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Physics of Atomic Nuclei最新文献

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Diagnostics of the Structure of a Nuclear Power Plant Unit Using Muonography 核电机组结构的超声诊断
IF 0.4 4区 物理与天体物理
Physics of Atomic Nuclei Pub Date : 2025-07-11 DOI: 10.1134/S1063778825700243
N. A. Pasyuk, R. R. Alyev, N. N. Davidenko, S. M. Kiselev, A. S. Kozhin, K. G. Kompaniets, Yu. N. Konev, S. V. Oleinik, A. A. Petrukhin, R. M. Fakhrutdinov, M. Yu. Tselinenko, V. V. Shutenko, I. I. Yashin
{"title":"Diagnostics of the Structure of a Nuclear Power Plant Unit Using Muonography","authors":"N. A. Pasyuk,&nbsp;R. R. Alyev,&nbsp;N. N. Davidenko,&nbsp;S. M. Kiselev,&nbsp;A. S. Kozhin,&nbsp;K. G. Kompaniets,&nbsp;Yu. N. Konev,&nbsp;S. V. Oleinik,&nbsp;A. A. Petrukhin,&nbsp;R. M. Fakhrutdinov,&nbsp;M. Yu. Tselinenko,&nbsp;V. V. Shutenko,&nbsp;I. I. Yashin","doi":"10.1134/S1063778825700243","DOIUrl":"10.1134/S1063778825700243","url":null,"abstract":"<p>In 2022, a hybrid muon hodoscope with a sensitive area of <span>(3times 3)</span> m<span>({}^{2})</span> for studying the internal structure of large-scale objects using the muonography method was created at MEPhI. The hodoscope’s detecting system has a hybrid structure. It consists of a scintillation strip detector and a drift tube detector and is designed to record tracks of charged particles. The muonography method is based on the use of cosmic ray muons as penetrating radiation for ‘‘translucence’’ (analogous to radiography) of large-scale objects. Experimental studies of the internal structure of the Kalinin NPP power unit using the muonography method were carried out in 2022–2023. The paper presents a brief description of the design of a hybrid muon hodoscope, as well as the results of an experiment on diagnostics of the power unit structure using this method, which was carried out during the scheduled power unit’s maintenance. The purpose of the experiment was to develop a method for real-time detection of changes in the structure of a reactor unit during its maintenance.</p>","PeriodicalId":728,"journal":{"name":"Physics of Atomic Nuclei","volume":"88 2","pages":"179 - 193"},"PeriodicalIF":0.4,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164792","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
Quartet-Metric Gravity and Scalar Graviton Dark Holes 四尺度引力和标量引力子黑洞
IF 0.4 4区 物理与天体物理
Physics of Atomic Nuclei Pub Date : 2025-07-11 DOI: 10.1134/S1063778825700255
Yu. F. Pirogov, O. V. Zenin
{"title":"Quartet-Metric Gravity and Scalar Graviton Dark Holes","authors":"Yu. F. Pirogov,&nbsp;O. V. Zenin","doi":"10.1134/S1063778825700255","DOIUrl":"10.1134/S1063778825700255","url":null,"abstract":"<p>In the framework of the modified general relativity theory—the so called quartet-metric gravity/spontaneously broken relativity, objects to be called ‘‘dark holes’’ merging central black holes and peripheral scalar graviton dark haloes are considered. It is shown that the dark holes may naturally explain the effect of asymptotically flat rotation curves, attributed generally to the presence of some more conventional dark matter. Prospects of further modification of the discussed basic dark holes, to convert them to more realistic ones for application in astrophysics and cosmology, are outlined.</p>","PeriodicalId":728,"journal":{"name":"Physics of Atomic Nuclei","volume":"88 2","pages":"356 - 361"},"PeriodicalIF":0.4,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164795","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 Wave Length Shifters for SPD BBC Scintillation Tiles Readout SPD BBC闪烁片读出波长移位器的研究
IF 0.4 4区 物理与天体物理
Physics of Atomic Nuclei Pub Date : 2025-07-11 DOI: 10.1134/S1063778825700383
F. A. Dubinin, A. I. Durov, A. Yu. Isupov, V. P. Ladygin, A. A. Levkov, G. A. Nigmatkulov, S. G. Reznikov, P. E. Teterin, A. V. Tishevsky, I. S. Volkov, A. M. Zakharov, A. O. Zhurkina
