IOSR Journal of Applied Physics最新文献_第9页

Thermoelectric Power and Structure of Amorphous Ge100-Xsbx Alloys 非晶态Ge100-Xsbx合金的热电性能和结构

IOSR Journal of Applied Physics Pub Date : 2017-03-01 DOI: 10.9790/4861-0902015053

M. Ghazala

引用次数: 0

Nuclear Material Verification Based on MCNP and ISOCSTM Techniques for Safeguard Purposes 基于保障目的MCNP和isostm技术的核材料核查

IOSR Journal of Applied Physics Pub Date : 2017-03-01 DOI: 10.9790/4861-0901034550

M. Abdelati

{"title":"Nuclear Material Verification Based on MCNP and ISOCSTM Techniques for Safeguard Purposes","authors":"M. Abdelati","doi":"10.9790/4861-0901034550","DOIUrl":"https://doi.org/10.9790/4861-0901034550","url":null,"abstract":"Recently, Mathematical techniques such as Monte Carlo and ISOCS software are being increasingly employed in the absolute efficiency calibration of gamma ray detector. Monte Carlo simulations and Canberra ISOCS TM software bring the possibility to establish absolute efficiency curve for desired energy range based on numerical simulation, with use of known or guessed geometry and chemical composition, of measured item. Broad-energy germanium (BEGe) detector was employed to perform the NDA measurements to five standard reference nuclear material (NBS, SNM-969). MC calculations were performed to calculate some factors (attenuation, geometry and efficiency) which affect the uranium isotope mass estimation. 235 U and 238 U masses are calculated based on MCNPX modeling calibration and also upon spectra analysis using ISOCS TM Calibration Software. The obtained results from the two different efficiency calibration methods were compared with each other and with the declared value for each sample. The obtained results are in agreements with the declared values within the estimated relative accuracy (ranges between -2.81 to 1.83%). The obtained results indicate that the techniques could be applied for the purposes of NM verification and characterization where closely matching NM standards are not available.","PeriodicalId":14502,"journal":{"name":"IOSR Journal of Applied Physics","volume":"57 1","pages":"45-50"},"PeriodicalIF":0.0,"publicationDate":"2017-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76924399","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

Higher-Order Squeezing of a Generic Quadratically-Coupled Optomechanical System 一类一般二次耦合光力学系统的高阶压缩

IOSR Journal of Applied Physics Pub Date : 2017-02-01 DOI: 10.9790/4861-0901019095

K. Mukherjee, P. Jana

引用次数: 5

Evaluation of the mass attenuation coefficient and Effective Atomic Number of the Eremurus spp. Root in Mammography Energy Range 乳房x线造影能量范围内巨噬菌质量衰减系数和有效原子序数的评价

IOSR Journal of Applied Physics Pub Date : 2017-02-01 DOI: 10.9790/4861-090101100104

Ehsan Taghizadeh Tousi, R. Hashim, S. Bauk, M. Jaafar

引用次数: 7

Equivalent Thicknesses of Lead and Fly ash Geopolymer with Addition of Barium Sulphate in Radiation Protection 添加硫酸钡的铅与粉煤灰地聚合物在辐射防护中的等效厚度

IOSR Journal of Applied Physics Pub Date : 2017-02-01 DOI: 10.9790/4861-0901025156

Sabri M. Shalbi, M. Jaafar, N. M. Ahmed, A. Al-jarrah, A. Naji, M. Qaeed

引用次数: 1

Studies of Dielectric Constant, Dielectric Loss, Loss Tangent and Dielectric Relaxation Time of Some Halobenzene and Nitrobenzene at X-Band Microwave Frequency 某些卤苯和硝基苯在x波段微波频率下介电常数、介电损耗、损耗正切和介电弛豫时间的研究

IOSR Journal of Applied Physics Pub Date : 2017-02-01 DOI: 10.9790/4861-0901022427

Utpal Baruah

{"title":"Studies of Dielectric Constant, Dielectric Loss, Loss Tangent and Dielectric Relaxation Time of Some Halobenzene and Nitrobenzene at X-Band Microwave Frequency","authors":"Utpal Baruah","doi":"10.9790/4861-0901022427","DOIUrl":"https://doi.org/10.9790/4861-0901022427","url":null,"abstract":"The arrangement of waves or radiation in order of increasing frequencies is called electromagnetic spectrum. Frequency of microwave region is 300MHz to 300GHz. Corresponding wavelength is in between 1mm to 100cm. Here by using a microwave bench dielectric properties such as dielectric constant, dielectric loss, loss tangent and dielectric relaxationtime of Dichlorobenzene, Bromobenzene and Nitrobenzene in different temperatures at X band frequrency are measured. Gopalakrishnan method is used for determination of relaxation time. Here real (€ / ) and imaginary (€\")parts of complex dielectric constant( €*) were determined in the 3cm microwave region for different concentration of Dichlorobenzene, Bromobenzene and Nitrobenzene in Cyclohaxene at temperatures 24 0 C, 33 0 C and 41 0 C .The measurement were made at a frequency of 9.98GHz. From the study of relaxation time polarity of above three compounds are studied. From the structural point of view the most interesting Dielectric Relaxation is that involving orientation polarization which depends on the internal structure of molecules and on the molecular arrangement or structure of the dielectric. Dielectric relaxation is the lag in dipole orientation behind an alternating electric field. From the study it is found that relaxation time of these solute is more in Cyclohexane then in Benzene. This behavour can be explained from the fact that Cyclohexane has more internal friction than Benzene.","PeriodicalId":14502,"journal":{"name":"IOSR Journal of Applied Physics","volume":"6 1","pages":"24-27"},"PeriodicalIF":0.0,"publicationDate":"2017-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74395267","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 Ni-doped Yttria stabilized Zirconia composite for SOFC applications as Anodic material 作为SOFC阳极材料的ni掺杂氧化钇稳定氧化锆复合材料的研制

