发布求助
文献互助 智能选刊 最新文献

Physics of Particles and Nuclei Letters最新文献

筛选
英文 中文
Fragmentation of Cosmic Ray Nuclei and Its Experimental Study 宇宙射线原子核的碎裂及其实验研究
IF 0.5
Physics of Particles and Nuclei Letters Pub Date : 2023-08-08 DOI: 10.1134/S1547477123040453
A. Kurganov, O. Vasilev, D. Karmanov, I. Kovalev, A. Panov, D. Podorozhnyi, A. Slivin, E. Syresin, A. Turundaevskiy, G. Filatov, A. Shulga
{"title":"Fragmentation of Cosmic Ray Nuclei and Its Experimental Study","authors":"A. Kurganov,&nbsp;O. Vasilev,&nbsp;D. Karmanov,&nbsp;I. Kovalev,&nbsp;A. Panov,&nbsp;D. Podorozhnyi,&nbsp;A. Slivin,&nbsp;E. Syresin,&nbsp;A. Turundaevskiy,&nbsp;G. Filatov,&nbsp;A. Shulga","doi":"10.1134/S1547477123040453","DOIUrl":"10.1134/S1547477123040453","url":null,"abstract":"<p>The article discusses the importance of nuclear fragmentation processes for describing the propagation of cosmic rays, as well as for solving practically important problems of increasing the radiation resistance of spacecraft on-board electronics. There is a lack of experimental data on low-energy interactions of protons and nuclei. For the experimental study of fragmentation processes, it is proposed to carry out an experiment with heavy ion beams. Alongside the study of the radiation resistance of the electronic component base of spacecraft, it is proposed to measure the effective cross sections for the production of secondary isotopes during the interaction of cosmic ray protons with spacecraft materials and the electronic component base.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"20 4","pages":"637 - 649"},"PeriodicalIF":0.5,"publicationDate":"2023-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4331104","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
Development and Implementation of an Automation System for an Accelerator-Based Neutron Source for Neutron Capture Therapy 用于中子俘获治疗的基于加速器的中子源自动化系统的开发与实现
IF 0.5
Physics of Particles and Nuclei Letters Pub Date : 2023-08-08 DOI: 10.1134/S1547477123040404
A. M. Koshkarev, S. Yu. Taskaev
{"title":"Development and Implementation of an Automation System for an Accelerator-Based Neutron Source for Neutron Capture Therapy","authors":"A. M. Koshkarev,&nbsp;S. Yu. Taskaev","doi":"10.1134/S1547477123040404","DOIUrl":"10.1134/S1547477123040404","url":null,"abstract":"<p>This paper describes a method for automating the facility and a method for online data processing that allows an operator and analytical physicists to quickly process information during an experiment without the need for the manual postprocessing of data. The architecture of the automation system was proposed and software was developed for (1) an analysis of signals at the installation with the ability to filter according to user-defined conditions and the ability to display on real-time graphs and (2) displaying the values of various diagnostics with general real-time availability.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"20 4","pages":"809 - 813"},"PeriodicalIF":0.5,"publicationDate":"2023-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4331136","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
Motion Equation of Temperature Induced Plane Transversal Vibrations of a Rod: Numerical–Analytical Solution 温度诱导杆平面横向振动的运动方程:数值解析解
IF 0.5
Physics of Particles and Nuclei Letters Pub Date : 2023-08-08 DOI: 10.1134/S1547477123040660
A. E. Verhoglyadov