{"title":"Study of Wave Length Shifters for SPD BBC Scintillation Tiles Readout","authors":"F. A. Dubinin,&nbsp;A. I. Durov,&nbsp;A. Yu. Isupov,&nbsp;V. P. Ladygin,&nbsp;A. A. Levkov,&nbsp;G. A. Nigmatkulov,&nbsp;S. G. Reznikov,&nbsp;P. E. Teterin,&nbsp;A. V. Tishevsky,&nbsp;I. S. Volkov,&nbsp;A. M. Zakharov,&nbsp;A. O. Zhurkina","doi":"10.1134/S1063778825700383","DOIUrl":"10.1134/S1063778825700383","url":null,"abstract":"<p>Tile scintillators are the widely used technology in HEP experiments. The technology implies wavelength shifters (WLS) to collect light from a tile and guide it toward a photomultiplier and provides homogeneous readout from tiles with low dependence on tile shape and size. For this purpose, WLSs must provide appropriate light transportation along with good light trapping efficiency and time performance. Here we present results of comparative study of light collection and losses for two WLSs: Kurarai Y-11 and Saint Gobain BCF-92.</p>","PeriodicalId":728,"journal":{"name":"Physics of Atomic Nuclei","volume":"88 2","pages":"312 - 316"},"PeriodicalIF":0.4,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164840","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
Properties of the Remote Even–Even Nuclei Close to ({}^{{78}})Ni 接近({}^{{78}}) Ni的远偶偶核的性质
IF 0.4 4区 物理与天体物理
Physics of Atomic Nuclei Pub Date : 2025-07-11 DOI: 10.1134/S1063778825700206
V. I. Isakov
{"title":"Properties of the Remote Even–Even Nuclei Close to ({}^{{78}})Ni","authors":"V. I. Isakov","doi":"10.1134/S1063778825700206","DOIUrl":"10.1134/S1063778825700206","url":null,"abstract":"<p>In this paper, in the framework of the random phase approximation, we investigate the properties of even–even nuclei in the vicinity of the remote doubly magic nucleus <span>({}^{78})</span>Ni. The energies of the levels and probabilities of electromagnetic transitions in the considered nuclei are calculated. A comparison of the results with the currently available few experimental data is carried out.</p>","PeriodicalId":728,"journal":{"name":"Physics of Atomic Nuclei","volume":"88 2","pages":"205 - 209"},"PeriodicalIF":0.4,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164724","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
The Study of the Time Resolution of the 3D Neutrino Detector SuperFGD 三维中微子探测器supergd的时间分辨率研究
IF 0.4 4区 物理与天体物理
Physics of Atomic Nuclei Pub Date : 2025-07-11 DOI: 10.1134/S1063778825700279
M. Kolupanova, A. Mefodev
{"title":"The Study of the Time Resolution of the 3D Neutrino Detector SuperFGD","authors":"M. Kolupanova,&nbsp;A. Mefodev","doi":"10.1134/S1063778825700279","DOIUrl":"10.1134/S1063778825700279","url":null,"abstract":"<p>Time resolution is important parameter of the detector. High time resolution is necessary for particle identification and the accuracy of the event reconstruction at short time and space intervals as it allows for measuring neutron cross-sections in muon antineutrino interactions within the detector. It is critical for restoring the complete kinematics of the interaction, improving the reconstruction of neutrino energy, and consequently reducing systematic uncertainties in oscillation analysis. This research presents the results of time resolution measurements made with the SuperFGD detector which was developed as an active target of the upgraded detector ND280 complex of the T2K experiment. Straight cosmic tracks passing entirely through the active region of the detector were selected for time calibration. The developed algorithm calculates time delays associated with cable length, the distance from the MPPC and time-walk effect. Preliminary result of the time resolution measured using the time distribution of hits in the track from both upstream and side fibers with respect to the average time of each event is <span>(sigma=1.12)</span> ns for a threshold of 40 photoelectrons.</p>","PeriodicalId":728,"journal":{"name":"Physics of Atomic Nuclei","volume":"88 2","pages":"269 - 274"},"PeriodicalIF":0.4,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164837","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
