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Comparison between the Theoretical Calculation of Coulomb Form Factors and Experimental Data for 12C and 20Ne Nuclei 12C和20Ne原子核库仑形状因子的理论计算与实验数据的比较
IF 0.5
Ukrainian Journal of Physics Pub Date : 2023-05-11 DOI: 10.15407/ujpe68.3.162
H. M. Dlshad, A. Fatah
{"title":"Comparison between the Theoretical Calculation of Coulomb Form Factors and Experimental Data for 12C and 20Ne Nuclei","authors":"H. M. Dlshad, A. Fatah","doi":"10.15407/ujpe68.3.162","DOIUrl":"https://doi.org/10.15407/ujpe68.3.162","url":null,"abstract":"The Coulomb form factors for the elastic and inelastic electron-nucleus scatterings have been calculated for 12C and 20Ne nuclei in the ground and excited states with the same parity. We use a microscopic theory involving the effects from high configurations outside the model space, which are called the Core Polarization (CP) effects. For the core polarization matrix elements, the realistic Michigan sum of the three-range Yukawa (M3Y) interaction and the Modified Surface Delta Interaction (MSDI) are used as the two-body interactions. Additionally, the Harmonic Oscillators (HO) potential is applied to calculate wave functions. In the final step, a comparison has been made between the theoretical calculations of Coulomb form factors based on (M3Y) and (MSDI) interactions and the available experimental data. It is noticed that the Coulomb form factors for the (M3Y) interaction give a sensible delineation of the measured data.","PeriodicalId":23400,"journal":{"name":"Ukrainian Journal of Physics","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48709368","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
Вихідний потік зв’язуючого нейрона з порогом 2, стимульованого процесом відновлення
IF 0.5
Ukrainian Journal of Physics Pub Date : 2023-05-11 DOI: 10.15407/ujpe68.3.170
O. V. Shchur
{"title":"Вихідний потік зв’язуючого нейрона з порогом 2, стимульованого процесом відновлення","authors":"O. V. Shchur","doi":"10.15407/ujpe68.3.170","DOIUrl":"https://doi.org/10.15407/ujpe68.3.170","url":null,"abstract":"Iнформацiя в мозку передається мiж нейронами за допомогою стереотипних електричних iмпульсiв, якi називаються спайками. Оскiльки активнiсть бiологiчних нейронiв є випадковою, ми вивчаємо статистику нейронної активностi, а саме часових iнтервалiв мiж послiдовно згенерованими нейроном спайками. Нейрон перетворює випадковий потiк вхiдних iмпульсiв в iнший, вихiдний потiк. Вхiдний потiк у цiй роботi описується як точковий процес вiдновлення. У якостi нейронної моделi розглядається модель зв’язуючого нейрона з порогом 2. Отримано зв’язок мiж перетвореннями Лапласа функцiй розподiлу мiжспайкових iнтервалiв для вхiдного потоку iмпульсiв та для вихiдного потоку, згенерованого у вiдповiдь на цей стимул. Отримане спiввiдно-шення дозволяє знайти саму функцiю розподiлу та всi її моменти. Отриманi формули були застосованi до випадку, коли вхiдний процес є процесом Ерланга. Зокрема, для розглянутого випадку було знайдено залежнiсть регулярностi нейронної активностi вiд параметрiв вхiдного потоку та фiзичних параметрiв нейронної моделi.","PeriodicalId":23400,"journal":{"name":"Ukrainian Journal of Physics","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44684642","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
Reactivity Measurement Methods and the First Results of the Physical Start-up for the Nuclear Subcritical Facility “Neutron Source” 核亚临界设施“中子源”的反应性测量方法和物理启动的首次结果
IF 0.5
Ukrainian Journal of Physics Pub Date : 2023-05-11 DOI: 10.15407/ujpe68.3.147
A. Bykhun, P. Gladkikh, I. Karnaukhov, V. Lyashchenko, A. Mytsykov, V. Ridozub, V. Selivanov, V. Stomin, A. Tertychnyj, I. Ushakov, A. Zelinsky