{"title":"Motion Equation of Temperature Induced Plane Transversal Vibrations of a Rod: Numerical–Analytical Solution","authors":"A. E. Verhoglyadov","doi":"10.1134/S1547477123040660","DOIUrl":"10.1134/S1547477123040660","url":null,"abstract":"<div><div><h3>\u0000 <b>Abstract</b>—</h3><p>In the process of designing the new NEPTUN pulsed reactor, the phenomenon of <i>dynamic bending</i> was discovered; it is a feature of the dynamics of pulsed reactors that does not appear in reactors of other types; however, it plays a significant role in evaluating the stability of reactor operation. Movements of fuel elements (fuel rods) under the influence of periodically changing temperature can lead to significant changes in the reactivity and fluctuations of the reactor power. To accurately simulate the operation of the reactor, it is necessary to know the shape of the fuel element at the time of the next power pulse. Since numerical methods for solving this dynamic problem of thermoelasticity require a computation time that is too large, an analytical method was applied. In this study, the first results of the numerical–analytical solution of the equation of induced oscillations of a fuel rod, as well as the prospects for using the method in studying the dynamics of the NEPTUN reactor, are presented.</p></div></div>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"20 4","pages":"656 - 663"},"PeriodicalIF":0.5,"publicationDate":"2023-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4328942","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
Design Features of Acceleration and Extraction Systems of Multicharged Ion Beams 多电荷离子束加速与提取系统的设计特点
IF 0.5
Physics of Particles and Nuclei Letters Pub Date : 2023-08-08 DOI: 10.1134/S1547477123040374
D. V. Kirtsev, A. A. Akimova, A. V. Galchuk, R. M. Klopenkov, V. G. Mudrolyubov, Yu. K. Osina
{"title":"Design Features of Acceleration and Extraction Systems of Multicharged Ion Beams","authors":"D. V. Kirtsev,&nbsp;A. A. Akimova,&nbsp;A. V. Galchuk,&nbsp;R. M. Klopenkov,&nbsp;V. G. Mudrolyubov,&nbsp;Yu. K. Osina","doi":"10.1134/S1547477123040374","DOIUrl":"10.1134/S1547477123040374","url":null,"abstract":"<p>The results of the development of a resonant accelerating system and devices for the output of a beam from a cyclotron of multicharged ions are presented. The resonant system is equipped with single-link panels that provide the operational regulation of the operating frequency in a range of 13–20 MHz. The beams are removed from the cyclotron using an electrostatic deflector and three magnetic channels.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"20 4","pages":"796 - 799"},"PeriodicalIF":0.5,"publicationDate":"2023-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4330851","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
Systematic Study of Gamma Decay Hindrance Factors 伽马衰减阻碍因子的系统研究
IF 0.5
Physics of Particles and Nuclei Letters Pub Date : 2023-08-08 DOI: 10.1134/S1547477123040635
Y. P. Singh, V. Kumar, A. Shukla, P. Jain, Y. Kumar, R. Sapra,  Rohtash, K. Jha, T. Verma, M. Silarski, S. Sharma
{"title":"Systematic Study of Gamma Decay Hindrance Factors","authors":"Y. P. Singh,&nbsp;V. Kumar,&nbsp;A. Shukla,&nbsp;P. Jain,&nbsp;Y. Kumar,&nbsp;R. Sapra,&nbsp; Rohtash,&nbsp;K. Jha,&nbsp;T. Verma,&nbsp;M. Silarski,&nbsp;S. Sharma","doi":"10.1134/S1547477123040635","DOIUrl":"10.1134/S1547477123040635","url":null,"abstract":"<p>In the present work, Weisskopf hindrance factor <span>({{F}_{{text{W}}}})</span> for electric and magnetic multipole transitions has been analyzed in the mass range <span>(20)</span> <span>( leqslant )</span>A <span>( leqslant )</span> <span>(250)</span>. An empirical correlation between the variation in <span>({{F}_{{text{W}}}})</span> as a function of multipolarity has been determined. The pattern of <span>({{F}_{{text{W}}}})</span> as a function of multipolarity and <span>({{F}_{nu }})</span> as a function of the degree of <span>(K)</span>-forbiddenness are found indirectly similar to the pattern of the conversion coefficient with multipolarity. The odd-even nucleon staggering effect on <span>({{F}_{{text{W}}}})</span> is discussed.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"20 4","pages":"577 - 582"},"PeriodicalIF":0.5,"publicationDate":"2023-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4330861","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
