Indian Journal of Pure & Applied Physics最新文献_第5页

Statistical Model Analysis of Neutron Multiplicities from Fission of Compound Nuclei in ~ 200 and 250 Mass Region ~ 200和250质量区复合核裂变中子多重度的统计模型分析

4区物理与天体物理

Indian Journal of Pure & Applied Physics Pub Date : 2023-01-01 DOI: 10.56042/ijpap.v61i11.2609

{"title":"Statistical Model Analysis of Neutron Multiplicities from Fission of Compound Nuclei in ~ 200 and 250 Mass Region","authors":"","doi":"10.56042/ijpap.v61i11.2609","DOIUrl":"https://doi.org/10.56042/ijpap.v61i11.2609","url":null,"abstract":"Statistical model analysis has been performed with and without the inclusion of shell correction in level density and the collective enhancement of level density (CELD) effect for two different mass regions of compound nuclei, i.e., ~ 200 and 250 for the currently available data of neutron multiplicity (Mpre) in the literature in both mass regions. The chosen reactions have comparable excitation energy range. The measured neutron multiplicities are found to be increasing with the excitation energy of the compound nuclei for all the studied reactions except for 19F + 184W. The calculated values of pre-scission neutron multiplicities are found to be significantly underestimated when compared to the experimental values for overlapping excitation energy range for both mass regions and found to be further underestimated in the heavier mass region (ACN ~ 250) as compared to the relatively lighter mass region (ACN ~ 200). The dissipation strength required to reproduce experimental values is found to increase with an increase in excitation energy of the compound nucleus in both the mass regions. Dissipation strength was found to be higher when the effects of shell correction in level density and CELD were included as compared to the dissipation obtained without incorporating these effects.","PeriodicalId":13509,"journal":{"name":"Indian Journal of Pure & Applied Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136304773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Estimation of Exhalation Rates of Radon and Thoron in the Soil Samples Collected from Gurugram, Haryana, India 印度哈里亚纳邦Gurugram土壤样品中氡和钍的呼出率估计

4区物理与天体物理

Indian Journal of Pure & Applied Physics Pub Date : 2023-01-01 DOI: 10.56042/ijpap.v61i11.2657

{"title":"Estimation of Exhalation Rates of Radon and Thoron in the Soil Samples Collected from Gurugram, Haryana, India","authors":"","doi":"10.56042/ijpap.v61i11.2657","DOIUrl":"https://doi.org/10.56042/ijpap.v61i11.2657","url":null,"abstract":"Natural radioactivity is the term used to describe radioactivity that persists in the soil, rocks, and water due to fundamental radionuclides such as uranium, thorium, potassium, etc. As a result, radiation affects everyone on the planet. Researchers worldwide find this topic particularly interesting due to the hazardous effects of radionuclides on human health. A systematic survey employing trustworthy methodological approaches is necessary to objectively assess these radionuclides in the environment. In the present paper, ZnS:Ag scintillator-based SMART RnDuo (AQTEK System, India) is used to measure exhalation rates of isotopes 222Rn and 220Rn (radon and thoron) of soil samples. Forty soil samples were studied. For the study of 222Rn, monitoring of the mass exhalation (Rm) was conducted. In the case of 220Rn, monitoring of surface exhalation (Rs) was studied. The radon mass exhalation rate is found in the range of 14±1 to 55±5 mBqkg−1h−1 with an average of 34±10 mBqkg−1h−1 and thoron surface exhalation rate in the range of 2200±215 to 7560±420 Bqm−2h−1 with an average of 4280±960 Bqm−2h−1. Thus, elevated thoron level is observed in most of the samples. Results are compared with the world’s average values.","PeriodicalId":13509,"journal":{"name":"Indian Journal of Pure & Applied Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136305021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unravelling the Ultralow Thermal Conductivity of Ternary Antimonide Zintl Phase RbGaSb2: A First-principles Study 揭开三元锑锌RbGaSb2的超低导热性:第一性原理研究

4区物理与天体物理

Indian Journal of Pure & Applied Physics Pub Date : 2023-01-01 DOI: 10.56042/ijpap.v61i9.3152

引用次数: 0

Adsorption of RB dye by Ce and Er Doped SnO2 Photocatalysts for Water Remediation Ce和Er掺杂SnO2光催化剂对RB染料的吸附及水处理

4区物理与天体物理

Indian Journal of Pure & Applied Physics Pub Date : 2023-01-01 DOI: 10.56042/ijpap.v61i9.3407

引用次数: 0

Influence of Various Parameters on the Triboelectric Generation of Bulk Materials 不同参数对块状材料摩擦发电的影响

4区物理与天体物理

Indian Journal of Pure & Applied Physics Pub Date : 2023-01-01 DOI: 10.56042/ijpap.v61i9.4741

