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Bulletin of the Russian Academy of Sciences: Physics最新文献

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Production and Decay of the Excited 8Be* Nucleus in Interaction of Fast Neutron and 10B Nucleus 快中子与10B核相互作用中受激8Be*核的产生与衰变
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2026-10-19 DOI: 10.1134/S1062873826701856
S. I. Potashev, A. A. Kasparov, S. Kh. Karaevsky, E. A. Permyakov, V. N. Ponomarev
{"title":"Production and Decay of the Excited 8Be* Nucleus in Interaction of Fast Neutron and 10B Nucleus","authors":"S. I. Potashev,&nbsp;A. A. Kasparov,&nbsp;S. Kh. Karaevsky,&nbsp;E. A. Permyakov,&nbsp;V. N. Ponomarev","doi":"10.1134/S1062873826701856","DOIUrl":"10.1134/S1062873826701856","url":null,"abstract":"<p>The reaction involving the production and decay of the <sup>8</sup>Be* nucleus is examined in the interaction of fast neutrons with an energy above 3 MeV with a <sup>10</sup>B nucleus. The study is conducted using a multidetector setup comprising a position-sensitive neutron detector and a pair spectrometer for electrons and positrons operated at the RADEX neutron channel at the Institute for Nuclear Research of the Russian Academy of Sciences (INR RAS). To this end, events with the emission of a secondary <sup>3</sup>H nucleus and a photon are identified along with rare events involving the emission of an <i>e</i><sup>+</sup><i>e</i><sup>–</sup> pair. An estimate is obtained for the contributions of transitions of various multipolarities from the excited state of the <sup>8</sup>Be nucleus to the ground state in the internal conversion of an electron–positron pair.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"90 10","pages":"1803 - 1808"},"PeriodicalIF":0.48,"publicationDate":"2026-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149219425","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
Use of the AX-Offset D90 Antenna for Studying Astrophysical Sources, Including the Sun, Applying Radio Interferometry Methods 应用射电干涉测量方法，利用AX-Offset D90天线研究包括太阳在内的天体物理源
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2026-10-19 DOI: 10.1134/S1062873826701935
I. V. Arkhangelskaja, A. V. Vinogradskaya, I. D. Zaripov, E. A. Rudakova, V. V. Minasyan, A. I. Arkhangelskiy, A. I. Madzhidov, E. N. Chasovikov, T. A. Kurmasheva, E. I. Plotnikova
{"title":"Use of the AX-Offset D90 Antenna for Studying Astrophysical Sources, Including the Sun, Applying Radio Interferometry Methods","authors":"I. V. Arkhangelskaja,&nbsp;A. V. Vinogradskaya,&nbsp;I. D. Zaripov,&nbsp;E. A. Rudakova,&nbsp;V. V. Minasyan,&nbsp;A. I. Arkhangelskiy,&nbsp;A. I. Madzhidov,&nbsp;E. N. Chasovikov,&nbsp;T. A. Kurmasheva,&nbsp;E. I. Plotnikova","doi":"10.1134/S1062873826701935","DOIUrl":"10.1134/S1062873826701935","url":null,"abstract":"<p>The use of AX-Offset D90 parabolic mesh offset antennas for studying astrophysical sources, including the Sun, employing the MIFIst radio interferometer, is discussed. The latter is a detector system based on antenna complexes with an unfilled aperture with a total size of ~ 450 m, which will provide an angular resolution of ~5.70 × 10<sup>−3</sup>°, ~2.60 × 10<sup>−2</sup>°, and ~0.12° at frequencies of 6.5000, 1.4204 (HI line), and 0.3000 GHz (<i>z</i> ~ 3.7 for the HI line).</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"90 10","pages":"1861 - 1869"},"PeriodicalIF":0.48,"publicationDate":"2026-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149219496","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
Model of the Antenna Module of the MEPhIst Radio Interferometer MEPhIst无线电干涉仪天线模块模型
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2026-10-19 DOI: 10.1134/S1062873826701960
A. V. Vinogradskaya, I. D. Zaripov, I. V. Arkhangelskaya, T. A. Kurmasheva, A. I. Arkhangelsky, E. A. Rudakova, E. I. Plotnikova, V. V. Minasyan, A. I. Majidov, E. N. Chasovikov
{"title":"Model of the Antenna Module of the MEPhIst Radio Interferometer","authors":"A. V. Vinogradskaya,&nbsp;I. D. Zaripov,&nbsp;I. V. Arkhangelskaya,&nbsp;T. A. Kurmasheva,&nbsp;A. I. Arkhangelsky,&nbsp;E. A. Rudakova,&nbsp;E. I. Plotnikova,&nbsp;V. V. Minasyan,&nbsp;A. I. Majidov,&nbsp;E. N. Chasovikov","doi":"10.1134/S1062873826701960","DOIUrl":"10.1134/S1062873826701960","url":null,"abstract":"<p>The creation process and key characteristics of the prototype of the main antenna module within the MIFIst radio interferometer were discussed. The AX-Offset D90 parabolic mesh offset antenna was selected as the module element. The setup is characterized by its mobility, compactness, reduced shadowing of the useful reflector area, and the use of available components, simplifying system assembly and scalability.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"90 10","pages":"1885 - 1888"},"PeriodicalIF":0.48,"publicationDate":"2026-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149219427","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