Relativistic One-Nucleon Exchange for the Proton-Deuteron Backward Scattering 质子-氘核反向散射的相对论单核子交换
IF 0.5
Physics of Particles and Nuclei Letters Pub Date : 2023-08-08 DOI: 10.1134/S154747712304012X
S. Bondarenko, S. Yurev
{"title":"Relativistic One-Nucleon Exchange for the Proton-Deuteron Backward Scattering","authors":"S. Bondarenko,&nbsp;S. Yurev","doi":"10.1134/S154747712304012X","DOIUrl":"10.1134/S154747712304012X","url":null,"abstract":"<p>The article is devoted to the relativistic study of elastic <span>(pd)</span> backward scattering based on the one-nucleon exchange diagram. Calculations are performed using relativistic deuteron wave functions obtained by solving the Bethe–Salpeter equation in the Minkowski space with relativistic separable potentials. The unpolarized differential cross section as well as some polarization observables of the reaction for initial proton momentum up to 7.3 GeV/<i>c</i> are calculated. The obtained results are compared with the calculations of other authors.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"20 4","pages":"598 - 604"},"PeriodicalIF":0.5,"publicationDate":"2023-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4330873","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
Background Suppression Criteria in a Fractal Analysis of Monte Carlo AuAu Events at (sqrt {{{s}_{{NN}}}} ) = 200 GeV (sqrt {{{s}_{{NN}}}} ) = 200gev蒙特卡罗AuAu事件分形分析中的背景抑制准则
IF 0.5
Physics of Particles and Nuclei Letters Pub Date : 2023-08-08 DOI: 10.1134/S1547477123040210
T. G. Dedovich, M. V. Tokarev
{"title":"Background Suppression Criteria in a Fractal Analysis of Monte Carlo AuAu Events at (sqrt {{{s}_{{NN}}}} ) = 200 GeV","authors":"T. G. Dedovich,&nbsp;M. V. Tokarev","doi":"10.1134/S1547477123040210","DOIUrl":"10.1134/S1547477123040210","url":null,"abstract":"<p>Monte Carlo (MC) <span>(AuAu)</span> events at an energy of <span>(sqrt {{{s}_{{NN}}}} )</span> = 200 GeV, obtained using the AMPT generator, MC fractals, and events with randomly distributed particles are analyzed by the <span>(SePaC)</span> method. The dependence of the portion <span>(Prtn)</span> of the events under study, defined as fractals, on the method parameter <span>({{P}_{{{text{Max}}}}})</span> is investigated. It has been established that the hypotheses of independent and dependent formation of fractals correspond to different regions of behavior of <span>(Prtn({{P}_{{{text{Max}}}}}))</span> for AMPT <span>(AuAu)</span> events. The <span>(SePaC)</span> method makes it possible to extract AMPT <span>(AuAu)</span> events with equal fractal dimensions <span>({{D}_{F}})</span> at different levels. The distribution of events by <span>({{D}_{F}})</span> are different for used hypotheses. Events identified by the hypothesis of independent devision have a group of leading particles according to <span>({{p}_{t}})</span><i>,</i> and the remaining ones exhibit exponential behavior of the <span>({{p}_{t}})</span> spectrum. The use of background suppression criteria describing the statistical characteristics of structures at different levels showed that a significant part of the events identified by the independent devision hypothesis have the same structures and can be interpreted as fractals. Events reconstructed by the dependent devision hypothesis are suppressed.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"20 4","pages":"675 - 682"},"PeriodicalIF":0.5,"publicationDate":"2023-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4331116","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
The Use of Thyristor Switches in the Power Supply of Nuclotron Booster Inflector Plates 晶闸管开关在中子增压器导波板电源中的应用
IF 0.5