Production of Leptonic Bound States in Electron–Positron Annihilation 电子-正电子湮灭中轻子束缚态的产生
IF 0.4 4区 物理与天体物理
Physics of Atomic Nuclei Pub Date : 2025-07-11 DOI: 10.1134/S1063778825700413
F. A. Martynenko, A. P. Martynenko, A. V. Eskin
{"title":"Production of Leptonic Bound States in Electron–Positron Annihilation","authors":"F. A. Martynenko,&nbsp;A. P. Martynenko,&nbsp;A. V. Eskin","doi":"10.1134/S1063778825700413","DOIUrl":"10.1134/S1063778825700413","url":null,"abstract":"<p>We study the production of single dimuonium and ditauonium in electron–positron annihilation in quantum electrodynamics. Two mechanisms of one- and two-photon electron–positron annihilation are taken into account when calculating the amplitudes and cross-sections of leptonia production. We take into account relativistic corrections in the production amplitude connected with the relative momenta of leptons and with the transformation law of the bound state wave function from the rest frame to the moving reference frame.</p>","PeriodicalId":728,"journal":{"name":"Physics of Atomic Nuclei","volume":"88 2","pages":"342 - 348"},"PeriodicalIF":0.4,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145163957","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
Supernova Neutrino Distribution: Correlation of Fit Parameters with Hydrodynamic Spatial Scales 超新星中微子分布：拟合参数与流体动力空间尺度的相关性
IF 0.4 4区 物理与天体物理
Physics of Atomic Nuclei Pub Date : 2025-07-11 DOI: 10.1134/S1063778825700371
A. A. Dobrynina, E. A. Koptyaeva, I. S. Ognev
{"title":"Supernova Neutrino Distribution: Correlation of Fit Parameters with Hydrodynamic Spatial Scales","authors":"A. A. Dobrynina,&nbsp;E. A. Koptyaeva,&nbsp;I. S. Ognev","doi":"10.1134/S1063778825700371","DOIUrl":"10.1134/S1063778825700371","url":null,"abstract":"<p>Based on the results of one-dimensional simulation of a supernova explosion, the internal structure of the core-collapse supernova is investigated. The spatial supernova scales are obtained as function of time after a bounce for seven supernova models. It is shown that transition radius between the baryon-dominated and the radiation-dominated regime cannot be found for some time interval at simple limiting cases. Correlations between the spatial supernova scales and parameters, which determinate the width of the angular and spectral distribution of the neutrino in the outer part of the supernova, are studied. The angular parameter correlates with the neutrinosphere radius of the electron neutrino. The width of the spectral distribution is proportional to the inverse radius of protoneutron star.</p>","PeriodicalId":728,"journal":{"name":"Physics of Atomic Nuclei","volume":"88 2","pages":"249 - 253"},"PeriodicalIF":0.4,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164039","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
Status of the ALICE Fast Interaction Trigger in RUN 3 RUN 3中ALICE快速交互触发器的状态
IF 0.4 4区 物理与天体物理
Physics of Atomic Nuclei Pub Date : 2025-07-11 DOI: 10.1134/S1063778825700310
M. Sukhanov, A. Furs, D. Finogeev, T. Karavicheva, D. Serebryakov, N. Vozniuk, ALICE collaboration
