Physics of Particles and Nuclei Letters最新文献

{"title":"Exploring the Role of Nuclear Structure Effects in Photofission Mechanism of 237Np","authors":"M. Sepiani,&nbsp;M. N. Nasrabadi","doi":"10.1134/S1547477124702200","DOIUrl":"10.1134/S1547477124702200","url":null,"abstract":"<p>The photofission which is very important for various nuclear applications involves the excitation and subsequent fission of a nucleus by photon absorption. This study explores the complexities of ²³⁷Np photofission, highlighting the critical roles of nuclear level density at saddle points and fission barrier parameters. Using advanced theoretical models and nuclear reaction codes, the research investigates the interplay between these factors and the photofission cross sections of ²³⁷Np. Theoretical results are compared with experimental data to deepen our understanding of photofission dynamics.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"22 2","pages":"255 - 259"},"PeriodicalIF":0.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944346","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}

{"title":"The SFiNx Detector System (Current Status)","authors":"A. V. Isaev,&nbsp;R. S. Mukhin,&nbsp;A. V. Andreev,&nbsp;M. L. Chelnokov,&nbsp;V. I. Chepigin,&nbsp;H. M. Devaraja,&nbsp;I. N. Izosimov,&nbsp;D. E. Katrasev,&nbsp;A. A. Kuznetsova,&nbsp;O. N. Malyshev,&nbsp;A. G. Popeko,&nbsp;Yu. A. Popov,&nbsp;A. Rahmatinejad,&nbsp;B. Sailaubekov,&nbsp;T. M. Shneidman,&nbsp;E. A. Sokol,&nbsp;A. I. Svirikhin,&nbsp;M. S. Tezekbayeva,&nbsp;A. V. Yeremin","doi":"10.1134/S1547477124702303","DOIUrl":"10.1134/S1547477124702303","url":null,"abstract":"<p>A new detector system SFiNx for on-line investigation of the SF properties of short-lived heavy nuclei synthesized in complete fusion reactions was created in Flerov Laboratory of Nuclear Reactions. As a result of an experimental series on SHELS separator, the prompt neutrons yield data from spontaneous fission obtained for heavy nuclei with <i>Z</i> = 100–106.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"22 2","pages":"300 - 303"},"PeriodicalIF":0.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944139","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}

{"title":"Erratum to: Extraction Time Simulations of a Cryogenic Gas Stopping Cell Designed to Study the Properties of Superheavy Elements","authors":"A. Kohoutova,&nbsp;A. M. Rodin,&nbsp;A. V. Gulyaev,&nbsp;A. V. Gulyaeva,&nbsp;V. Yu. Vedeneev,&nbsp;A. M. Abakumov,&nbsp;J. Kliman,&nbsp;A. B. Komarov,&nbsp;P. Kohout,&nbsp;L. Krupa,&nbsp;N. Yu. Kurkova,&nbsp;A. Maher,&nbsp;A. S. Novoselov,&nbsp;A. Opichal,&nbsp;J. Pechousek,&nbsp;A. V. Podshibyakin,&nbsp;V. S. Salamatin,&nbsp;S. V. Stepantsov,&nbsp;E. V. Chernysheva,&nbsp;S. A. Yukhimchuk","doi":"10.1134/S1547477125020025","DOIUrl":"10.1134/S1547477125020025","url":null,"abstract":"","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"22 2","pages":"487 - 487"},"PeriodicalIF":0.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944285","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}

{"title":"Fundamental Information from Combined Analysis of Nuclear Data and Particle Masses","authors":"S. I. Sukhoruchkin,&nbsp;Z. N. Soroko","doi":"10.1134/S1547477124702212","DOIUrl":"10.1134/S1547477124702212","url":null,"abstract":"<p>The unexpected manifestation of the Standard Model parameters simultaneously in the prominent maxima in spacing distributions of nuclear states energies and stable intervals in total distribution of particle mass differences allow us to make a conclusion about the universal character of the relations between these SM parameters.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"22 2","pages":"260 - 263"},"PeriodicalIF":0.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944314","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}

{"title":"Investigation of Low-Energy p-Wave Resonances in 93Nb (n, γ) Reaction at the IREN Facility, JINR","authors":"A. M. Yergashov,&nbsp;S. B. Borzakov,&nbsp;C. Hramco,&nbsp;Yu. N. Kopatch,&nbsp;V. L. Kuznetsov,&nbsp;S. T. Mazhen,&nbsp;L. V. Mitsyna,&nbsp;A. I. Oprea,&nbsp;C. Oprea,&nbsp;N. V. Rebrova,&nbsp;P. V. Sedyshev,&nbsp;N.V. Simbirtseva","doi":"10.1134/S1547477124702273","DOIUrl":"10.1134/S1547477124702273","url":null,"abstract":"<p>There are very few experimental works on the measurement of angular distributions in the (<i>n</i>, γ) reaction near low-lying <i>p</i>-wave resonances of nuclei. Experiments on the determination of the partial neutron widths on ¹¹³Cd and ¹¹⁷Sn nuclei were carried out at Frank Laboratory of Neutron Physics, JINR Dubna in the 1990s. In the capture process of resonant neutrons angular distributions and contribution of <i>p</i>-wave amplitudes into interference were analyzed. Our work presents the results of the study of low-lying p-wave resonances in the (n, γ) reaction on ⁹³Nb nucleus, obtained at the pulsed neutron source IREN from FLNP.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"22 2","pages":"284 - 288"},"PeriodicalIF":0.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944317","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}

