Physics of Particles and Nuclei Letters最新文献_第10页

A Cryogenic Gas-Filled Ion Stopping Cell as an Instrument for Experimental Study of Heaviest Nuclei 作为最重核实验研究仪器的低温充气止回离子池

IF 0.4

Physics of Particles and Nuclei Letters Pub Date : 2024-08-14 DOI: 10.1134/S154747712470078X

V. Yu. Vedeneev, A. M. Rodin, L. Krupa, A. M. Abakumov, E. V. Chernysheva, A. V. Guliaev, A. V. Guliaeva, P. Kohout, A. Kohoutova, A. B. Komarov, N. Yu. Kurkova, A. S. Novoselov, A. Opichal, A. V. Podshibyakin, V. S. Salamatin, S. A. Yukhimchuk

{"title":"A Cryogenic Gas-Filled Ion Stopping Cell as an Instrument for Experimental Study of Heaviest Nuclei","authors":"V. Yu. Vedeneev, A. M. Rodin, L. Krupa, A. M. Abakumov, E. V. Chernysheva, A. V. Guliaev, A. V. Guliaeva, P. Kohout, A. Kohoutova, A. B. Komarov, N. Yu. Kurkova, A. S. Novoselov, A. Opichal, A. V. Podshibyakin, V. S. Salamatin, S. A. Yukhimchuk","doi":"10.1134/S154747712470078X","DOIUrl":"10.1134/S154747712470078X","url":null,"abstract":"Mass measurement allows to determine the full binding energy of the nucleus—the integral characteristic of all atomic and nuclear forces which is the key for solving the fundamental physics problems, which includes nuclear physics, astrophysics, physics of fundamental interactions and symmetries, neutrino physics. High precision mass spectrometry could solve the problems of proton and neutron shells location in the nucleus (precision ΔM/M ~ 10–6), the study the nuclei deformation phenomena, searching of so-called “halo-nuclei”, the correct description of the heaviest elements formation during astrophysical r- and rp-processes of fast neutron and proton captures respectively (precision ΔM/M ~ 10–7). For this reason, a new facility for the high precision mass-spectrometry of heaviest nuclei is being built at the Flerov Laboratory of Nuclear Reactions, JINR, Dubna. It will include new target block, gas-filled separator for the reaction products, cryogenic gas-filled ion stopping cell (“Cryocell”), radio-frequency quadrupole transport system and the multi-reflection time-of-flight mass-spectrometer (MR-TOF-MS). This setup could provide mass measurements with the precision of about ΔM/M ~ 10–7. “Cryocell” is one of the most crucial component of it. This is a powerful instrument for the fundamental research due to its high conversion coefficient of the fluxes of reaction products with heavy ions at energies 5–10 MeV/nucleon into low energy secondary beam and low extraction time. It could open the possibility to perform mass analysis of short-lived isotopes with the lifetime of 100 ms and more.","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"21 4","pages":"611 - 614"},"PeriodicalIF":0.4,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142411690","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

Performances of the Reconstruction of the Primary Proton Vertices along the Beam Axis in the NA65(DsTau) Experiment NA65(DsTau) 实验中沿光束轴重建主质子顶点的性能

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Physics of Particles and Nuclei Letters Pub Date : 2024-08-14 DOI: 10.1134/S1547477124701085

M. M. Miloi

引用次数: 0

Differential Equations Method for Expansion of Hypergeometric Functions 超几何函数展开的微分方程法

IF 0.4

Physics of Particles and Nuclei Letters Pub Date : 2024-08-14 DOI: 10.1134/S1547477124700626

M. A. Bezuglov

{"title":"Differential Equations Method for Expansion of Hypergeometric Functions","authors":"M. A. Bezuglov","doi":"10.1134/S1547477124700626","DOIUrl":"10.1134/S1547477124700626","url":null,"abstract":"In quantum field theory an important role is played by various hypergeometric functions. Of particular interest is their close relationship with Feynman loop integrals. The latter are used to calculate higher corrections in perturbation theory to the measurable physical processes. Which becomes especially important now that the accuracy of measurements is increasing. There are many ways to solve Feynman loop integrals using hypergeometric functions. These solutions have the common property that the indices of the hypergeometric function linearly depends on a small parameter. And for practical calculations, it is necessary to obtain a Laurent expansion in this small parameter. In this case, it is desirable that the expansion elements be expressed in terms of well-defined functions that can be calculated with arbitrary precision. In this work we study the expansion of various hypergeometric functions in a Laurent series with respect to a small parameter in terms of multiple-polylogarithms. For this purpose, we mainly use the differential equation method and the Lee algorithm. Specifically, we will be interested in the generalized hypergeometric functions, the Appell and Lauricella functions. In these calculations, a particularly important role is played by the replacement of the variable: rational in one direction and irrational in the other. This issue is discussed with special attention.","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"21 4","pages":"574 - 576"},"PeriodicalIF":0.4,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142411709","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 DNA Damage in the Tumor Cell on Boron Neutron Capture Therapy 硼中子俘获疗法对肿瘤细胞 DNA 损伤的计算

IF 0.5

Physics of Particles and Nuclei Letters Pub Date : 2024-08-14 DOI: 10.1134/s1547477124701425

