Journal of Physical Studies最新文献_第9页

Effect of the carbonization temperature of plant biomass on the structure, surface condition and electrical conductive properties of carbon nanoporous material 植物生物质炭化温度对碳纳米孔材料结构、表面状态及导电性能的影响

IF 0.5

Journal of Physical Studies Pub Date : 2021-01-01 DOI: 10.30970/jps.25.3801

N. Ivanichok, O. Ivanichok, B. Rachiy, P. Kolkovskyi, I. Budzulyak, V. Kotsyubynsky, V. Boychuk, L. Khrushch

引用次数: 2

Reformulation of transmission and reflection problems in terms of quantum wave impedance function 用量子波阻抗函数重新表述透射和反射问题

IF 0.5

Journal of Physical Studies Pub Date : 2020-10-09 DOI: 10.30970/jps.25.4001

O. Hryhorchak

引用次数: 10

Solvable two-particle systems with time-asymmetric interactions in de Sitter space 德西特空间中具有时间不对称相互作用的可解双粒子系统

IF 0.5

Journal of Physical Studies Pub Date : 2020-07-06 DOI: 10.30970/jps.26.3002

A. Duviryak

引用次数: 0

The dependence of the Fourier spectrum of oscillations of the amplitude function of the incommensurate superstructure on the magnitude of the anisotropic interaction interacting with Dzialoszynski invariant 与Dzialoszynski不变量相互作用的各向异性相互作用的幅值函数的振荡傅立叶谱的依赖

IF 0.5

Journal of Physical Studies Pub Date : 2020-01-01 DOI: 10.30970/jps.24.4603

S. Sveleba, I. Katerynchuk, I. Kuno, I. Karpa, O. Semotyuk

{"title":"The dependence of the Fourier spectrum of oscillations of the amplitude function of the incommensurate superstructure on the magnitude of the anisotropic interaction interacting with Dzialoszynski invariant","authors":"S. Sveleba, I. Katerynchuk, I. Kuno, I. Karpa, O. Semotyuk","doi":"10.30970/jps.24.4603","DOIUrl":"https://doi.org/10.30970/jps.24.4603","url":null,"abstract":"The Fourier spectra of the incommensurate modulation and the dependence of the wave vector (q) of the incommensurate (IC) superstructure on the magnitude of the anisotropic interaction described by the Dzialoszynski invariant (K) and the long-range interaction (T) are investigated. Fourier spectra in di(cid:27)erent modulation modes of incommensurate superstructure analyzed. The calculation of the spatial changes of the amplitude and phase of the order parameter was performed by the numerical BDF (Backward Di(cid:27)erentiation Formula) method and was performed in the Python environment using the SciPy, JiTCODE libraries according to the method described in the paper. The parameters T and K, which are responsible for the long-range and anisotropic interactions, respectively, in the (cid:28)rst approximation well describe the behavior of the wave vector of the IC modulation, and its modes. The emergence of IC modulation is accompanied by the appearance of an unstable chaotic state in the case of a nonzero value of the anisotropic interaction. The increase in the value of the anisotropic interaction in the IC phase is accompanied by a change in both the frequency of existing oscillations and the magnitude of their contribution to the formation of a wave of the incommensurate modulation, causing a change in the IC modulation regime. The transition from the one mode to another is continuous. The modes themselves are determined by the domination of the contribution of the respective oscillation frequencies. The whole spectrum of possible frequencies arises at the modulation wave origin. With an increase of the anisotropic interaction, their harmonics emerge and their contribution is redistributed.","PeriodicalId":43482,"journal":{"name":"Journal of Physical Studies","volume":"38 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84853147","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

Polystyrene composites with loaded LaF3 nanoparticles for registration of ionizing radiation 负载LaF3纳米粒子的聚苯乙烯复合材料用于电离辐射登记

