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Seriya 3: Fizika, Astronomiya最新文献

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Influence of diffuseness of nuclear potential on the neutron halo structure of Zr isotopes near the neutron drip line 核势扩散度对中子滴线附近Zr同位素中子晕结构的影响
Seriya 3: Fizika, Astronomiya Pub Date : 2023-06-02 DOI: 10.55959/msu0579-9392.78.2310603
O. Bespalova, A. A. Klimochkina, M. M. Mosunov
{"title":"Influence of diffuseness of nuclear potential on the neutron halo structure of Zr isotopes near the neutron drip line","authors":"O. Bespalova, A. A. Klimochkina, M. M. Mosunov","doi":"10.55959/msu0579-9392.78.2310603","DOIUrl":"https://doi.org/10.55959/msu0579-9392.78.2310603","url":null,"abstract":"The single-particle characteristics of the halo structure ofZr isotopes near the neutron drip line were calculated\u0000within the dispersive optical model. The influence of the increase in the diffuseness of the nuclear Hartree–Fock\u0000type potential on the root-mean-square radii of halo states and their populations was considered. A significant\u0000difference was shown between the number of neutrons in halo states and in the r > 12 fm region, where there\u0000is no spatial correlation of neutrons with the core of nucleus.","PeriodicalId":399279,"journal":{"name":"Seriya 3: Fizika, Astronomiya","volume":"392 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131897553","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
Measurement of radon decays with the LVD-setup for neutrino searching 用lvd装置测量氡衰变的中微子搜索
Seriya 3: Fizika, Astronomiya Pub Date : 2023-06-02 DOI: 10.55959/msu0579-9392.78.2310202
N. Agafonova, E. Dobrynina, N. Filimonova
{"title":"Measurement of radon decays with the LVD-setup for neutrino searching","authors":"N. Agafonova, E. Dobrynina, N. Filimonova","doi":"10.55959/msu0579-9392.78.2310202","DOIUrl":"https://doi.org/10.55959/msu0579-9392.78.2310202","url":null,"abstract":"The LVD (Large Volume Detector), located at the Low Background Laboratory, Gran Sasso, Italy, is built to detect neutrinos from stellar core collapses in our Galaxy. The peculiarity of the search for rare events\u0000requires close attention to the background of the experiment, such as the natural radioactivity of the rock and\u0000detector materials and the interaction of cosmic ray muons underground. The LVD is capable of detecting\u0000gamma quanta from the decay of radon daughter nuclei. We convincingly show the connection between the\u0000change in the background counting rate from gammas in the detector and the change in the concentration of\u0000radon nuclei in the experimental hall. We also point out the existence of another source of radon change, this\u0000is seismic activity.","PeriodicalId":399279,"journal":{"name":"Seriya 3: Fizika, Astronomiya","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114531821","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
Compton desintegration of positronium 正电子的康普顿分解
Seriya 3: Fizika, Astronomiya Pub Date : 2023-06-02 DOI: 10.55959/msu0579-9392.78.2310404
I. S. Stepantsov, I. Volobuev, Y. Popov
{"title":"Compton desintegration of positronium","authors":"I. S. Stepantsov, I. Volobuev, Y. Popov","doi":"10.55959/msu0579-9392.78.2310404","DOIUrl":"https://doi.org/10.55959/msu0579-9392.78.2310404","url":null,"abstract":"We study the Compton disintegration of positronium in comparison with the same of hydrogen. The initial photon energy of a few keV allows one to apply the non-relativistic approach and use A2 approximation. Interesting features in the behavior of various differential cross sections are observed. In particular, the conditions were found, under which the electron and positron move parallel to each other with equal velocities. This leads to a number of specific Coulomb resonances","PeriodicalId":399279,"journal":{"name":"Seriya 3: Fizika, Astronomiya","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117126269","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
MEPhI’s option of lab scale Compton source MEPhI的实验室规模康普顿源选项
Seriya 3: Fizika, Astronomiya Pub Date : 2023-06-02 DOI: 10.55959/msu0579-9392.78.2310403
V. Dyubkov, S. Polozov, V. Rashchikov