{"title":"Reactivity Measurement Methods and the First Results of the Physical Start-up for the Nuclear Subcritical Facility “Neutron Source”","authors":"A. Bykhun, P. Gladkikh, I. Karnaukhov, V. Lyashchenko, A. Mytsykov, V. Ridozub, V. Selivanov, V. Stomin, A. Tertychnyj, I. Ushakov, A. Zelinsky","doi":"10.15407/ujpe68.3.147","DOIUrl":"https://doi.org/10.15407/ujpe68.3.147","url":null,"abstract":"The methods of the neutron-physical parameter measurements of the subcritical assembly neutron source driven with an electron linear accelerator during start-up are described in the article. The results of neutron multiplication factor and reactivity measurements by different methods are represented. The measurement results are compared with each other and with simulation results of MCNPX code. The measured results of the facility parameters are analyzed.","PeriodicalId":23400,"journal":{"name":"Ukrainian Journal of Physics","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43428848","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
Prospects to Use Amorphous Fe–Ni–Si–B Ribbons in Contactor Cores 非晶态Fe–Ni–Si–B带在接触器芯中的应用前景
IF 0.5
Ukrainian Journal of Physics Pub Date : 2023-05-11 DOI: 10.15407/ujpe68.3.201
N. Rafiyev, V. I. Ahmadov, A. Isayeva
{"title":"Prospects to Use Amorphous Fe–Ni–Si–B Ribbons in Contactor Cores","authors":"N. Rafiyev, V. I. Ahmadov, A. Isayeva","doi":"10.15407/ujpe68.3.201","DOIUrl":"https://doi.org/10.15407/ujpe68.3.201","url":null,"abstract":"We consider the possibility to use an amorphous Fe–Ni–Si–B material in the core of contactors, which are widely used in connecting and disconnecting electric circuits, instead of the crystalline material of 3% electric steel. Alloys containing Fe–Ni–Si–B have been treated with the use of mechanical, thermomechanical, and magnetic fields, and the material for practical applications has been obtained. The processing modes were chosen so that a change in the performance of ferromagnetic (below the Curie temperature) alloys during the annealing could be controlled. The obtained specimens were annealed in oil at 360 ∘C in a magnetic field of 200 A/m for 200 min. The temperature mode was chosen so that the stress relaxation could occur during the annealing, and the structural changes in the material could be observed.","PeriodicalId":23400,"journal":{"name":"Ukrainian Journal of Physics","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43848415","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
Звідна та незвідна частини водневого показника рН розбавлених водних розчинів хлориду натрію
IF 0.5
Ukrainian Journal of Physics Pub Date : 2023-05-11 DOI: 10.15407/ujpe68.3.177
L. Bulavin, N. Malomuzh, O. Khorolskyi
{"title":"Звідна та незвідна частини водневого показника рН розбавлених водних розчинів хлориду натрію","authors":"L. Bulavin, N. Malomuzh, O. Khorolskyi","doi":"10.15407/ujpe68.3.177","DOIUrl":"https://doi.org/10.15407/ujpe68.3.177","url":null,"abstract":"Основна увага в статтi придiляється означенню звiдної та незвiдної складових водневого показника рН та визначенню їх температурних i концентрацiйних залежностей у водно-сольових розчинах. Показано, що в розбавлених водних розчинах хлориду натрiю температурна залежнiсть звiдної складової рН має лiнiйний характер, що вiдрiзняється вiд аналогiчної залежностi у водi тiльки нахилом лiнiй температурної залежностi рН, який зростає зi зростанням концентрацiї солi. Незвiдна складова рН є немонотонною за температурою i приймає мiнiмальне значення за оптимальної температури життєдiяльностi людини i ссавцiв (36,6 ∘C). Встановлено iснування характерної концентрацiї солi, яка подiляє сiмейство температурних залежностей рН на двi пiдсистеми з рiзними характерами залежностi вiд температури.","PeriodicalId":23400,"journal":{"name":"Ukrainian Journal of Physics","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44550721","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
Decoherence in a PT -Symmetric Qubit PT对称量子位中的退相干
IF 0.5
Ukrainian Journal of Physics Pub Date : 2023-04-20 DOI: 10.15407/ujpe68.2.101
J. M. Bhat, M. Lone, S. Datta, G. Dar, A. Farouk
