Russian Physics Journal最新文献_第4页

High-sensitivity FIR optical thermometry based on Sr3La2Ge3O12:Er3+/Yb3+ up-conversion phosphors 基于Sr3La2Ge3O12:Er3+/Yb3+上转换荧光粉的高灵敏度FIR光学测温

IF 0.8 4区物理与天体物理

Russian Physics Journal Pub Date : 2026-06-01 DOI: 10.1007/s11182-026-03694-2

S. Y. Liu, D. Gao, H. Yin, J. D. Dong, H. Y. Liu, L. Wang, W. B. Song, X. Chen

{"title":"High-sensitivity FIR optical thermometry based on Sr3La2Ge3O12:Er3+/Yb3+ up-conversion phosphors","authors":"S. Y. Liu, D. Gao, H. Yin, J. D. Dong, H. Y. Liu, L. Wang, W. B. Song, X. Chen","doi":"10.1007/s11182-026-03694-2","DOIUrl":"10.1007/s11182-026-03694-2","url":null,"abstract":"<div><p>In recent years, rare-earth-doped up-conversion luminescent materials have been widely applied across various fields. In practical applications, we have observed that different dopant ions exert various effects on numerous host materials. Based on this, we successfully synthesized a dual-excited Sr<sub>3</sub>La<sub>2</sub>Ge<sub>3</sub>O<sub>12</sub> (SLGO) material. By introducing Yb<sup>3+</sup>/Er<sup>3+</sup> in designed phosphor, it exhibits green and red emissions under 980 nm and 1550 nm excitation, respectively, making it suitable for a variety of scientific and technological applications. Systematic investigation of up-conversion mechanisms driven by different excitation sources, show that adjusting the molar ratio of Er<sup>3+</sup> to Yb<sup>3+</sup> can significantly enhance the material performance, making it highly suitable as a high-performance optical thermometer based on FIR technology. These results demonstrate that SLGO:Er<sup>3+</sup>/Yb<sup>3+</sup> phosphors exhibit unique temperature sensing characteristics, highlighting their potential as temperature sensors.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"69 2","pages":"235 - 243"},"PeriodicalIF":0.8,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148699632","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

Stepped single-slope solar still using MWCNT nanofluid and nano-enhanced PCM 阶梯式单坡太阳能仍采用MWCNT纳米流体和纳米增强型PCM

IF 0.8 4区物理与天体物理

Russian Physics Journal Pub Date : 2026-06-01 DOI: 10.1007/s11182-026-03695-1

V. Kumar, D. Singh, S. P. Singh, P. K. Mall, S. Kumar, K. Sadhana

引用次数: 0

Control system for parallel-operating pumping units 并联抽油机的控制系统

IF 0.8 4区物理与天体物理

Russian Physics Journal Pub Date : 2026-04-14 DOI: 10.1007/s11182-026-03685-3

R. B. Kossymbayev, F. N. Bulatbayev, Yu. F. Bulatbayeva

引用次数: 0

Model of a liquid as a low-stable structured system 液体作为低稳定结构系统的模型

IF 0.8 4区物理与天体物理

Russian Physics Journal Pub Date : 2026-04-14 DOI: 10.1007/s11182-026-03687-1

A. I. Potekaev, V. V. Obukhov

引用次数: 0

IF 0.8 4区物理与天体物理

Russian Physics Journal Pub Date : 2026-04-14 DOI: 10.1007/s11182-026-03691-5

A. Ghosh, G. Nath

{"title":"Similarity analysis for cylindrical shock wave in a low conducting rotating non-ideal gas in the presence of axial and azimuthal magnetic inductions using the Lie group theoretic method","authors":"A. Ghosh, G. Nath","doi":"10.1007/s11182-026-03691-5","DOIUrl":"10.1007/s11182-026-03691-5","url":null,"abstract":"<div><p>The Lie group analysis method is employed to obtain the similarity solutions for shock waves in a low conducting rotating non-ideal gas having axial and azimuthal magnetic inductions for cylindrical geometry. The governing partial differential equations representing the physical scenario are converted into ordinary differential equations using the transformations obtained by the Lie group theoretic method. For the existence of a similarity solution, the ambient medium must have a constant initial density. The initial axial and azimuthal magnetic inductions are determined, which follow the power law. The 4‑th order Runge–Kutta technique is employed to solve the derived set of ordinary differential equations. We have examined the impacts of variations in the adiabatic index, non-idealness parameter, magnetic Reynolds number, axial, and azimuthal Cowling numbers on the strength of the shock along with the flow variables behind the shock front in the flow field region. The analysis reveals that the strength of the shock reduces with an increase in the adiabatic index, magnetic Reynolds number, non-idealness parameter, azimuthal and axial Cowling numbers, and rotational parameter.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"69 1","pages":"135 - 148"},"PeriodicalIF":0.8,"publicationDate":"2026-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695509","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

Analytical prediction of absorption threshold frequency in quantum dots by considering the position-dependent effective mass 考虑位置相关有效质量的量子点吸收阈值频率分析预测

IF 0.8 4区物理与天体物理

Russian Physics Journal Pub Date : 2026-04-14 DOI: 10.1007/s11182-026-03681-7

Reza Khordad, Ali Hassan Bahamin Pili

引用次数: 0

On the issue of edge sharpening of a high-voltage nanosecond voltage pulse using corrugated gyromagnetic lines with saturated ferrite 利用饱和铁氧体波纹磁磁线对高压纳秒级电压脉冲进行锐化