IF 0.5

Journal of Physical Studies Pub Date : 2020-01-01 DOI: 10.30970/jps.24.4709

M. Dendebera, A. Zhyshkovych, T. Malyi, L. Demkiv, N. Gloskovska, T. Demkiv, V. Vistovskyy, A. Gektin, A. Voloshinovskii

{"title":"Polystyrene composites with loaded LaF3 nanoparticles for registration of ionizing radiation","authors":"M. Dendebera, A. Zhyshkovych, T. Malyi, L. Demkiv, N. Gloskovska, T. Demkiv, V. Vistovskyy, A. Gektin, A. Voloshinovskii","doi":"10.30970/jps.24.4709","DOIUrl":"https://doi.org/10.30970/jps.24.4709","url":null,"abstract":"Film polymer composite scintillators based on scintillation polystyrene with n-terphenyl and POPOP activators and loaded LaF 3 nanoparticles have been developed for the registration of ionizing radiation. LaF 3 nanoparticles were obtained through precipitation involving ion substitution from LaCl 3 water and water-alcohol solution with the addition of NH 4 F solution. The spectral and kinetic properties of polymer nanocomposites under X-ray irradiation have been studied. It was found that the e(cid:30)ciency of the ionizing radiation detection for a polystyrene composite with loaded non-luminescence LaF 3 nanoparticles increases by an order of magnitude compared to the e(cid:30)ci-ency of a polystyrene scintillator without nanoparticles, maintaining the spectral composition of the polystyrene scintillator radiation and its speed was 3 ns. It is proposed that the main mechanism of the scintillation generation is the excitation of polystyrene matrix by electrons that escape from the nanoparticle by the mechanism of photoe(cid:27)ect under the in(cid:29)uence of","PeriodicalId":43482,"journal":{"name":"Journal of Physical Studies","volume":"77 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73029253","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

Thermochromic properties of nano- and microcomposites based on (NH2(C2H5)2)2CuCl4 crystals 基于(NH2(C2H5)2)2CuCl4晶体的纳米和微复合材料的热致变色性能

IF 0.5

Journal of Physical Studies Pub Date : 2020-01-01 DOI: 10.30970/jps.24.4707

V. Kapustianyk, Yu Chornii, S. Semak

引用次数: 1

Thermophysical properties of multicomponent model high-entropy melts 多组分模型高熵熔体的热物理性质

IF 0.5

Journal of Physical Studies Pub Date : 2020-01-01 DOI: 10.30970/jps.24.4602

M. Dufanets, V. Sklyarchuk, Y. Plevachuk

引用次数: 0

Evaluation of the difference of pseudorandom signal from white noise using a parameter of energy spectrum model of the signal 利用信号的能量谱参数模型评价伪随机信号与白噪声的差值

IF 0.5

Journal of Physical Studies Pub Date : 2020-01-01 DOI: 10.30970/jps.24.2003

Z. Kolodiy, J. Z. Zvizlo

引用次数: 0

Line profiles and magnetic fields in the limb solar flare of July 17, 1981. Preliminary results 1981年7月17日太阳耀斑边缘的线廓线和磁场。初步结果

IF 0.5

Journal of Physical Studies Pub Date : 2020-01-01 DOI: 10.30970/jps.24.2901

V. Lozitsky, I. Yakovkin, N. Lozitska

{"title":"Line profiles and magnetic fields in the limb solar flare of July 17, 1981. Preliminary results","authors":"V. Lozitsky, I. Yakovkin, N. Lozitska","doi":"10.30970/jps.24.2901","DOIUrl":"https://doi.org/10.30970/jps.24.2901","url":null,"abstract":"The limb solar (cid:29)are of 17 July 1981 is studied according to the observations carried out with the Echelle spectrograph of a horizontal solar telescope of the Astronomical Observatory of Taras Shevchenko National University of Kiev. For 8 h 17 m UT, close to the (cid:29)ash phase, the I ± V pro(cid:28)les of the K Ca II 3933.7 (cid:6)A and He I 4471.5 (cid:6)A lines are analyzed. At the indicated moment, these lines had two components of emission, narrow and wide, which were mutually shifted on 1.8(cid:21)2 (cid:6)A. The narrow component had a full half-width of 0.24 (cid:6)A in the K Ca II line and 0.34 (cid:6)A in the He I line. The wide component had the full half-widths of 3.3 (cid:6)A and 4.1 (cid:6)A, respectively, for these lines. The magnetic (cid:28)eld magnitude in the (cid:29)are, measured by splitting the narrow component, varies in the picture plane and reaches 1300 ± 200 G for the K Ca II line and 2100 ± 200 G for the He I line. Such features are found at the altitudes of about 10(cid:21)14 Mm above the level of the photosphere. It is important to note that the true values of the local magnetic (cid:28)elds in the (cid:29)are could be even larger, since the obtained results represent a longitudinal component of the magnetic (cid:28)eld, with the assumption that the (cid:28)lling factor equals unity. On the basis of the comparison of the Doppler widths of the narrow component in the two lines under study, the following estimations of kinetic temperature and turbulent velocity were obtained: T = 17000 ± 1000 K, and ξ turb = 10 . 8 ± 0 . 3 km/sec.","PeriodicalId":43482,"journal":{"name":"Journal of Physical Studies","volume":"31 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79330908","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

On the noncommutative geometry in quantum mechanics 论量子力学中的非交换几何

IF 0.5

Journal of Physical Studies Pub Date : 2020-01-01 DOI: 10.30970/jps.24.2002

Ilyas Haouam

引用次数: 12