6, Springer

    See publication
  • 2025-06-25
  • 2025-06-25

    Improved semi-empirical formula for (n, 3He) reaction cross section at 14.6 MeV

    A new semi-empirical formula has been developed to calculate the (n, 3 He) reaction cross-section at a neutron energy of 14.6 MeV, with the aim of improving prediction accuracy by incorporating the Q-value and asymmetry parameters. The formula is based on the exciton model, which describes the pre-equilibrium reaction mechanism. Experimental data from the literature were used to validate the formula and optimize its free parameters. The results show that the proposed formula provides a better fit to experimental data compared to previous models, especially at incident energies above 15 MeV. The model has also been extended to cover a wider energy range and validated using additional experimental data.

    Citation

    Asma Ghezal , ,(2025-06-25), Improved semi-empirical formula for (n, 3He) reaction cross section at 14.6 MeV,NSP2025,Turqui

    See publication
  • 2025-06-25
  • 2025-06-25

    Novel systematic for (n,d) reaction cross section at 14‐15 MeV

    Only few (n,d) measured cross section exists with heigh uncertainties for 20 elements 7 ≤ A ≤ 96. The difficulty of measure in nuclear reactor (short lifetime of target nuclei or their very low abundance) is the reason of this poor data. Therefore, the systematic (n,d) reaction cross section at 14–15 MeV neutron energy is used to reproduce measured data and predict unmeasured one. A new semi empirical formula for (n, d) nuclear reaction is proposed to calculate function excitation at 14‐15 MeV, with three adjustable parameters this systematic proofs the contribution of pre‐equilibrium deuterium particle emission. To check the formula’s quality we compare obtained cross section with measured one. The formula obtained has a good fitting with lower values of Σ and χ2

    Citation

    Asma Ghezal , Samra Nehaoua , ,(2025-06-25), Novel systematic for (n,d) reaction cross section at 14‐15 MeV,17th International Conference on Nuclear Structure Properties (NSP2025),,Turkey

    See publication
  • 2025-06-25
  • 2025-06-25

    Improved semi-empirical formula for (n, 3 He) reaction cross section at 14.6 MeV

    A new semi-empirical formula has been developed to calculate the (n, 3 He) reaction cross-section at a neutron energy of 14.6 MeV, with the aim of improving prediction accuracy by incorporating the Q-value and asymmetry parameters. The formula is based on the exciton model, which describes the pre-equilibrium reaction mechanism. Experimental data from the literature were used to validate the formula and optimize its free parameters. The results show that the proposed formula provides a better fit to experimental data compared to previous models, especially at incident energies above 15 MeV. The model has also been extended to cover a wider energy range and validated using additional experimental data. Keywords — (n,t) function excitaion;; fusion reaction; 3

    Citation

    Samra Nehaoua , Asma Ghezal , Nouri BENAIDJA , ,(2025-06-25), Improved semi-empirical formula for (n, 3 He) reaction cross section at 14.6 MeV,17th International Conference on Nuclear Structure Properties (NSP2025),,Turkey

    See publication
  • 2025-04-13
  • 2025-04-13

    Novel semi empirical systematic for (n,t) cross section at 14,6 MeV

    Background/Purpose: A theoretical semi-empirical formula is derived for calculating the (n, t) nuclear cross-section at 14.6 MeV neutron energy. This study aims to improve the prediction accuracy of cross-sections by incorporating Q-value dependence and asymmetry parameters, building on the pre-compound mechanism with the exciton model. Materials & Methods: The proposed formula is derived using theoretical models that describe the pre-compound reaction mechanism. The Q dependence and asymmetry parameters were key inputs in refining the formula. Experimental data from the literature were utilized to validate and optimize the free parameters of the formula [1-3]. Results: The suggested formula provides a better fit to experimental data compared to previously established models. It accurately predicts the excitation function for energies greater than 15 MeV, showing consistency with observed trends and improving upon the limitations of earlier approaches. Conclusion: The new formula enhances the accuracy of (n, t) reaction cross-section predictions at 14.6 MeV, offering a reliable tool for theoretical and applied nuclear physics. Future work will focus on extending the model to a broader energy range and validating it with additional experimental datasets. References: [1]. Qaim S. M., “Nuclear cross sections for (n, t) and related reactions.” Nuclear Physics A. 1984;438:384. [2]. Nehaoua S., “Semi-empirical systematic of (n, 3He) reaction cross section at 14.6 MeV.” Nuclear Instruments and Methods in Physics Research Section B. 2020;484:71–74. [3]. Belgaid M., Segueni T., Kadem F., Asghar M. "Semi-empirical systematic of (n,t) reaction cross section for 14.5 MeV neutrons." Nuclear Instruments and Methods in Physics Research Section B, 2003;201:545. Keywords: (n,t) cross section; tritium emission; semi-empirical systematic.