{"title":"Anomalous Events in the TUS Orbital Detector Data","authors":"M. V. Lavrova,&nbsp;A. V. Blinov,&nbsp;G. K. Garipov,&nbsp;A. A. Grinyuk,&nbsp;Kh. Karatash,&nbsp;P. A. Klimov,&nbsp;Il. H. Park,&nbsp;O. A. Saprykin,&nbsp;L. G. Tkachev,&nbsp;Ye. Sholtan,&nbsp;I. V. Yashin","doi":"10.1134/S1547477124702492","DOIUrl":"10.1134/S1547477124702492","url":null,"abstract":"<p>The main goal of the TUS experiment was to search for and study ultra high-energy cosmic rays with energies <i>E</i> &gt; 70 EeV. The TUS detector registered a number of unusual events, the origin of which is unclear. Events that are unique and not similar to EAS are the subject of the study presented in this paper. Events such as gamma-ray bursts (GRBs), out-of-aperture upward going EASs accompanied by lightning flashes, as well as terrestrial gamma-ray flashes (TGFs) are considered as their possible sources.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"22 2","pages":"386 - 396"},"PeriodicalIF":0.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944382","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}

{"title":"Effects of Combined Neutron and Proton Beam Radiation Exposure on the Pool of Breast Cancer Stem Cells In Vitro","authors":"I. A. Zamulaeva,&nbsp;O. N. Matchuk,&nbsp;K. A. Churyukina,&nbsp;V. O. Saburov,&nbsp;S. N. Koryakin,&nbsp;S. A. Ivanov,&nbsp;A. D. Kaprin,&nbsp;E. A. Krasavin","doi":"10.1134/S1547477124701887","DOIUrl":"10.1134/S1547477124701887","url":null,"abstract":"<p>The effect is studied of single and combined proton and neutron radiation on the population of cancer stem cells (CSCs), which is the most resistant fraction of tumor cells to damaging factors, and, therefore, plays a key role in metastasis and cancer recurrence after treatment. The purpose of the study is to search for conditions for synergistic interaction of these radiations when irradiating breast cancer cells of two stable lines in vitro. It has been found that the number of CD44⁺CD24^–/low CSCs decreases after combined irradiation at a total equieffective dose of 4.0 Gy compared with the control, in contrast to the effects of γ-radiation, which leads to an increase in the number of CSCs. A synergistic decrease in the CSC pool has been shown for the combined action of neutrons and protons if the contribution of the radiations to the total dose was the same and the time between irradiation sessions did not exceed 4 h. These results are interesting for the further development of radiation therapy concerning the prospects for using new types of radiation to eliminate CSCs.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"22 1","pages":"77 - 89"},"PeriodicalIF":0.4,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865527","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}

{"title":"Abelian and Monopole Dominance in SU(3) Gluodynamics and Gribov Copy Effects","authors":"I. Kudrov,&nbsp;V. Bornyakov","doi":"10.1134/S1547477124701930","DOIUrl":"10.1134/S1547477124701930","url":null,"abstract":"<p>We continue our study of the Gribov copies effects in the Maximal Abelian gauge in lattice <span>(SU(3))</span> gluodynamics. Our computations were completed for four values of the lattice spacing with physical lattice size <span>(L approx 2)</span> fm. It is demonstrated that when one uses the effective simulated annealing algorithm to fix the gauge the obtained Gribov copies produce low abelian string tension which is below 90% of the physical value independent of the lattice spacing. These Gribov copies produce also low value (about 86%) for the monopole string tension. It is further shown that in case of less effective relaxation algorithm it is possible to obtain Gribov copies which produce both Abelian and monopole string tension in good agreement with the physical one.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"22 1","pages":"112 - 116"},"PeriodicalIF":0.4,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865431","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}

