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A review of physical principles and applications of acousto-optic deflectors on the basis paratellurite 基于准卫星的声光偏转器的物理原理及应用综述
Physics & Astronomy International Journal Pub Date : 2019-11-11 DOI: 10.15406/paij.2019.03.00189
Sergey N Antonov, V. Kotelnikov
{"title":"A review of physical principles and applications of acousto-optic deflectors on the basis paratellurite","authors":"Sergey N Antonov, V. Kotelnikov","doi":"10.15406/paij.2019.03.00189","DOIUrl":"https://doi.org/10.15406/paij.2019.03.00189","url":null,"abstract":"Deflectors based on Bragg non-axial anisotropic diffraction in a paratellurite crystal are considered. Practically significant relations connecting the main parameters are obtained, the factors limiting the diffraction efficiency and the angular scanning range are determined. The mode of multibeam acousto-optic diffraction as a method of creating a multichannel optical information output system is considered. A review of several new, practically implemented methods for increasing the main functional parameters of deflectors is presented. The possibility of using the diffraction mode in the second Bragg maximum in terms of sound amplitude to extend the scanning band is shown. The two-crystal scheme of the deflector, which can significantly improve the efficiency of diffraction, expand the scanning range and create a polarization-insensitive deflector, is considered. Acousto-optic switch of fiber-optic channels was developed. The possibility of using multibeam acousto-optic diffraction to improve the energy efficiency of laser radiation by modifying its profile is established","PeriodicalId":377724,"journal":{"name":"Physics & Astronomy International Journal","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131354019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Electron impact ionization of helium, neon and argon at intermediate energies 氦、氖和氩在中间能量下的电子冲击电离
Physics & Astronomy International Journal Pub Date : 2019-11-07 DOI: 10.15406/paij.2019.03.00188
RI Campeanu
{"title":"Electron impact ionization of helium, neon and argon at intermediate energies","authors":"RI Campeanu","doi":"10.15406/paij.2019.03.00188","DOIUrl":"https://doi.org/10.15406/paij.2019.03.00188","url":null,"abstract":"With a relatively simple distorted-wave model, in which the ejected and the scattered electrons see different residual systems depending on their energies, in this paper we show the calculation of the CPE cross sections for electron impact ionization of He, Ne and Ar. Combined with the ‘maximum interference’ exchange approximation, this model gives results which for Ne and Ar are in better agreement with the experiment than the other existing theoretical models.","PeriodicalId":377724,"journal":{"name":"Physics & Astronomy International Journal","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114924364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Unrestricted hartree-fock computational simulation in a protonated rhodochrosite crystal 质子化菱锰矿晶体中不受限制的hartree- fok计算模拟
Physics & Astronomy International Journal Pub Date : 2019-11-06 DOI: 10.15406/paij.2019.03.00187
R. Gobato, Marcia Regina Risso Gobato, A. Heidari, A. Mitra
{"title":"Unrestricted hartree-fock computational simulation in a protonated rhodochrosite crystal","authors":"R. Gobato, Marcia Regina Risso Gobato, A. Heidari, A. Mitra","doi":"10.15406/paij.2019.03.00187","DOIUrl":"https://doi.org/10.15406/paij.2019.03.00187","url":null,"abstract":"In this paper, compact effective potentials, charge distribution, Atomic Polar Tensor (APT) and Mulliken charges were studied using a unrestricted Hartree-Fock computational simulation in a protonated rhodochrosite crystal. The rhodochrosite crystal unit cell of structure CMn6O8, where the charge distribution by the molecule was verified in the UHF CEP-4G (Effective core potential (ECP) minimal basis), UHF CEP-31G (ECP split valance) and UHF CEP-121G (ECP triple-split basis). The largest load variation in the APT and Mulliken methods were obtained in the CEP-121G basis set, with δ=2.922 e δ=2.650 u.a., respectively, being δAPT> δMulliken. The maximum absorbance peaks in the CEP-4G, CEP-31G and CEP-121G basis set are present at the frequencies 2172.23 cm-1, with a normalized intensity of 0.65; 2231.4 cm-1 and 0.454; and 2177.24 cm-1 and 1.0, respectively. An in-depth study is necessary to verify the absorption by the tumoral and non-tumoral tissues of rhodochrosite, before and after irradiating of synchrotron radiation using Small–Angle X–Ray Scattering (SAXS), Ultra–Small Angle X–Ray Scattering (USAXS), Fluctuation X–Ray Scattering (FXS), Wide–Angle X–Ray Scattering (WAXS), Grazing–Incidence Small–Angle X–Ray Scattering (GISAXS), Grazing–Incidence Wide–Angle X–Ray Scattering (GIWAXS), Small–Angle Neutron Scattering (SANS), Grazing–Incidence Small–Angle Neutron Scattering (GISANS), X–Ray Diffraction (XRD), Powder X–Ray Diffraction (PXRD), Wide–Angle X–Ray Diffraction (WAXD), Grazing– Incidence X–Ray Diffraction (GIXD) and Energy–Dispersive X–Ray Diffraction (EDXRD). Later studies could check the advantages and disadvantages of rhodochrosite in the treatment of cancer through synchrotron radiation, such as one oscillator crystal.","PeriodicalId":377724,"journal":{"name":"Physics & Astronomy International Journal","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130476142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 45