    Citation

    Asma Ghezal , ,(2025-04-13), Novel semi empirical systematic for (n,t) cross section at 14,6 MeV,4th International Conference on Radiation And Applications ICRAA'4,ALGIERS, ALGERIA

    See publication
  • 2025-04-13
  • 2025-04-13

    Novel semi empirical systematic for (n,t) cross section at 14,6 MeV

    The new formula enhances the accuracy of (n, t) reaction cross-section predictions at 14.6 MeV, offering a reliable tool for theoretical and applied nuclear physics. Future work will focus on extending the model to a broader energy range and validating it with additional experimental datasets.

    Citation

    Samra Nehaoua , Asma Ghezal , Nouri BENAIDJA , ,(2025-04-13), Novel semi empirical systematic for (n,t) cross section at 14,6 MeV,4th International Conference on Radiations And Applications ICRAA4,Algeria

    See publication
  • 2025-04-13
  • 2025-04-13

    Semi empirical formula for (n,d) reaction cross section at 14-15 MeV

    Background/Purpose: A semi empirical formula for (n,d) nuclear reaction cross section is proposed. The systematic was derived using analytical expressions for the calculation of the deuterium emission spectrum in (n,d) nuclear reactions. The pre-equilibrium exciton model and the evaporation model are used to describe the deuterium emission. The experimental data are used to adjust free parameters in systematic formula at 14-15 MeV. The systematics gives closer results to experimental data compared with formulas earlier studies. Materials & Methods: The pre-equilibrium exciton model and the evaporation model are used to describe the deuterium emission; previous studies have ignored pre equilibrium mechanism. Results: The proposed semi empirical systematic describe better (n,d) function excitation and gives least values of statistical parameters which proof the quality of our formula. [1,2]. Conclusion: The systematics gives closer results to experimental data compared with formulas earlier studies. The proposed semi empirical systematic describe better (n,d) function excitation and gives least values of statistical parameters which proof the quality of our formula.

    Citation

    Samra Nehaoua , Asma Ghezal , Nouri BENAIDJA , ,(2025-04-13), Semi empirical formula for (n,d) reaction cross section at 14-15 MeV,4th International Conference on Radiations And Applications ICRAA4,Algeria

    See publication
  • 2025-04-13
  • 2025-04-13

    thermophysical properties of heliumand argon gaz

    Background/Purpose: A theoretical semi-empirical formula is derived for calculating the (n, t) nuclear cross-section at 14.6 MeV neutron energy. This study aims to improve the prediction accuracy of cross-sections by incorporating Q-value dependence and asymmetry parameters, building on the pre-compound mechanism with the exciton model. Materials & Methods: The proposed formula is derived using theoretical models that describe the pre-compound reaction mechanism. The Q dependence and asymmetry parameters were key inputs in refining the formula. Experimental data from the literature were utilized to validate and optimize the free parameters of the formula [1-3]. Results: The suggested formula provides a better fit to experimental data compared to previously established models. It accurately predicts the excitation function for energies greater than 15 MeV, showing consistency with observed trends and improving upon the limitations of earlier approaches. Conclusion: The new formula enhances the accuracy of (n, t) reaction cross-section predictions at 14.6 MeV, offering a reliable tool for theoretical and applied nuclear physics. Future work will focus on extending the model to a broader energy range and validating it with additional experimental datasets.

    Citation

    Samra Nehaoua , Asma Ghezal , ,(2025-04-13), thermophysical properties of heliumand argon gaz,4th International Conference on Radiations And Applications ICRAA4,Algeria

    See publication
  • 2025-02-17
  • 2025-02-17

    Analyse systématique des sections efficaces de la réaction (n,3He) à 14-15 MeV.

    Une nouvelle formule semi-empirique pour le calcul de la section efficace de la réaction (n, He-3) à une énergie de neutrons de 14,6 MeV est proposée. Elle est basée sur le modèle d'exciton sous forme fermée et le modèle de coalescence. La nouvelle formule, avec trois paramètres, offre un meilleur ajustement aux données que les formules comparables précédentes.

    Citation

    Asma Ghezal , Samra Nehaoua , Fouzia Bouchelaghem , ,(2025-02-17), Analyse systématique des sections efficaces de la réaction (n,3He) à 14-15 MeV.,2nd National seminar of Physics, Chemistry and their Applications NSPCA'25,University Mohamed El Bachir El Ibrahimi of Bordj Bou Arreridj - Algeria

    See publication
  • 2024-12-16
  • 2024-12-16

    New Semi-Empirical Formula for (n, t) Reaction Cross Sections

    A semi-empirical formula is proposed to calculate excitation function for the (n, t) nuclear reaction at 14.6 MeV. This semi-empirical systematic contains free parameters fixed by experimental data, we use pre-equilibrium exciton model to describe tritium emission in nuclear reactions induced with rapid neutrons. To verify the quality of the proposed formula, we compare the obtained crosssection with measured ones. We found that calculated (n, t) excitation function is close to theexperimental data and the proposed systematic better describes tritium emission for even-even nuclei target.