Baksan Large Neutrino Telescope: Project Development and Infrastructure Design 巴克桑大型中微子望远镜：项目开发和基础设施设计
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2026-10-19 DOI: 10.1134/S1062873826701893
A. D. Lukanov, A. A. Budzinskaya, E. P. Veretenkin, D. M. Voronin, V. N. Gavrin, D. S. Gursky, T. V. Ibragimova, B. K. Lubsandorzhiev, S. B. Lubsandorzhiev, D. A. Nanzanov, A. Yu. Sidorenkov, N. A. Ushakov, A. N. Fazliakhmetov, A. A. Shikhin
{"title":"Baksan Large Neutrino Telescope: Project Development and Infrastructure Design","authors":"A. D. Lukanov,&nbsp;A. A. Budzinskaya,&nbsp;E. P. Veretenkin,&nbsp;D. M. Voronin,&nbsp;V. N. Gavrin,&nbsp;D. S. Gursky,&nbsp;T. V. Ibragimova,&nbsp;B. K. Lubsandorzhiev,&nbsp;S. B. Lubsandorzhiev,&nbsp;D. A. Nanzanov,&nbsp;A. Yu. Sidorenkov,&nbsp;N. A. Ushakov,&nbsp;A. N. Fazliakhmetov,&nbsp;A. A. Shikhin","doi":"10.1134/S1062873826701893","DOIUrl":"10.1134/S1062873826701893","url":null,"abstract":"<p>The current status of the Baksan Large Neutrino Telescope project is presented in this work. The results of the first stage—a prototype with a target mass of 0.5 t—were described. The main improvements in the second prototype were also outlined: the magnetic field compensation system and the liquid scintillator purification system.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"90 10","pages":"1830 - 1835"},"PeriodicalIF":0.48,"publicationDate":"2026-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149219489","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
Self-Similarity Approach in Relativistic Physics 相对论物理中的自相似方法
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2026-10-19 DOI: 10.1134/S1062873826701947
E. G. Baldina
{"title":"Self-Similarity Approach in Relativistic Physics","authors":"E. G. Baldina","doi":"10.1134/S1062873826701947","DOIUrl":"10.1134/S1062873826701947","url":null,"abstract":"<p>The basic ideas of application of the self-similarity approach in relativistic physics are presented. The production of π-mesons in n + p and p + C reactions is described in terms of self-similar variables. The self-similarity approach provides adequate description of experimental data in the intermediate energy range, where the simplest special case of self-similarity—the scaling approach—is inapplicable. The application of the self-similarity approach to description of particle production and acceleration by ultrashort high-intensity laser pulses is demonstrated.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"90 10","pages":"1870 - 1878"},"PeriodicalIF":0.48,"publicationDate":"2026-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149219497","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
Calculation of the Angular Anisotropy of Gamma Quanta in Inelastic Neutron Scattering on 48Ti Nuclei 48Ti核非弹性中子散射中伽马量子角各向异性的计算
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2026-10-19 DOI: 10.1134/S1062873826701832
A. V. Andreev, P. G. Filonchik, T. Yu. Tretyakova, A. L. Barabanov, Yu. N. Kopatch, D. N. Grozdanov, N. A. Fedorov, P. S. Prusachenko, G. V. Pampushik, P. I. Kharlamov, V. R. Skoy, C. Hramco
{"title":"Calculation of the Angular Anisotropy of Gamma Quanta in Inelastic Neutron Scattering on 48Ti Nuclei","authors":"A. V. Andreev,&nbsp;P. G. Filonchik,&nbsp;T. Yu. Tretyakova,&nbsp;A. L. Barabanov,&nbsp;Yu. N. Kopatch,&nbsp;D. N. Grozdanov,&nbsp;N. A. Fedorov,&nbsp;P. S. Prusachenko,&nbsp;G. V. Pampushik,&nbsp;P. I. Kharlamov,&nbsp;V. R. Skoy,&nbsp;C. Hramco","doi":"10.1134/S1062873826701832","DOIUrl":"10.1134/S1062873826701832","url":null,"abstract":"<p>Inelastic neutron scattering by the <sup>48</sup>Ti nucleus with the formation of the 1st excited state of the target nucleus in the output channel, followed by the transition of the nucleus to the ground state by the emission of a gamma-ray quantum, is studied. For the incident neutron energies ranging from 1.2 to 2.3 MeV, the differential cross sections of both inelastic neutrons scattering and the γ radiation under consideration are calculated. The calculations made take into account both direct reactions and reactions occurring through the compound nucleus.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"90 10","pages":"1786 - 1794"},"PeriodicalIF":0.48,"publicationDate":"2026-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149219420","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
