-
Photoionization of Aluminum-Like P2+ and Magnesium-Like P3+ by the Screening Constant by Unit Nuclear Charge Method
Momar Talla Gning,
Jean Kouhissoré Badiane,
Abdourahmane Diallo,
Mamadou Diouldé Ba,
Ibrahima Sakho
Issue:
Volume 4, Issue 4, December 2019
Pages:
34-43
Received:
5 November 2019
Accepted:
25 November 2019
Published:
4 December 2019
Abstract: In the present work, accurate high lying single photoionization resonance energies for Aluminium-like P2+ and magnesium-like P3+ are reported. Calculations are performed in the framework of the Screening Constant by Unit Nuclear Charge (SCUNC) formalism. The resonance energies and quantum defects obtained compared very well with experimental data of Hernández et al., (2015) along with DARC, Dirac Atomic R-matrix Codes computations of Wang et al., (2016). Analysis of the present results is achieved in the framework of the standard quantum-defect theory and of the SCUNC-procedure based on the calculation of the effective charge. It is demonstrated that the SCUNC-method can be used to assist fruitfully experiments for identifying narrow resonance energies due to overlapping peaks. New precise data for Aluminium-like P2+ and magnesium-like P3+ ions are presented as useful guidelines for investigators focusing their challenge on the Photoionization of aluminum-like P2+ and magnesium-like P3+ heavy charged ions in connection with their application in laboratory, astrophysics, and plasma physics. In addition, our predicted data up to n = 30 may be of great importance for the atomic physics community in connection with the determination of accurate abundances for phosphorus in the solar photosphere, in solar twins, in the infrared spectrum of Messier 77 galaxy (NGC1068).
Abstract: In the present work, accurate high lying single photoionization resonance energies for Aluminium-like P2+ and magnesium-like P3+ are reported. Calculations are performed in the framework of the Screening Constant by Unit Nuclear Charge (SCUNC) formalism. The resonance energies and quantum defects obtained compared very well with experimental data o...
Show More
-
A Dispersive Optical Model Analysis of the Protons Scattering by Titanium Element Nucleus and Its Natural Isotopes
Haiddar Al-Mustafa,
Anees Belal
Issue:
Volume 4, Issue 4, December 2019
Pages:
44-51
Received:
10 November 2019
Accepted:
2 December 2019
Published:
10 December 2019
Abstract: A dispersive optical model analysis of the proton scattering by titanium element nucleus and its natural isotopes is applied to the construction of the complex single-particle mean field starting from Fermi energy value to the energy value 100MeV and for constant input values of the parameters of this mean field. This mean field is called (coulomb-nuclear) interference potential, that contains (spin-orbit) coulomb term. The results according to DOMACNIP program that has been designed for that purpose would contain: continuous energy variation of the depths of the real and imaginary parts of the mean field, which are connected by dispersion relations were compared with these resulting from global parameterization of the optical model potential. In addition to continuous energy variation of the real radius parameter of the Wood-Saxon approximation to the mean field potential with its Hatree-Fock approximation of the nonlocal potential. Consequently, our results for the continuous energy variations of the predicted total reaction cross section within the energy range (1-100) MeV, and with calculation step of the pervious range whose magnitude (1 MeV), differential cross sections, Ratio of the differential elastic scattering cross section to Rutherford cross section, polarization for selected energy showed the excellent agreement with available experimental data and with these resulted from global parameterization of the optical model potential.
Abstract: A dispersive optical model analysis of the proton scattering by titanium element nucleus and its natural isotopes is applied to the construction of the complex single-particle mean field starting from Fermi energy value to the energy value 100MeV and for constant input values of the parameters of this mean field. This mean field is called (coulomb-...
Show More
-
Review of Distribution of Natural Radiation in Some Parts of Nigeria
Olalekan Ifayefunmi,
Vyaceslav Kupriyanov,
Oleg Mirzeabasov,
Boris Synzynys
Issue:
Volume 4, Issue 4, December 2019
Pages:
52-59
Received:
21 November 2019
Accepted:
4 December 2019
Published:
10 December 2019
Abstract: Activity concentrations of natural radioactivity of 40K, 238U, 226Ra, and 232Th were reviewed in connection with rock, soil, sediments, and water in the Northern and Southern parts of Nigeria to estimate the radiation dose acquire by the population. The activity concentrations of the various radionuclides from rock samples collected from different locations were generally higher than those of other environmental matrices. Comparative distribution maps of 40K, 238U, and 232Th show the distribution of activity concentration in the Northern and Western part of Nigeria. The activity concentrations 40K, 238U, and 232Th in rock ranges from 40 Bq kg-1 to 1203 Bq kg-1, 34 Bq kg-1 to 7220 Bq kg-1, and 8 Bq kg-1 to 1680 Bq kg-1 respectively. In soil it ranges from 98.7 Bq kg-1 to 1023.3 Bq kg-1, 15.6 Bq kg-1 to 55.3 Bq kg-1, and 5.2 Bq kg-1 to 195.5 Bq kg-1 respectively. In sediment it ranges 97 Bq kg-1 to 1023 Bq kg-1, 12 Bq kg-1 to 47.9 Bq kg-1, and 11.7 Bq kg-1 to 55.3 Bq kg-1. The concentration of 40K and 238U in granite rocks are higher than the recommended permissible value. All the water samples were found to contain acceptable levels of radionuclides with mean activity values of 3.98±0.26, 11.00±2.58, and 17.73±5.04 Bql-1 for 40K, 232Th, and 238U, respectively showing that the mean activity of 238U for all the samples is the highest when compared with those of 40K and 232Th. The mean absorbed dose rate for all the area is 0.123mSvyr-1, which is very low when compared to the recommended limit of 1mSvyr-1 for water.
