Dispersive Fraction in Volume and Surface Potential Absorption Integral to the Neutron-99Tc Reaction
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The fractions in dispersive of the volume and surface absorption potential integral to the total real volume potential integral, were evaluated numerically for neutron-nucleus interaction. The dispersive fraction values have been adopted in modifying the accuracy of the optical potential of the reaction, which in turn improved the calculated cross-section for neutron-nucleus interaction in accordance with published experimental measurements. The use of dispersive fraction to the potential integral was applied for the (n+99Tc) reaction and the calculated cross-sections were compared with published works in neutron energy 30MeV.
References
-
Dickhoff W, Charity R. Recent developments for the optical model of nuclei. Progress in Particle and Nuclear Physics, 2019;105:252–299. https://doi.org/10.1016/j.ppnp.2018.11.002.
Google Scholar
1
-
Jasim MH, Idress MT. Pre-equilibrium and Equilibrium energy emission spectrum of nucleons and light nuclei induced nuclear reactions on 63Cu nuclei. Iraqi Journal of Science, 2016; 57(2A): 910-917.
Google Scholar
2
-
Perey FG. Optical-Model Analysis of Proton Elastic Scattering in the Range of 9 to 22 MeV. Physical Review, 1963; 131(2).
Google Scholar
3
-
Avrigeanu V, Avrigeanu M, Mănăilescu C. Further explorations of theα-particle optical model potential at low energies for the mass rangeA≈45–209. Physical Review C, 2014; 90(4). https://doi.org/10.1103/physrevc.90.044612.
Google Scholar
4
-
Smith AB. The Neutron Spherical Optical Model Absorption. Annals of Nuclear Energy, 2008; 35(5): 890–903. https://doi.org/10.1016/j.anucene.2007.09.004.
Google Scholar
5
-
Lopez-Morana J, Vinas X. Nucleon-Nucleus optical potential computed with Gogny interaction. Journal of Physics G: Nuclear and Particle Physics, 2021; 48(3). https://doi.org/10.1088/1361-6471/abcdf8.
Google Scholar
6
-
Molina A, Capote R, Quesada JM, Lozano M. Dispersive spherical optical model of neutron scattering from27Alup to 250 MeV. Physical Review C, 2002; 65(3). https://doi.org/10.1103/physrevc.65.034616.
Google Scholar
7
-
Wakabayashi T, Takahashi M, Chiba S, Takaki N, Tachi Y. A fast reactor transmutation system for 6 LLFP nuclides. Nuclear Engineering and Design, 2020; 363: 110667. https://doi.org/10.1016/j.nucengdes.2020.110667.
Google Scholar
8
-
Macklin RL, Technetium-99 Neutron Capture Cross Section. Nuclear Science and Engineering, 1982;81:520-524. https://doi.org/10.13182/NSE82-A21441.
Google Scholar
9
-
Zerkin VV, Pritychenko B. Extended Computer database and WEB retrieval system, Nuclear Instruments and Methods in physics research section A: accelerators, spectrometers, detectors and associated equipment. The experimental nuclear reaction data (EXFOR), 2018; 888: 31-43.
Google Scholar
10
-
Abd Ali FF, Jasim MH. The Real and Imaginary Volume Integrals in Spherical-Statistical Optical Potential of Neutron Scattering from 56Fe nuclei. Iraqi Journal of Science, 2018; 59(4C): 221-2216. https://DOI:10.24996/ijs.2018.59.4C7.
Google Scholar
11
-
Watson BA, Singh PP, Segel RE. Optical Model Analysis of Neutron Scattering from 1P Shell Nuclei between 10 and 50 MeV. Phys. Rev., 1969; 182(4): 977-989.
Google Scholar
12
-
Pascolini A, Villi C. The nuclear Thomas-Fermi model and the optical potential for single-channel reactions. Il Nuovo Cimento A, 1985; 85(2): 89–174. https://doi.org/10.1007/bf02902407.
Google Scholar
13
-
Koning AJ, Delaroche JP. Local and global nucleon optical models from 1 keV to 200 MeV. Nuclear Physics A, 2003; 713: 231–310. https://doi.org/10.1016/S0375-9474(02)01321-0.
Google Scholar
14
-
Avrigeanu V, Hodgson PE, Avrigeanu M. Global optical potentials for emitted alpha particles. Physical Review C, 1994; 49(4): 2136–2141. https://doi.org/10.1103/physrevc.49.2136.
Google Scholar
15
-
Morillon B, Romain P. Dispersive and global spherical optical model with a local energy approximation for the scattering of neutrons by nuclei from 1keV to 200MeV. Physical Review C, 2004; 70(1). https://doi.org/10.1103/physrevc.70.014601.
Google Scholar
16
-
Mahaux C, Ngô H, Satchler G. 1986’ Causality and the Threshold Anomaly of the Nucleus-Nucleus Potential. Nuclear Physics A, 2004; 449(2): 354-394. https://doi.org/10.1016/0375-9474(86)90009-6.
Google Scholar
17
-
Hodgson PE. The Nucleon Optical Model. Publisher: World Scientific; 1994.
Google Scholar
18
-
Quesada JM, Capote R, Molina A, Lozano M. A Dispersion Relations in the Nuclear Optical Model. Computer Physics Communications, 2003; 153: 97-105.
Google Scholar
19
-
Lawson RD, Smith AB. Dispersion contribution to neutron reactions, Report ANL/NDM -152. Argonne National Laboratory, Argonne, Illinois, USA; 2001.
Google Scholar
20
-
Soukhovitskii ES, Capote R, Quesada JM, Chiba S. Dispersive coupled-channel analysis of nucleon scattering from Th232 up to 200 MeV. Physical Review C, 2005; 72(2). https://doi.org/10.1103/physrevc.72.024604.
Google Scholar
21
-
Capote R, Molina A, Quesada JM. A general numerical solution of dispersion relations for the nuclear optical model. Journal of Physics G: Nuclear and Particle Physics, 2001; 27(8): B15–B19. https://doi.org/10.1088/0954-3899/27/8/402.
Google Scholar
22
-
Lawson RD, Guenther PT, Smith AB. Energy dependence of the optical-model potential for fast-neutron scattering from bismuth. Physical Review C,1987; 36(4): 1298-1311.
Google Scholar
23
-
Jeukenne JP, Lejeune A, Mahaux C. Optical-model potential in finite nuclei from Reid’s hard core interaction, Phys. Rev. C, 1977; 17: 80.
Google Scholar
24
-
Feshbach H. The Optical Model and Its Justification. Annual Review of Nuclear Science, 1958; 8: 49-104. https://doi.org/10.1146/annurev.ns.08.120158.000405.
Google Scholar
25
-
Hodgson PE. Nuclear Reactions and Nuclear Structure. Clarendon Press, OXFORD, UK; 1971.
Google Scholar
26
-
Lawson RD, Smith AB. A neutron spherical Optical-Statistical Model Code: A user manual, ANL/NDM-145. Argonne National Laboratory, USA; 1999.
Google Scholar
27