Impact of covered conductors on Ghana’s distribution network 覆盖导体对加纳配电网的影响
Physics & Astronomy International Journal Pub Date : 2019-10-22 DOI: 10.15406/paij.2019.03.00185
J. Akoto
{"title":"Impact of covered conductors on Ghana’s distribution network","authors":"J. Akoto","doi":"10.15406/paij.2019.03.00185","DOIUrl":"https://doi.org/10.15406/paij.2019.03.00185","url":null,"abstract":"Electrical power outages experienced in the vegetation areas in Ghana are as a result of bare conductors coming in contact with grounded objects such as trees and tree branches. To curb this problem, the electricity company of Ghana has introduced into its overhead distribution networks the use of CC, covered conductors. These covered conductors unlike the traditional bare wire conductors are able to temporarily withstand phase-to-phase earth voltages. XLPE, Cross-Linked Polyethylene, HDPE, High Density Polyethylene covered conductors together with ABC, Aerial Bundled Conductors are considered. Limitations associated with these covered conductors, greatly relating to cost, reliability, supply quality and safety have been discussed in this paper.","PeriodicalId":377724,"journal":{"name":"Physics & Astronomy International Journal","volume":"104 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116520623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Revisiting the nature of dark sunspots: magneto-optical nature of darkness and heating of sunspots 重访暗黑子的性质:暗的磁光性质和太阳黑子的加热
Physics & Astronomy International Journal Pub Date : 2019-10-02 DOI: 10.15406/paij.2019.03.00184
Soika Alexander Kuzmich
{"title":"Revisiting the nature of dark sunspots: magneto-optical nature of darkness and heating of sunspots","authors":"Soika Alexander Kuzmich","doi":"10.15406/paij.2019.03.00184","DOIUrl":"https://doi.org/10.15406/paij.2019.03.00184","url":null,"abstract":"A critical analysis of the state of modern sunspot physics and the closely related physics of the sun as a whole is given. It is shown that the appearance and existence of dark and cold sunspots in the photosphere of the Sun is impossible, since this contradicts the second law of thermodynamics. The physical mechanism is described by which the magnetic field of a sunspot affects the processes of emission of light photons by the photospheric gas in the continuous spectrum of visible radiation, as a result of which it becomes dark and hot. Experimental evidence for the model of hot dark sunspots is presented. Estimates are given of the thermal power of sunspots as sources of solar wind energy and heating of the corona. A possible mechanism for the acceleration of solar wind particles in the solar atmosphere is proposed, which is based on the principle of the Laval nozzle.","PeriodicalId":377724,"journal":{"name":"Physics & Astronomy International Journal","volume":"189 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124194472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Stationary concentrated vortex with three velocity components above the water surface 水面上具有三个速度分量的静止集中涡
Physics & Astronomy International Journal Pub Date : 2019-09-20 DOI: 10.15406/paij.2019.03.00181
O. Sinkevich, G. Zinchenko
{"title":"Stationary concentrated vortex with three velocity components above the water surface","authors":"O. Sinkevich, G. Zinchenko","doi":"10.15406/paij.2019.03.00181","DOIUrl":"https://doi.org/10.15406/paij.2019.03.00181","url":null,"abstract":"The characteristics of stationary, concentrated vortices of a special type are studying. The new solution for the problem of a concentrated vortex with three components of the velocity vector was constructed using a cylindrical coordinate system. Vortices of this type can be initiated by intense evaporation of moisture in a limited area of the water surface.","PeriodicalId":377724,"journal":{"name":"Physics & Astronomy International Journal","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130620873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On the effects of different perturbations applied to the black hole-torus systems 不同摄动对黑洞环面系统的影响
Physics & Astronomy International Journal Pub Date : 2019-09-12 DOI: 10.15406/paij.2019.03.00180
O. Donmez