{"title":"Status of the ALICE Fast Interaction Trigger in RUN 3","authors":"M. Sukhanov,&nbsp;A. Furs,&nbsp;D. Finogeev,&nbsp;T. Karavicheva,&nbsp;D. Serebryakov,&nbsp;N. Vozniuk,&nbsp;ALICE collaboration","doi":"10.1134/S1063778825700310","DOIUrl":"10.1134/S1063778825700310","url":null,"abstract":"<p>The Fast Interaction Trigger (FIT)—a hybrid system of three ALICE forward detectors—has participated in each data-taking session since the beginning of LHC Run 3 in July 2022. FIT is essential for ALICE operation and provides the fastest online trigger, measures precision collision time, charged-particle multiplicity and centrality, and determines the online vertex position. It also serves as the primary online luminometer used by the LHC for beam levelling at ALICE.</p>","PeriodicalId":728,"journal":{"name":"Physics of Atomic Nuclei","volume":"88 2","pages":"306 - 311"},"PeriodicalIF":0.4,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164722","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
Optimization of the Composition of Nd-Containing Scintillator to Increase Its Light Yield and Stability 优化含nd闪烁体的组成以提高其产光率和稳定性
IF 0.4 4区 物理与天体物理
Physics of Atomic Nuclei Pub Date : 2025-07-11 DOI: 10.1134/S1063778825700358
A. V. Veresnikova, Z. Yu. Isupova, B. V. Lokshin, V. P. Morgalyuk, A. M. Nemeryuk, G. Ya. Novikova, S. A. Elcheparova, E. A. Yanovich
{"title":"Optimization of the Composition of Nd-Containing Scintillator to Increase Its Light Yield and Stability","authors":"A. V. Veresnikova,&nbsp;Z. Yu. Isupova,&nbsp;B. V. Lokshin,&nbsp;V. P. Morgalyuk,&nbsp;A. M. Nemeryuk,&nbsp;G. Ya. Novikova,&nbsp;S. A. Elcheparova,&nbsp;E. A. Yanovich","doi":"10.1134/S1063778825700358","DOIUrl":"10.1134/S1063778825700358","url":null,"abstract":"<p>Based on Nd(III) 3,5,5-trimethylhexanoate and an additional solvent TBP, the composition of a liquid organic scintillator for the determination of double neutrinoless <span>(beta)</span> decay was developed in LAB. IR spectroscopy has shown that TBP forms additional coordination bonds with neodymium carboxylate and thereby prevents its hydrolysis and polymerization. It has been shown that the optimal method for studying the purity and stability of a scintillator is UV spectrophotometry. The light yield of the scintillator composition [LAB <span>(+)</span> BPO (3 g/L) <span>(+)</span> TBP (6.3<span>(%)</span>) <span>(+)</span> Nd (<span>(5.9pm 0.2)</span> g/L)] is 78<span>(%)</span> relative to the scintillator [LAB <span>(+)</span> BPO (3 g/L)].</p>","PeriodicalId":728,"journal":{"name":"Physics of Atomic Nuclei","volume":"88 2","pages":"194 - 204"},"PeriodicalIF":0.4,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164793","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
Evaluation of the Influence of the Beam Pipe on the Accuracy of Solving the Problem of Determining the Coordinates of Au–Au Interactions 束管对确定Au-Au相互作用坐标精度影响的评价
IF 0.4 4区 物理与天体物理
Physics of Atomic Nuclei Pub Date : 2025-07-11 DOI: 10.1134/S1063778825700334
M. A. Zharov, K. V. Razmyslov, F. F. Valiev, V. V. Monakhov
{"title":"Evaluation of the Influence of the Beam Pipe on the Accuracy of Solving the Problem of Determining the Coordinates of Au–Au Interactions","authors":"M. A. Zharov,&nbsp;K. V. Razmyslov,&nbsp;F. F. Valiev,&nbsp;V. V. Monakhov","doi":"10.1134/S1063778825700334","DOIUrl":"10.1134/S1063778825700334","url":null,"abstract":"<p>The problem of determining the coordinates of Au–Au interactions at a center-of-mass energy of 7 GeV and the influence of different ion beam pipe configurations on the results are considered. The modeling was performed using the UrQMD 3.4 event generator, Geant4, and a neural network model. Eight configurations were studied: ion beam pipes with wall thicknesses of 1.2, 3, 5, and 8 mm, with the wall material being carbon and iron. The use of beam pipe with walls with thicknesses of 1–3 mm does not significantly affect the outcome, but further increasing the wall thickness significantly reduces accuracy.</p>","PeriodicalId":728,"journal":{"name":"Physics of Atomic Nuclei","volume":"88 2","pages":"302 - 305"},"PeriodicalIF":0.4,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164839","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
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