Physics of Particles and Nuclei Letters Pub Date : 2023-08-08 DOI: 10.1134/S1547477123040477
N. I. Lebedev, A. S. Petuhov, A. A. Fateev
{"title":"The Use of Thyristor Switches in the Power Supply of Nuclotron Booster Inflector Plates","authors":"N. I. Lebedev,&nbsp;A. S. Petuhov,&nbsp;A. A. Fateev","doi":"10.1134/S1547477123040477","DOIUrl":"10.1134/S1547477123040477","url":null,"abstract":"<p>The variant of swapping the thyratron switch with a thyristor switch in the power supply of Nuclotron Booster inflector plates is considered. The results of measuring the switching time as a function of the operating voltage are presented. It is shown that the real switching time agrees with the requirements. The new scheme was tested on the Booster synchrotron of the NICA complex.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"20 4","pages":"763 - 766"},"PeriodicalIF":0.5,"publicationDate":"2023-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4331130","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
On a New Possibility of Pulsed Accumulation of Ultra Cold Neutrons in a Trap 超冷中子在阱中脉冲积累的新可能性
IF 0.5
Physics of Particles and Nuclei Letters Pub Date : 2023-08-08 DOI: 10.1134/S1547477123040295
A. I. Frank, G. V. Kulin, M. A. Zakharov
{"title":"On a New Possibility of Pulsed Accumulation of Ultra Cold Neutrons in a Trap","authors":"A. I. Frank,&nbsp;G. V. Kulin,&nbsp;M. A. Zakharov","doi":"10.1134/S1547477123040295","DOIUrl":"10.1134/S1547477123040295","url":null,"abstract":"<p>The concept of an ultracold neutron (UCN) source is considered based on the deceleration of very cold neutrons (VCNs) by a local decelerating device. The latter is proposed to be a gradient spin flipper. It is shown that, in this case, the flux of VCNs, which are converted to UCNs after deceleration, has a pulsed structure, and the duration of neutron bunches can be significantly shorter than their repetition period. Accordingly, the density of the neutron flux in the bunch significantly exceeds the average value. This opens up the possibility of the pulsed filling of the UCN trap without preliminary time focusing.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"20 4","pages":"664 - 667"},"PeriodicalIF":0.5,"publicationDate":"2023-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4331107","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
Injection System of the DC140 Cyclotron at the Flerov Laboratory of Nuclear Reactions Flerov核反应实验室DC140回旋加速器的注入系统
IF 0.5
Physics of Particles and Nuclei Letters Pub Date : 2023-08-08 DOI: 10.1134/S1547477123040350
N. Yu. Kazarinov, V. I. Lisov, V. V. Bekhterev, S. L. Bogomolov, G. G. Gulbekyan, A. S. Zabanov, I. A. Ivanenko, I. V. Kalagin, S. V. Mitrofanov, N. F. Osipov, V. A. Semin
{"title":"Injection System of the DC140 Cyclotron at the Flerov Laboratory of Nuclear Reactions","authors":"N. Yu. Kazarinov,&nbsp;V. I. Lisov,&nbsp;V. V. Bekhterev,&nbsp;S. L. Bogomolov,&nbsp;G. G. Gulbekyan,&nbsp;A. S. Zabanov,&nbsp;I. A. Ivanenko,&nbsp;I. V. Kalagin,&nbsp;S. V. Mitrofanov,&nbsp;N. F. Osipov,&nbsp;V. A. Semin","doi":"10.1134/S1547477123040350","DOIUrl":"10.1134/S1547477123040350","url":null,"abstract":"<p>The Flerov Laboratory of Nuclear Reactions at the Joint Institute for Nuclear Research is continuing works on a new multipurpose applied science facility based on the DC140 cyclotron. The axial injection systems of DC140 cyclotron are a reconstruction of the DC72 cyclotron ones. The overview of the elements of the axial injection system is presented in this report.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"20 4","pages":"791 - 795"},"PeriodicalIF":0.5,"publicationDate":"2023-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4331489","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
首页 上一页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信