{"title":"Decoherence in a PT -Symmetric Qubit","authors":"J. M. Bhat, M. Lone, S. Datta, G. Dar, A. Farouk","doi":"10.15407/ujpe68.2.101","DOIUrl":"https://doi.org/10.15407/ujpe68.2.101","url":null,"abstract":"We investigate the decoherence in a PT -symmetric qubit coupled with a bosonic bath. Using canonical transformations, we map the non-Hermitian Hamiltonian representing the PT-symmetric qubit to a spin boson model. Identifying the parameter α that demarcates the hermiticity and non-hermiticity in the model, we show that the qubit does not decohere at the transition from the real eigen spectrum to a complex eigen spectrum. Using a general class of spectral densities, the strong suppression of the decoherence is observed due to both vacuum and thermal fluctuations of the bath, and the initial correlations hold, as we approach the transition point.","PeriodicalId":23400,"journal":{"name":"Ukrainian Journal of Physics","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41763619","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
Вплив температури та тиску на термодинамічний коефіцієнт (∂V/∂T)p води 温度和压力对水的热力学系数（V/T）p的影响
IF 0.5
Ukrainian Journal of Physics Pub Date : 2023-04-20 DOI: 10.15407/ujpe68.2.122
L. Bulavin, Ye.G. Rudnikov
{"title":"Вплив температури та тиску на термодинамічний коефіцієнт (∂V/∂T)p води","authors":"L. Bulavin, Ye.G. Rudnikov","doi":"10.15407/ujpe68.2.122","DOIUrl":"https://doi.org/10.15407/ujpe68.2.122","url":null,"abstract":"На основi лiтературних даних проведено розрахунки та аналiз температурних i баричних залежностей термодинамiчного коефiцiєнта (∂V/∂T)P для води у станi рiдини. Проведено порiвняння вказаного коефiцiєнта для води та аргону. З урахуванням принципу вiдповiдних станiв пiдтверджено iснування областi термодинамiчної подiбностi мiж водою та аргоном. При цьому iснує область, в якiй зазначена подiбнiсть мiж водою та аргоном не спостерiгається i наявна особлива поведiнка термодинамiчних властивостей води. Так, у води крива температурної залежностi (∂V/∂T)P уздовж лiнiї рiвноваги рiдина–пара має точку перегину за температури (91,0 ± 0,2)∘C, чого не спостерiгається в аргонi. Iснування для води точки перегину кривої (∂V/∂T)P приводить до вiд’ємних значень (∂V/∂T)P при температурах, нижчих 3,98∘C. Крiм того, наявнiсть точки перегину на вказанiй температурнiй залежностi приводить до перетину температурних залежностей сiмейства iзобар (∂V/∂T)P у водi при температурi (42, 0 ± 0, 2)∘C. На вiдмiну вiд цього, кривi температурної залежностi (∂V/∂T)P аргону уздовж лiнiї рiвноваги рiдина–пара не мають вiдповiдної точки перегину.","PeriodicalId":23400,"journal":{"name":"Ukrainian Journal of Physics","volume":"1 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67068724","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
Synthesis of Surface Structures during Laser-Stimulated Evaporation of a Copper Sulfate Solution in Distilled Water 蒸馏水中硫酸铜溶液激光蒸发过程中表面结构的合成
IF 0.5
Ukrainian Journal of Physics Pub Date : 2023-04-20 DOI: 10.15407/ujpe68.2.138
I. Bondar’, V. Suran, O. Y. Minya, O. Shuaibov, Yuriy Bilak, I. Shevera, A. Malinina, V. N. Krasilinets
{"title":"Synthesis of Surface Structures during Laser-Stimulated Evaporation of a Copper Sulfate Solution in Distilled Water","authors":"I. Bondar’, V. Suran, O. Y. Minya, O. Shuaibov, Yuriy Bilak, I. Shevera, A. Malinina, V. N. Krasilinets","doi":"10.15407/ujpe68.2.138","DOIUrl":"https://doi.org/10.15407/ujpe68.2.138","url":null,"abstract":"The methodology, technique, and results of studies of the formation of films on the glass surface during the irradiation of water solutions of copper sulfate with the laser radiation are presented. We used the nanosecond radiation of an yttrium-aluminum garnet laser with the generation wavelength λ = 1 .06 μm. The studies used solutions with different concentrations of copper sulfate. The structure of the films obtained in this