{"title":"On the effects of different perturbations applied to the black hole-torus systems","authors":"O. Donmez","doi":"10.15406/paij.2019.03.00180","DOIUrl":"https://doi.org/10.15406/paij.2019.03.00180","url":null,"abstract":"","PeriodicalId":377724,"journal":{"name":"Physics & Astronomy International Journal","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129349660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of equipment for assessing the influence of the sun and the moon on life on earth 研制用于评估太阳和月球对地球生命影响的设备
Physics & Astronomy International Journal Pub Date : 2019-09-11 DOI: 10.15406/paij.2019.03.00178
Berikashvili VSh
{"title":"Development of equipment for assessing the influence of the sun and the moon on life on earth","authors":"Berikashvili VSh","doi":"10.15406/paij.2019.03.00178","DOIUrl":"https://doi.org/10.15406/paij.2019.03.00178","url":null,"abstract":"","PeriodicalId":377724,"journal":{"name":"Physics & Astronomy International Journal","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124117722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An alternative classification of solar particle events that reach the earth ground level 到达地球地面的太阳粒子事件的另一种分类
Physics & Astronomy International Journal Pub Date : 2019-09-05 DOI: 10.15406/paij.2019.03.00177
J. P. Peraza, JC Márquez Adame
{"title":"An alternative classification of solar particle events that reach the earth ground level","authors":"J. P. Peraza, JC Márquez Adame","doi":"10.15406/paij.2019.03.00177","DOIUrl":"https://doi.org/10.15406/paij.2019.03.00177","url":null,"abstract":"There is currently a controversy in the literature about the denomination of Energetic Solar Protons, which are usually designated as Ground Level Enhancements (GLE), Sub-GLE or simply Solar Energetic Particles (SEP). Such classifications depend on the nature of a given event behavior. There is some criteria discrepancy among different authors that we have pointed out in the first part of this work. In order to unify criteria, here we carry out an analysis of several data bases and different catalogs of particle events. We observe that there is some discrepancy in the conceptualization of events in the specialized literature, and we hereby propose a reconceptualization in the sense that all GLE fulfill the criteria given in the literature to be considered as GLE, even those that have been classified recently as Sub-GLE/GLE for the particular case of the present cycle 24 To discern the kind of solar particle enhancements occurring during the present Solar Cycle, we base our work on different database of NM, data from the SOHO satellite catalogue and SEP catalogs. This leads us to recommend a reconceptualization of the kind of involved events. Our proposal is to name the event according to its date of occurrence, which leads us to avoid renumbering in case of detecting an intermediate event between two others already officially numbered, in the specific case of GLE. We propose, for instance, the following nomenclature: GLE dd/mm/yyyy. Another option is to consider all events that reach the terrestrial level simply as GLE with the first nomenclature just given above, which obviously includes GLE and Sub-GLE.","PeriodicalId":377724,"journal":{"name":"Physics & Astronomy International Journal","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114198726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Temperature effect on optical filter based on fiber-optic resonator using polarization and birefringence effects in the resonator loop 利用光纤谐振腔环路中的偏振和双折射效应研究温度对光纤谐振腔滤光片的影响
Physics & Astronomy International Journal Pub Date : 2019-08-30 DOI: 10.15406/paij.2019.03.00176
Faramarz E Seraji, Saeede Gasemzade
{"title":"Temperature effect on optical filter based on fiber-optic resonator using polarization and birefringence effects in the resonator loop","authors":"Faramarz E Seraji, Saeede Gasemzade","doi":"10.15406/paij.2019.03.00176","DOIUrl":"https://doi.org/10.15406/paij.2019.03.00176","url":null,"abstract":"In this paper an analysis of optical filter based on fiber-optic ring resonator using polarization and birefringence effects in the resonator loop is presented. The temperature variations, which affect the refractive index and radius of the ring, would cause a change in the filter response. The simulation results show that the resonant wavelengths would shift toward longer wavelengths and output intensity changes with increasing temperature. It is shown that for every 10 deg C change in temperature, would cause the resonance wavelength to increase by 0.1 .","PeriodicalId":377724,"journal":{"name":"Physics & Astronomy International Journal","volume":"141 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133642717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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