{"title":"MEPhI’s option of lab scale Compton source","authors":"V. Dyubkov, S. Polozov, V. Rashchikov","doi":"10.55959/msu0579-9392.78.2310403","DOIUrl":"https://doi.org/10.55959/msu0579-9392.78.2310403","url":null,"abstract":"A development and construction of comparatively cheap and compact (several meters scale) X-ray sources is\u0000possible with the help of inverse Compton backscattering of laser photons on an electron bunch. Such sources\u0000can be used in the field of materials science (new materials, diagnostics of nanostructures at the atomic level),\u0000research of nano- and biosystems, medicine and pharmacology (new drugs R&D), physics and chemistry of\u0000fast-flowing processes (burning, explosion). It is suggested that compact storage synchrotron will operate with\u0000normal conducting S-band top-up linac. Linac will provides bunches with tunable energy in the range of 20–\u000060 MeV to generate the photon flux with tunable energy [1, 2]. The use of a storage ring provides the following\u0000advantages: comparatively high average intensity of the generated photon flux, high brightness, photon beam\u0000energy tuning in a wide range, high degree of monochromaticity and coherence of the generated photons. There\u0000are current results of the design of a compact storage ring for generating the photons in the energy range of\u00005-45 keV and investigations of the development of relativistic picosecond electron beam dynamics instabilities in\u0000the report.","PeriodicalId":399279,"journal":{"name":"Seriya 3: Fizika, Astronomiya","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125420253","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
Scattering and ion emission from insulator films 绝缘体膜的散射和离子发射
Seriya 3: Fizika, Astronomiya Pub Date : 2023-06-02 DOI: 10.55959/msu0579-9392.78.2320302
E. Zykova, A. Ieshkin, K. F. Minnebaev, K. E. Ozerova, N. G. Orlikovskaia, E. Rau, A. Tatarintsev
{"title":"Scattering and ion emission from insulator films","authors":"E. Zykova, A. Ieshkin, K. F. Minnebaev, K. E. Ozerova, N. G. Orlikovskaia, E. Rau, A. Tatarintsev","doi":"10.55959/msu0579-9392.78.2320302","DOIUrl":"https://doi.org/10.55959/msu0579-9392.78.2320302","url":null,"abstract":"To determine the effect of the surface potential of dielectric samples on the yield of positive ions during\u0000ion irradiation, we studied the dependence of the current of secondary particles on the thickness of dielectric\u0000films. It is shown that the yield of positive secondary particles increases significantly with increasing thickness\u0000if the film charging potential does not exceed the breakdown value determined by the electrical strength of\u0000the film. An indirect confirmation of the film charging in these experiments is the time dependence of the\u0000current from the sample holder. An experimental evaluation of the apparatus effect caused by the emission of\u0000secondary electrons from a hemispherical collector has been carried out. Possible mechanisms of the observed\u0000phenomena are discussed.","PeriodicalId":399279,"journal":{"name":"Seriya 3: Fizika, Astronomiya","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126490088","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
To testing of threshold silica aerogel Cherenkov detectors on cosmic rays 对宇宙射线的阈值二氧化硅气凝胶切伦科夫探测器的测试
Seriya 3: Fizika, Astronomiya Pub Date : 2023-06-02 DOI: 10.55959/msu0579-9392.78.2310102
A. Lapik, L.Z. Dzhilavyana, V. Lisin, A. Polonski, A. V. Rusakov
{"title":"To testing of threshold silica aerogel Cherenkov detectors on cosmic rays","authors":"A. Lapik, L.Z. Dzhilavyana, V. Lisin, A. Polonski, A. V. Rusakov","doi":"10.55959/msu0579-9392.78.2310102","DOIUrl":"https://doi.org/10.55959/msu0579-9392.78.2310102","url":null,"abstract":"A variant of testing threshold SiO2 aerogel Cherenkov detectors using cosmic radiation is described. The\u0000implementation requires a minimum amount of additional electronics and does not involve massive absorber\u0000layers (lead, etc.). The method makes it possible to accurately determine efficiency of detectors under study and\u0000to study operation of detectors in different energy ranges for relativistic particles.","PeriodicalId":399279,"journal":{"name":"Seriya 3: Fizika, Astronomiya","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127731196","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
Influence of «FLAT–TOP» of the resonant system of the DC-280 accelerator on the beam of charged particles DC-280加速器谐振系统“平顶”对带电粒子束的影响
Seriya 3: Fizika, Astronomiya Pub Date : 2023-06-02 DOI: 10.55959/msu0579-9392.78.2310502
P. I. Vinogradov, A.A. Protasovb, V. Semin, I. Kalagin, K. Verlamov, D. Yakovlev, V. Mironov