IF 0.8 4区物理与天体物理

Russian Physics Journal Pub Date : 2026-04-14 DOI: 10.1007/s11182-026-03676-4

V. Yu. Konev, O. O. Mutylin, R. K. Sobyanin, I. V. Romanchenko

引用次数: 0

Synthesis and structural-optical investigation of ZnO-Cd nanoparticles prepared by plasma jet method 等离子体喷射法制备ZnO-Cd纳米颗粒的合成及结构光学研究

IF 0.8 4区物理与天体物理

Russian Physics Journal Pub Date : 2026-04-14 DOI: 10.1007/s11182-026-03683-5

Wassan D. Hussain, Sarah Faris Khaleel, Mohammed H. Jawad, Kadhim A. Aadim

{"title":"Synthesis and structural-optical investigation of ZnO-Cd nanoparticles prepared by plasma jet method","authors":"Wassan D. Hussain, Sarah Faris Khaleel, Mohammed H. Jawad, Kadhim A. Aadim","doi":"10.1007/s11182-026-03683-5","DOIUrl":"10.1007/s11182-026-03683-5","url":null,"abstract":"<div><p>In this study, zinc cadmium oxide (ZnO:Cd) nanoparticles were prepared using the technique of plasma jetting for different time periods of 15, 25, and 35 min. The aim of the study is to investigate the effect of these time periods on the optical and structural properties of the produced nanoparticles. Plasma jetting technique provides precise control over the particle size and composition, which is very important, because it contributes to modifying the properties of the material to suit its future applications in optoelectronics, sensing, and catalysis. By examining X‑ray diffraction (XRD), scanning electron microscopy (SEM), ultraviolet-visible (UV-Vis) spectroscopy, and atomic force microscopy (AFM) results, it has been established that increasing the plasma jetting exposure time improves the crystal arrangement and decorated the particle size. At 25 min, the crystals become more regular, and the particle sizes increase, while at 35 min, the crystal arrangement improves, but with an increase in internal distortions. According to the SEM examination, the particles become more homogeneous and smaller with increasing time. UV-Vis examination demonstrates that the absorbance increased with time, especially at 35 min, indicating more absorbance of UV light. The energy gap is larger in pure ZnO, but decreases with the addition of cadmium, indicating improved conductivity and reduced internal tension. According to the AFM, the surface is smoother and less rough with increasing exposure time. Overall, the study shows that increasing plasma exposure time improves crystalline ordering, absorbance, and surface roughness, which are very important factors for increasing the efficiency of applications in various fields. However, when the exposure time is increased significantly, internal deformations start to affect the overall stability of the material.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"69 1","pages":"59 - 69"},"PeriodicalIF":0.8,"publicationDate":"2026-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695507","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

Electromagnetic water treatment in cooling systems of coal mills in thermal power plants 热电厂燃煤机冷却系统中的电磁水处理

IF 0.8 4区物理与天体物理

Russian Physics Journal Pub Date : 2026-04-14 DOI: 10.1007/s11182-026-03686-2

O. V. Aldoshina, A. D. Mekhtiyev, A. D. Alkina, R. A. Mekhtiyev, Y. G. Neshina, A. V. Yurchenko, D. N. Miroshnichenko

{"title":"Electromagnetic water treatment in cooling systems of coal mills in thermal power plants","authors":"O. V. Aldoshina, A. D. Mekhtiyev, A. D. Alkina, R. A. Mekhtiyev, Y. G. Neshina, A. V. Yurchenko, D. N. Miroshnichenko","doi":"10.1007/s11182-026-03686-2","DOIUrl":"10.1007/s11182-026-03686-2","url":null,"abstract":"<div><p>The paper presents the water treatment method for thermal power plants and cogeneration installations associated with the electromagnetic treatment of industrial water using powerful DC electromagnets. This method is well-known and has already been used in the mid-nineteenth century. With the development of the chemical industry, it is almost completely replaced by other techniques. It is necessary to reduce or eliminate the use of harmful chemicals and thus search for more eco-friendly and less expensive methods of combating the scale formation. This problem occurs in the production and is the most relevant for water treatment systems at thermal power plants and cogeneration installations utilizing DC electromagnets, since they are eco-friendly, and their cost is lower than that of chemical reagents. The obtained results confirm the DC electromagnets efficiency in changing parameters of water hardness and reducing the scale formation. The method can be used to improve the efficiency of thermal power equipment and in water cooling and treatment systems for various technological cycles in metallurgical and manufacturing industries.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"69 1","pages":"84 - 90"},"PeriodicalIF":0.8,"publicationDate":"2026-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695417","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

Study of Self-focusing on stimulated Brillouin scattering of q-Gaussian laser beam in unmagnetized plasma: paraxial approach 非磁化等离子体中q-高斯激光束受激布里渊散射的自聚焦研究：近轴方法

IF 0.8 4区物理与天体物理

Russian Physics Journal Pub Date : 2026-04-14 DOI: 10.1007/s11182-026-03668-4

Ahmed S. Ahmed, M. Niroozad

引用次数: 0