Abstract: Activity concentrations of natural radioactivity of 40K, 238U, 226Ra, and 232Th were reviewed in connection with rock, soil, sediments, and water in the Northern and Southern parts of Nigeria to estimate the radiation dose acquire by the population. The activity concentrations of the various radionuclides from rock samples collected from different ...
Show More
-
Current Trends of Artificial Intelligence in Nanosciences Application
Gizealew Alazie Dagnaw,
Gubala Getu Endeshaw
Issue:
Volume 4, Issue 4, December 2019
Pages:
60-65
Received:
6 November 2019
Accepted:
6 December 2019
Published:
11 December 2019
Abstract: Nanotechnologies are being spoken of as the driving force behind a new industrial revolution. Both private and public-sector spending are constantly increasing. In recent years the industries like Automobile, Medical, Space, Communication, Space and Military have realized tremendous benefits originating from discoveries made in the fields of Nanotechnology, Robotics and Artificial Intelligence (NRAI).During the last decade there has been increasing use of artificial intelligence tools in nanotechnology research. Artificial intelligence (AI) and nanotechnology are two fields that are instrumental in realizing the goal of precision medicine tailoring the best treatment for each cancer patient. Recent conversion between these two fields is enabling better patient data acquisition and improved design of nonmaterial’s for precision cancer medicine. Diagnostic nonmaterial’s are used to assemble a patient-specific disease profile, which is then leveraged, through a set of therapeutic nanotechnologies, to improve the treatment outcome. However, high intratumor and interpatient heterogeneities make the rational design of diagnostic and therapeutic platforms, and analysis of their output, extremely difficult. Integration of AI approaches can bridge this gap, using pattern analysis and classification algorithms for improved diagnostic and therapeutic accuracy. Nanomedicine design also benefits from the application of AI, by optimizing material properties according to predicted interactions with the target drug, biological fluids, immune system, vasculature, and cell membranes, all affecting therapeutic efficacy. Here, fundamental concepts in AI are described and the contributions and promise of nanotechnology coupled with AI to the future of precision cancer medicine are reviewed. Nanoscale applications working alone and in concert with AI will begin to move from the laboratories of the world into the theatres of war. Just as AI systems are now being wholly integrated into military decision making processes such as allowing satellites to deter attacks autonomously, in complimentary fashion, nanotechnology is providing the fabric for military space development.
Abstract: Nanotechnologies are being spoken of as the driving force behind a new industrial revolution. Both private and public-sector spending are constantly increasing. In recent years the industries like Automobile, Medical, Space, Communication, Space and Military have realized tremendous benefits originating from discoveries made in the fields of Nanote...
Show More
-
Investigation of Radionuclide Levels in Groundwater Around Transmission Company of Nigeria for Environmental Impact Assessment
Abiodun Odunlami Adegunwa,
Shola Hezekiah Awojide,
Odunayo Timothy Ore
Issue:
Volume 4, Issue 4, December 2019
Pages:
66-71
Received:
9 November 2019
Accepted:
2 December 2019
Published:
11 December 2019
Abstract: The activity concentrations of 40K, 238U and 232Th in groundwaters taken from areas surrounding Transmission Company of Nigeria, Osogbo, Nigeria were measured to highlight and ascertain possible radionuclide pollution. High-resolution gamma spectrometry (HPGe detector) was used to determine the activity concentration of these radionuclides and the results obtained were used to calculate human radiological risk by the inhabitants in the area. The activity concentrations of 40K in all the groundwater samples range from 53.48 ± 2.90 to 407.58 ± 20.94 Bq/L. The activity concentrations of 238U in the groundwaters range from BDL to 21.86 ± 3.05 Bq/L. The activity concentrations of the 232Th in the groundwaters range from 2.18 ± 0.14 to 11.76 ± 0.68 Bq/L. Of the three investigated radionuclides, 40K was observed to have the highest mean activity concentration. The radiological parameters indicated mean values of 15.25 nGy/hr as the absorbed dose rate, 0.13 mSv/yr as the annual effective dose, 0.10 Bq/kg as the internal hazard index, 0.08 Bq/L as the external hazard index, 110.02 µsvy-1 as the annual gonadal dose equivalent, 0.24 as the representative gamma index and 31.11 as the radium equivalent. These suggested that the groundwaters do not pose intrinsic radiological hazards as a result of their relatively lower values than the UNSCEAR permissible levels. As a result of this, the occurrence of any heath effect due to radiation is low. These measurements therefore represent baseline values of these radionuclides in the ground waters of the studying area and further monitoring of these groundwaters should be encouraged.
Abstract: The activity concentrations of 40K, 238U and 232Th in groundwaters taken from areas surrounding Transmission Company of Nigeria, Osogbo, Nigeria were measured to highlight and ascertain possible radionuclide pollution. High-resolution gamma spectrometry (HPGe detector) was used to determine the activity concentration of these radionuclides and the ...
Show More