Structure of Odd–Odd Nuclei near the Doubly Magic 78Ni Nucleus 双幻78Ni核附近奇-奇核的结构
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2026-10-19 DOI: 10.1134/S1062873826702102
V. I. Isakov
{"title":"Structure of Odd–Odd Nuclei near the Doubly Magic 78Ni Nucleus","authors":"V. I. Isakov","doi":"10.1134/S1062873826702102","DOIUrl":"10.1134/S1062873826702102","url":null,"abstract":"<p>Odd–odd nuclei near the remote double-magic nucleus <span>(^{{78}}{text{Ni}})</span> are investigated within the random-phase approximation. Level energies and probabilities of electromagnetic transitions between levels of the corresponding nuclei are calculated. The results obtained are compared with the available sparse experimental data.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"90 10","pages":"1977 - 1983"},"PeriodicalIF":0.48,"publicationDate":"2026-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149219421","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
New Measurements of 71Ge Half-Life with a Si(Li) Detector 用Si（Li）探测器测量71Ge半衰期的新方法
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2026-10-19 DOI: 10.1134/S1062873826701996
A. V. Derbin, I. S. Drachnev, D. V. Ivanov, V. N. Muratova, M. V. Trushin, E. V. Unzhakov, A. S. Vorobyev
{"title":"New Measurements of 71Ge Half-Life with a Si(Li) Detector","authors":"A. V. Derbin,&nbsp;I. S. Drachnev,&nbsp;D. V. Ivanov,&nbsp;V. N. Muratova,&nbsp;M. V. Trushin,&nbsp;E. V. Unzhakov,&nbsp;A. S. Vorobyev","doi":"10.1134/S1062873826701996","DOIUrl":"10.1134/S1062873826701996","url":null,"abstract":"<p>The half-life <i>T</i><sub>1/2</sub> of <sup>71</sup>Ge nuclei was measured using a Si(Li) detector. The obtained value <i>T</i><sub>1/2</sub> = 11.473 ± 0.026 (stat.) days is consistent with recent results, which excludes the possibility of explaining the “gallium anomaly” by a longer half-life of <sup>71</sup>Ge.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"90 10","pages":"1903 - 1906"},"PeriodicalIF":0.48,"publicationDate":"2026-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149219422","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
Radiation Detection during Photoexcitation of Isomers at a Linear Electron Accelerator 直线电子加速器光激发异构体时的辐射探测
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2026-10-19 DOI: 10.1134/S1062873826701868
V. V. Mitsuk, V. N. Ponomarev, V. M. Skorkin
{"title":"Radiation Detection during Photoexcitation of Isomers at a Linear Electron Accelerator","authors":"V. V. Mitsuk,&nbsp;V. N. Ponomarev,&nbsp;V. M. Skorkin","doi":"10.1134/S1062873826701868","DOIUrl":"10.1134/S1062873826701868","url":null,"abstract":"<p>Detection of gamma radiation from photonuclear reactions to form radionuclides was investigated at the LUE-8-5 linear electron accelerator. The intensities of bremsstrahlung, scattered, and activation gamma radiation were measured in real time. Using the induced-activity method, the yields of excitation reactions of indium and cadmium isomers at photon energies up to 8 MeV were determined.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"90 10","pages":"1809 - 1813"},"PeriodicalIF":0.48,"publicationDate":"2026-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149219426","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
Study of the Influence of External Factors on Radon Concentration in the Air 外界因素对空气中氡浓度影响的研究
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2026-10-19 DOI: 10.1134/S1062873826701984
O. V. Chepurnova, V. I. Zherebchevsky, A. A. Marova, V. V. Petrov
{"title":"Study of the Influence of External Factors on Radon Concentration in the Air","authors":"O. V. Chepurnova,&nbsp;V. I. Zherebchevsky,&nbsp;A. A. Marova,&nbsp;V. V. Petrov","doi":"10.1134/S1062873826701984","DOIUrl":"10.1134/S1062873826701984","url":null,"abstract":"<p>A long-term monitoring of radon volumetric activity was carried out at the Laboratory of Nuclear Processes of the St. Petersburg State University. The dependences of radon volumetric activity on temperature, humidity, and pressure were determined. The analysis of the presented data made it possible to identify areas with the highest and lowest radon concentrations in the air and to assess the influence of external factors on the processes of radon formation and accumulation.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"90 10","pages":"1896 - 1902"},"PeriodicalIF":0.48,"publicationDate":"2026-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149219428","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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