T. Togtokhtur, E. B. Dushanov, T. A. Kulahava, M. Batmunkh, A. N. Bugay

{"title":"Calculation of DNA Damage in the Tumor Cell on Boron Neutron Capture Therapy","authors":"T. Togtokhtur, E. B. Dushanov, T. A. Kulahava, M. Batmunkh, A. N. Bugay","doi":"10.1134/s1547477124701425","DOIUrl":"https://doi.org/10.1134/s1547477124701425","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>The boron neutron capture therapy technique has been appealing to advance the technical and medical development of aspects of malignant tumors. The concept of the method has been aimed at dose contribution by secondary particles for targeted tumor sites while neutron beams do not have enough radiation effects to damage healthy cells with an advantage. This study focused on calculating the dose deposition of secondary particles from nuclear reactions between various mono-energetic neutrons and 10B with different concentrations. In this simulation, we carried out the single-cell model of human glial tumors with several potential distributions of boron nanoparticles as L-BPA. The resulting absorbed boron dose was more significant than the dose from other particles on the lower part of epithermal neutron energy ranges when higher boron concentration. Accordingly, we estimated the DNA damage in the cell geometry with the sphere and ellipsoid caused by the secondary particles using the GEANT4-DNA toolkit, respectively. The findings highlight the importance of precise dose calculations of high LET particles and considering secondary particle effects when evaluating the efficacy of BNCT in tumor treatment.","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"11 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142176678","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

Cultivation of Halophilic Archaea Halobacterium salinarum 嗜卤古细菌 Halobacterium salinarum 的培养

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Physics of Particles and Nuclei Letters Pub Date : 2024-08-14 DOI: 10.1134/s1547477124701449

D. D. Kuklina, A. Yu. Shishkin, I. O. Bezruchko, S. V. Kalenov, I. S. Okhrimenko, E. A. Dronova, A. E. Mikhailov, Yu. L. Ryzhykau

引用次数: 0

PXI-Compatible Preamplifier and Amplifier for Proportional Gas Counters for Mössbauer Spectroscopy 与 PXI 兼容的莫斯鲍尔光谱比例气体计数器前置放大器和放大器

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Physics of Particles and Nuclei Letters Pub Date : 2024-08-14 DOI: 10.1134/S1547477124701176

P. Kohout, A. Kohoutová, L. Schlattauer, A. Opíchal, L. Kouřil, J. Pechoušek

{"title":"PXI-Compatible Preamplifier and Amplifier for Proportional Gas Counters for Mössbauer Spectroscopy","authors":"P. Kohout, A. Kohoutová, L. Schlattauer, A. Opíchal, L. Kouřil, J. Pechoušek","doi":"10.1134/S1547477124701176","DOIUrl":"10.1134/S1547477124701176","url":null,"abstract":"A PXI-compatible amplifier and preamplifier module for the 57Fe Mössbauer spectroscopy is presented in this paper. This PXI-compatible amplifier and preamplifier was developed for the purpose of utilization with proportional gas counters sensitive to the 14.4 keV low energy gamma rays as a part of PXI-based spectrometers developed at Palacký University Olomouc. The module is based on the Amptek A225 and A206 integrated circuits. This solution allows miniaturization of the spectrometric system, as the amplifier and the preamplifier are in a form of one PXI module, which is built in the compact PXI-chassis. There is also no need for an additional power supply, as the developed module is powered by the PXI connector included in the PXI chassis. This study deals with a comparison of the developed PXI-compatible amplifier and preamplifier board with the Amptek PC25 board in the stand-alone box (powered by a laboratory power supply), and with the ORTEC commercially available amplifier (572A) and preamplifier (142PC). The focus of this study is a comparison of those setups considering the false detections, lost detections, the multichannel analysis spectra, the Mössbauer spectrum quality, and the resonance effect of Mössbauer spectra.","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"21 4","pages":"719 - 722"},"PeriodicalIF":0.4,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142176841","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

Coherent Elastic Neutrino-Nucleus Scattering Search in the νGeN Experiment νGeN实验中的相干弹性中微核散射搜索

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Physics of Particles and Nuclei Letters Pub Date : 2024-08-14 DOI: 10.1134/S1547477124701048

D. V. Ponomarev, A. D. Bystryakov, A. M. Konovalov, A. V. Lubashevskiy

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Analysis of 1/Nc Corrections in the Quark Model for the Pion Transition Form Factor 分析夸克模型中的1/Nc校正的小离子转换形式因子

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Physics of Particles and Nuclei Letters Pub Date : 2024-08-14 DOI: 10.1134/S1547477124700596

N. A. Savkova, A. E. Radzhabov

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Analysis of the Cross Sections of the Formation of Nuclei in Isomeric States in (n, p) Reactions n, p）反应中异构态原子核形成的截面分析

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Physics of Particles and Nuclei Letters Pub Date : 2024-08-14 DOI: 10.1134/S1547477124700602

D. A. Sitkov, L. E. Trofimov, P. G. Filonchik, Yu. E. Titarenko, A. L. Barabanov

引用次数: 0

Study of the Possibility of Obtaining Neutron-Enriched Isotopes with the Magic Number N = 126 in the Multinucleon Transfer Reactions Induced by Radioactive Ion Beams 研究在放射性离子束诱导的多核子转移反应中获得神奇数字 N = 126 的中子富同位素的可能性

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Physics of Particles and Nuclei Letters Pub Date : 2024-08-14 DOI: 10.1134/S1547477124700699

V. Saiko, A. Karpov

引用次数: 0