IOSR Journal of Applied Physics Pub Date : 2017-02-01 DOI: 10.9790/4861-0901021523

V. Mohanta, S. Das, B. Roul

{"title":"Development of Ni-doped Yttria stabilized Zirconia composite for SOFC applications as Anodic material","authors":"V. Mohanta, S. Das, B. Roul","doi":"10.9790/4861-0901021523","DOIUrl":"https://doi.org/10.9790/4861-0901021523","url":null,"abstract":"Ni-doped Yttria stabilized Zirconia (NiO/YSZ) has been synthesized using low cost combustion process from an aqueous solution containing ZrO(NO3)2.6H2O, Y(NO3)3.6H2O, Ni(NO3)2.6H2O and urea. Pellets were sintered at 1350 0 C for 5 hours and its sintered density is estimated to be of 95%. Sintered pellets were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM) & X-ray photoelectron spectroscopy (XPS) techniques. From the XRD analysis, as grown powder of NiO/YSZ showed nano-crystalline behavior with homogeneous mixture of YSZ and NiO phases. However sintered powder showed μ-size dense grain growth. Temperature and frequency dependent dielectric properties are corroborated with the conduction mechanism. Both dielectric constant (K) and loss (tan δ) are increased sharply at high temperature region, which is expected to be the onset of dipolar relaxation phenomena due to the presence of oxygen vacancies. A mixed conductivity involving ionic conduction in the high temperature range and electronic conduction in the low temperature range was observed. The decrease in K and tan δ with increase in frequency at a given temperature suggests the dynamic interaction of oxygen vacancies & oxide ion pairs.","PeriodicalId":14502,"journal":{"name":"IOSR Journal of Applied Physics","volume":"24 1","pages":"15-23"},"PeriodicalIF":0.0,"publicationDate":"2017-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78847702","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

To the Issue of Reconciling Quantum Mechanics and General Relativity 论调和量子力学与广义相对论的问题

IOSR Journal of Applied Physics Pub Date : 2017-02-01 DOI: 10.9790/4861-0901030919

F. S. I

{"title":"To the Issue of Reconciling Quantum Mechanics and General Relativity","authors":"F. S. I","doi":"10.9790/4861-0901030919","DOIUrl":"https://doi.org/10.9790/4861-0901030919","url":null,"abstract":"The notion of gravitational radiation as a radiation of the same level as the electromagnetic radiation is based on theoretically proved and experimentally confirmed fact of existence of stationary states of an electron in its gravitational field characterized by the gravitational constant K = 10 42 G (G is the Newtonian gravitational constant) and unrecoverable space-time curvature Λ. If the numerical values of K  5.110 Nm 2 kg -2 and  =4.410 m , there is a spectrum of stationary states of the electron in its own gravitational field (0.511 MeV ... 0.681 MeV).Adjusting according to the known mechanisms of broadening does not disclose the broadening of the registered portion of the emission spectrum of the micropinch. It indicates the presence of an additional mechanism of broadening the registered portion of the spectrum of the characteristic radiation due to the contribution of the excited states of electrons in their own gravitational field. The energy spectrum of the electron in its own gravitational field and the energy spectra of multielectron atoms are such that there is a resonance of these spectra. As obvious, the consequence of such resonant interaction is appearance, including new lines, of electromagnetic transitions not associated with atomic transitions. The manuscript is the review of previously published papers cited in the references.","PeriodicalId":14502,"journal":{"name":"IOSR Journal of Applied Physics","volume":"20 1","pages":"09-19"},"PeriodicalIF":0.0,"publicationDate":"2017-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89597616","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

Pion Form Factor Contribution in Vacuum Polarization corrections for 1s energy level in different Pionic-Hydrogen Atoms 介子形状因子对不同离子-氢原子1s能级真空偏振校正的贡献

IOSR Journal of Applied Physics Pub Date : 2017-02-01 DOI: 10.9790/4861-0901032026

M. E. Shabshiry

引用次数: 0

Disaggregation of Annual to daily Streamflows: A linear deterministic method 年流量到日流量的分解:一种线性确定性方法

IOSR Journal of Applied Physics Pub Date : 2017-02-01 DOI: 10.9790/4861-0901023443

Shatha H. D. AL-Zakar, N. Şarlak

引用次数: 0