{"title":"Influence of Various Parameters on the Triboelectric Generation of Bulk Materials","authors":"","doi":"10.56042/ijpap.v61i9.4741","DOIUrl":"https://doi.org/10.56042/ijpap.v61i9.4741","url":null,"abstract":"In this paper we report the study of mechanical energy harvesting of ambient energy based on triboelectric effect. We choose the bulk form of poly-tetrafluoroethylene (PTFE) as electronegative (E-) material and human hand and plywood as the electropositive (E+) materials, respectively making a single electrode based triboelectric generator (TEG). The E+ and E- material were rubbed together to produce a voltage output, which was measured by using a sensitive electrometer. This investigation was carried out for different surface morphology, surface areas of contact, thickness and types of electrode contacts and rubbing frequency. It was observed that sufficient voltage and charge generation was achieved to power low energy devices like LED bulbs, with the highest voltage generation of ~6.2 V for rectangular PTFE sheet, having one surface coated with a thin film of copper for making electrode and other one is made rough using sandpaper, as the E- material and plywood as the E+ material. We observed that the voltage output is influenced by the surface morphology, type of E+ material for the same E- material, frequency of rubbing strokes and frictional area of contact.","PeriodicalId":13509,"journal":{"name":"Indian Journal of Pure & Applied Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135496250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Ag Layer Thickness and Interference of Cu-SnO2/Ag/Cu-SnO2 (CTO/Ag/CTO) Multilayer Thin Film on the Electrical and Optical Properties Cu-SnO2/Ag/Cu-SnO2 (CTO/Ag/CTO)多层薄膜Ag层厚度和干涉对电学和光学性能的影响

4区物理与天体物理

Indian Journal of Pure & Applied Physics Pub Date : 2023-01-01 DOI: 10.56042/ijpap.v61i9.3498

引用次数: 0

Quantum Transport in Mesoscopic Systems 介观系统中的量子输运

IF 0.7 4区物理与天体物理

Indian Journal of Pure & Applied Physics Pub Date : 2021-01-06 DOI: 10.3390/books978-3-03943-367-4

A. Jayannavar

引用次数: 37

Temperature dependence of dielectric constant and loss tangent in methyl ammonium aluminium alum 甲基铵铝明矾介电常数和损耗正切的温度依赖性

IF 0.7 4区物理与天体物理

Indian Journal of Pure & Applied Physics Pub Date : 2016-03-22 DOI: 10.7598/cst2016.1206

A. Rawat

引用次数: 0

Plasmon characteristics in stage-1 graphene intercalation compounds 一级石墨烯插层化合物中的等离子体特性

IF 0.7 4区物理与天体物理

Indian Journal of Pure & Applied Physics Pub Date : 2015-05-18 DOI: 10.1063/1.4915393

S. Acharya, Raman Sharma

引用次数: 1

Ecological, exergetic efficiency and heating load optimizations for irreversible variable-temperature heat reservoir simple air heat pump cycles 不可逆变温蓄热器简单空气热泵循环的生态、有效效率和热负荷优化

IF 0.7 4区物理与天体物理

Indian Journal of Pure & Applied Physics Pub Date : 2009-12-01 DOI: 10.1093/IJLCT/CTP037

Y. Bi, Lingen Chen, F. Sun

{"title":"Ecological, exergetic efficiency and heating load optimizations for irreversible variable-temperature heat reservoir simple air heat pump cycles","authors":"Y. Bi, Lingen Chen, F. Sun","doi":"10.1093/IJLCT/CTP037","DOIUrl":"https://doi.org/10.1093/IJLCT/CTP037","url":null,"abstract":"Thermodynamic optimization of an irreversible air heat pump with variable-temperature heat reservoirs and hot- and cold-side counter-flow heat exchangers has been studied. The expressions of the heating load, the exergetic efficiency and the ecological function of the heat pump cycle are derived. Performance comparisons among exergetic efficiency optimization, ecological optimization and traditional heating load optimization objectives are done. The effect of the pressure ratio of the compressor, the allocation of heat exchanger inventory and the heat capacity rate matching between the working fluid and the heat reservoirs on the optimal performance of the cycle has been investigated by detailed numerical examples. When the performance optimization of the cycle is carried out by selecting the pressure ratio, three optimization objectives give simultaneously attention to the coefficient of performance (COP). The pressure ratio should be the one that is little bigger than the optimum pressure ratio corresponding to maximum COP, however, the results of three optimization objectives are consistent by optimizing the allocation of heat exchanger inventory and optimizing the heat capacity rate matching between the working fluid and the heat reservoirs. The optimum allocations of heat conductance are close to each other, and they are all less than 0.5. The results may provide guidelines for the design and optimization of practical air heat pump plants.","PeriodicalId":13509,"journal":{"name":"Indian Journal of Pure & Applied Physics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1093/IJLCT/CTP037","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60782008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6