{"title":"Influence of «FLAT–TOP» of the resonant system of the DC-280 accelerator on the beam of charged particles","authors":"P. I. Vinogradov, A.A. Protasovb, V. Semin, I. Kalagin, K. Verlamov, D. Yakovlev, V. Mironov","doi":"10.55959/msu0579-9392.78.2310502","DOIUrl":"https://doi.org/10.55959/msu0579-9392.78.2310502","url":null,"abstract":"Experiments on the synthesis of superheavy elements (SHE) which were done at Flerov Laboratory of Nuclear\u0000Reactions (FLNR) measure that the probability of occurrence of one SHE event is ranged from one event per\u0000month to one event per week. Nowadays, Z = 118 (Oganesson) is the most used chemical element which is\u0000synthesized with 48Ca. The synthesis of new SHEs requires heavier bombarding particles: 50Ti, 54Cr, 58Fe, etc. In\u0000the experiments with heavier particles, the SHE isotope production cross section is expected to be lower than in\u0000the case of using 48Ca. It follows that it is necessary to increase the intensity of bombarding ion beams in order\u0000to collect experimental statistics in a reasonable time. Thus, for the synthesis of superheavy elements in the\u0000FLNR at the Joint Institute for Nuclear Research (JINR), the Factory of Superheavy Elements was created. The\u0000basic equipment of the SHE Factory is the DC-280 cyclotron complex. The accelerator provides high intensity of\u0000ion beams. As the intensity in the beam increases, the energy spread increases. That to minimize this process,\u0000the DC-280 cyclotron is equipped with an additional FLAT–TOP accelerating system.","PeriodicalId":399279,"journal":{"name":"Seriya 3: Fizika, Astronomiya","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128298663","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
Effect stability of lifetime of charged carrier in semiconductorsat a magnetic field 磁场对半导体中带电载流子寿命稳定性的影响
Seriya 3: Fizika, Astronomiya Pub Date : 2023-06-02 DOI: 10.55959/msu0579-9392.78.2320503
T. Muratov
{"title":"Effect stability of lifetime of charged carrier in semiconductors\u0000at a magnetic field","authors":"T. Muratov","doi":"10.55959/msu0579-9392.78.2320503","DOIUrl":"https://doi.org/10.55959/msu0579-9392.78.2320503","url":null,"abstract":"In work the conditions of regulation of increasing of carrier lifetime by recombination processes in\u0000semiconductors at low temperatures 1–10 K and classically «strong» magnetic fields 3 × 102\u0000–3 × 104 Gs\u0000are analyzed. The values of carrier concentrations 1010\u0000–1014) cm−3\u0000correspond to conditions of manifestation\u0000as cascade as resonant capture. It is indicated on necessarily to take into account of scattering of electrons on\u0000acoustic phonons along with electron-electron collisions, by it cascade capture on coulomb centers. As showed\u0000(on the basis of concrete estimates) namely scattering on acoustic phonons at cascade capture, stabilities of\u0000lifetime and controls of dynamics it increase in the presence of «strong» magnetic field.","PeriodicalId":399279,"journal":{"name":"Seriya 3: Fizika, Astronomiya","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121769864","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
Energy estimates for 2+1, 4+1, 6+1 states in heavy and superheavy nuclei 重核和超重核中2+ 1,4 + 1,6 +1态的能量估计
Seriya 3: Fizika, Astronomiya Pub Date : 2023-06-02 DOI: 10.55959/msu0579-9392.78.2310604
A. Efimov, I. Izosimov
{"title":"Energy estimates for 2+1, 4+1, 6+1 states in heavy and superheavy nuclei","authors":"A. Efimov, I. Izosimov","doi":"10.55959/msu0579-9392.78.2310604","DOIUrl":"https://doi.org/10.55959/msu0579-9392.78.2310604","url":null,"abstract":"Based on the available energy correlation deformation and the lowest excitation energy, estimates were obtained for the energy of the 2+1 – states. The considered systematics of the energy ratios in the rotational band also made it possible to obtain estimates for the 4+1 and 6+1 – states. A comparison with the results of other works was carried out.","PeriodicalId":399279,"journal":{"name":"Seriya 3: Fizika, Astronomiya","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133471835","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
Continuous-wave electron linacs for science and industry 用于科学和工业的连续波电子直线机
Seriya 3: Fizika, Astronomiya Pub Date : 2023-06-02 DOI: 10.55959/msu0579-9392.78.2310501
D. Yurov, V. Shvedunov, A. Alimov
{"title":"Continuous-wave electron linacs for science and industry","authors":"D. Yurov, V. Shvedunov, A. Alimov","doi":"10.55959/msu0579-9392.78.2310501","DOIUrl":"https://doi.org/10.55959/msu0579-9392.78.2310501","url":null,"abstract":"We present a brief overview of continuous-wave accelerators for both nuclear physics research and applied\u0000purposes, including superconducting accelerating systems. We also propose results of calculations for a new 1\u0000MeV 175 kW continuous-wave linac developing at SINP MSU.","PeriodicalId":399279,"journal":{"name":"Seriya 3: Fizika, Astronomiya","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132335258","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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