case is compared with the structure of the films obtained as a result of drying the solutions without exposure to a laser radiation. The resulting films have both ordered and disordered structures. The characteristic dimensions of the structural elements of the films are 0.5–2 μm. The transmission of films in the 300–1200 nm spectral region is studied. In general, the resulting films are transparent in this area. Their transmission practically does not depend on the wavelength, but is different for different concentrations of the solution of copper sulfate.","PeriodicalId":23400,"journal":{"name":"Ukrainian Journal of Physics","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41977136","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
Потенціал модифікованого методу То¬маса–Фермі та його аналітичне представлення на прикладі взаємодії 16O та ізотопів 56,58,60,62,64Ni 改进的Thomas-Fermi方法的势及其分析表示——例如16O相互作用和同位素56，58，60，62，64Ni
IF 0.5
Ukrainian Journal of Physics Pub Date : 2023-04-20 DOI: 10.15407/ujpe68.2.73
V.A. Nesterov
{"title":"Потенціал модифікованого методу То¬маса–Фермі та його аналітичне представлення на прикладі взаємодії 16O та ізотопів 56,58,60,62,64Ni","authors":"V.A. Nesterov","doi":"10.15407/ujpe68.2.73","DOIUrl":"https://doi.org/10.15407/ujpe68.2.73","url":null,"abstract":"Густини розподiлу нуклонiв i потенцiали ядро-ядерної взаємодiї для ядра 16O та iзотопiв 56,58,60,62,64Ni було розра-ховано в рамках модифiкованого методу Томаса–Фермi, з урахуванням усiх доданкiв до членiв другого порядку по ħ у квазикласичному розкладi кiнетичної енергiї. В ролi нуклон-нуклонної взаємодiї використовувалися сили Скiрма, залежнi вiд густини нуклонiв. Для одержаного потенцiалу знайдено вдалу параметризацiю, що дозволяє представити його в аналiтичнiй формi.","PeriodicalId":23400,"journal":{"name":"Ukrainian Journal of Physics","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41444013","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
Dipole–Monopole Crossover and Chargeless Half-Mode in an Integrable Exciton–Phonon Nonlinear Dynamical System on a Regular One-Dimensional Lattice 正则一维晶格上可积激子-声子非线性动力系统的偶极子-单极子交叉和无电荷半模
IF 0.5
Ukrainian Journal of Physics Pub Date : 2023-04-20 DOI: 10.15407/ujpe68.2.108
O. O. Vakhnenko
{"title":"Dipole–Monopole Crossover and Chargeless Half-Mode in an Integrable Exciton–Phonon Nonlinear Dynamical System on a Regular One-Dimensional Lattice","authors":"O. O. Vakhnenko","doi":"10.15407/ujpe68.2.108","DOIUrl":"https://doi.org/10.15407/ujpe68.2.108","url":null,"abstract":"A new form of the integrable nonlinear exciton–phonon dynamical system characterized by two physically independent parameters is suggested. The system is settled along an infinite one-dimensional regular lattice, and it admits the semi-discrete Lax representation in terms of 3 × 3 auxiliary spectral and evolution matrices. The explicit analytic four-component solution to the system’s dynamical equations found by means of the Darboux–Backlund dressing technique turns out to be of broken PT-symmetry. Each component of the solution consists of two nonlinearly superposed traveling waves that inspires the dipole–monopole crossover for the equal values of two physically distinct spatial scaling parameters of the nonlinear wave packet. The phenomenon of the dipole–monopole alternative for the spatial distribution of pseudoexcitons is shown to initiate the partial splitting between the pseudoexcitonic and vibrational subsystems at the threshold point manifested by the complete elimination of one pseudoexcitonic component and the conversion of another pseudoexcitonic component into the pseudoexcitonic chargeless half-mode.","PeriodicalId":23400,"journal":{"name":"Ukrainian Journal of Physics","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44522665","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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