    Citation

    Asma Ghezal , ,(2024-12-16), New Semi-Empirical Formula for (n, t) Reaction Cross Sections,icrampcs24,Constantine,Algérie

    See publication
  • 2024-11-23
  • 2024-11-23

    NEW SEMI EMPIRICAL SYSTEMATIC OF (N, T) REACTION CROSS SECTION

    A semi-empirical formula is proposed to calculate excitation function for the (n, t) nuclear reaction at 14.6 MeV. This semi-empirical systematic contains free parameters fixed by experimental data, we use pre-equilibrium exciton model to describe tritium emission in nuclear reactions induced with rapid neutrons. To verify the quality of the proposed formula, we compare the obtained cross-section with measured ones. We found that calculated (n, t) excitation function is close to the experimental data and the proposed systematic better describes tritium emission for even-even nuclei target.

    Citation

    Asma Ghezal , Samra Nehaoua , ,(2024-11-23), NEW SEMI EMPIRICAL SYSTEMATIC OF (N, T) REACTION CROSS SECTION,NUPPAC'24,Egypt

    See publication
  • 2024-11-06
  • 2024-11-06

    Application of Artificial Intelligence in Physics

    /

    Citation

    Asma Ghezal , ,(2024-11-06), Application of Artificial Intelligence in Physics,Application of Artificial Intelligence in Physics,University of Medea

    See publication
  • 2024-09-24
  • 2024-09-24

    THEORICAL FORMULAE OF (n, 3 He) REACTION FUNCTION EXCITATION AT 14?6 MeV

    A new three parameters formula for (n, 3 He) nuclear reaction is proposed to calculate function excitation at 14.6 MeV, this semi-empirical systematic reduces parameters taken in previous proposed formulae which increase the contribution of pre-equilibrium 3 He particle emission. We use exciton model in closed form and coalescence model to describe the pre-equilibrium 3 He particle emission in reaction induced by neutron. To check the formula’s quality we compare obtained cross section with measured ones. The formula obtained in this work has a good fitting with lower values of statistical parameters.

    Citation

    Samra Nehaoua , Asma Ghezal , Fouzia Bouchelaghem , ,(2024-09-24), THEORICAL FORMULAE OF (n, 3 He) REACTION FUNCTION EXCITATION AT 14?6 MeV,NUPPAC'24,Egypt

    See publication
  • 2024-09-24
  • 2024-09-24

    Isotopic effects in the He+ - He collision at lower energies

    This work is devoted to calculating the potential-energy curves of helium ions in their gases such as He+(2s)− He(1s), when both species are in their ground states, are either gerade (g) or ungerade (u), namely, 2Σ+ g or 2Σ+ u in the field of energy 10−12 ≤ E ≤ 10−2 ( a.u.), using new and modern data. Elastic cross-sections have also been calculated and the isotope effect of the presence of 4He and 3He atoms has been addressed, taking into account the nuclear spin and analog effect emanating from similar and non-distinction between colliding atoms.

    Citation

    Samra Nehaoua , Asma Ghezal , fouzia bouchelaghem <fouzia.bouchelaghem@univ-msila.dz>, S. Lias/University of Science and Technology Houari Boumediene BP 32 Bab Ezzouar, 16111. Algeria, ,(2024-09-24), Isotopic effects in the He+ - He collision at lower energies,NUPPAC'24,Egypt

    See publication
  • 2024-07-14
  • 2024-07-14

    Université d’été sur Linux et les Logiciels Libres

    /

    Citation

    Asma Ghezal , ,(2024-07-14), Université d’été sur Linux et les Logiciels Libres,Université d’été sur Linux et les Logiciels Libres,Sétif

    See publication
  • 2024-06-26
  • 2024-06-26

    The second virial coefficient of Ar2

    One of the physical means available to verify the quality and accuracy of the potential of inter-action is the evaluation of the second coefficients of viriel B2 (𝑇) and the analysis of their behaviour with temperature 𝑇. These coefficients depend, as will be seen below, directly from the interaction potential V(𝑅).

    Citation

    Fouzia Bouchelaghem , Samra Nehaoua , Asma Ghezal , ,(2024-06-26), The second virial coefficient of Ar2,CAPS-2024,Khemis-Miliana, Algeria

    See publication