{"title":"Measurement of R at the KEDR Detector","authors":"V. V. Anashin,&nbsp;O. V. Anchugov,&nbsp;K. V. Astrelina,&nbsp;V. M. Aulchenko,&nbsp;V. V. Balakin,&nbsp;E. M. Baldin,&nbsp;G. N. Baranov,&nbsp;A. K. Barladyan,&nbsp;A. Yu. Barnyakov,&nbsp;M. Yu. Barnyakov,&nbsp;I. Yu. Basok,&nbsp;E. A. Bekhtenev,&nbsp;O. V. Belikov,&nbsp;D. E. Berkaev,&nbsp;A. E. Blinov,&nbsp;V. E. Blinov,&nbsp;A. V. Bobrov,&nbsp;V. S. Bobrovnikov,&nbsp;A. V. Bogomyagkov,&nbsp;D. Yu. Bolkhovityanov,&nbsp;A. E. Bondar,&nbsp;V. M. Borin,&nbsp;A. R. Buzykaev,&nbsp;V. L. Dorokhov,&nbsp;D. V. Dorokhova,&nbsp;F. A. Emanov,&nbsp;D. N. Grigoriev,&nbsp;V. V. Kaminskiy,&nbsp;S. E. Karnaev,&nbsp;G. V. Karpov,&nbsp;K. Yu. Karukina,&nbsp;P. V. Kasyanenko,&nbsp;A. A. Katcin,&nbsp;T. A. Kharlamova,&nbsp;V. A. Kiselev,&nbsp;A. A. Kovalenko,&nbsp;E. V. Kozyrev,&nbsp;A. A. Krasnov,&nbsp;E. A. Kravchenko,&nbsp;V. N. Kudryavtsev,&nbsp;V. F. Kulikov,&nbsp;G. Ya. Kurkin,&nbsp;I. A. Kuyanov,&nbsp;D. A. Kyshtymov,&nbsp;N. N. Lebedev,&nbsp;E. B. Levichev,&nbsp;P. V. Logachev,&nbsp;D. A. Maksimov,&nbsp;V. M. Malyshev,&nbsp;T. V. Maltsev,&nbsp;R. Z. Mamutov,&nbsp;A. L. Maslennikov,&nbsp;O. I. Meshkov,&nbsp;I. I. Morozov,&nbsp;I. A. Morozov,&nbsp;A. A. Murasev,&nbsp;S. A. Nikitin,&nbsp;I. B. Nikolaev,&nbsp;I. N. Okunev,&nbsp;S. B. Oreshkin,&nbsp;A. A. Osipov,&nbsp;I. V. Ovtin,&nbsp;A. V. Pavlenko,&nbsp;S. V. Peleganchuk,&nbsp;K. G. Petrukhin,&nbsp;P. A. Piminov,&nbsp;A. V. Polyanskiy,&nbsp;V. G. Prisekin,&nbsp;O. L. Rezanova,&nbsp;A. A. Ruban,&nbsp;G. A. Savinov,&nbsp;D. V. Senkov,&nbsp;A. G. Shamov,&nbsp;L. I. Shekhtman,&nbsp;D. A. Shvedov,&nbsp;B. A. Shwartz,&nbsp;E. A. Simonov,&nbsp;S. V. Sinyatkin,&nbsp;M. A. Skamarokha,&nbsp;A. N. Skrinsky,&nbsp;A. V. Sokolov,&nbsp;E. V. Starostina,&nbsp;D. P. Sukhanov,&nbsp;A. M. Sukharev,&nbsp;A. A. Talyshev,&nbsp;V. A. Tayursky,&nbsp;V. I. Telnov,&nbsp;Yu. A. Tikhonov,&nbsp;K. Yu. Todyshev,&nbsp;Yu. V. Usov,&nbsp;A. I. Vorobiov,&nbsp;V. N. Zhilich,&nbsp;A. A. Zhukov,&nbsp;V. V. Zhulanov,&nbsp;A. N. Zhuravlev,&nbsp;D. A. Zubkov","doi":"10.1134/S1547477124701978","DOIUrl":"10.1134/S1547477124701978","url":null,"abstract":"<p>The paper is focused on the precise measurements of the total cross section for <span>({{e}^{ + }}{{e}^{ - }})</span> annihilation into hadronic final states at the VEPP-4M collider in Novosibirsk. The KEDR collaboration has published the <i>R</i> values on 22 points in the center-of-mass energy range from 1.84 to 3.72 GeV with the accuracy better than in previous measurements. The energy range between 4.56 and 6.96 GeV was scanned at 17 points with integrated luminosity of about 13.7 pb<span>(^{{ - 1}})</span> and preliminary results of the analysis are presented.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"22 1","pages":"137 - 141"},"PeriodicalIF":0.4,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865433","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}

{"title":"Photon-Exchange Dominance over Pomeron in Forward Rapidity Gap Events in p-Pb Collisions at LHC","authors":"V. T. Kim,&nbsp;E. V. Kuznetsova,&nbsp;D. E. Sosnov","doi":"10.1134/S1547477124702133","DOIUrl":"10.1134/S1547477124702133","url":null,"abstract":"<p>The forward rapidity gap spectra from proton-lead collisions for the topologies with lead and proton dissociation. The analysis was performed at a nucleon-nucleon center-of-mass energy of 8.16 TeV with the CMS detector at LHC. The previous measurements was done by HELIOS Collaboration at <span>(sqrt {{{s}_{{NN}}}} = 29.1)</span> GeV i.e. almost 300 times lower. For the topology with the lead dissociation the EPOS-LHC and QGSJET II generator predictions are a factor of two and four, respectively, below the CMS data, but the models give a reasonable description of the shape of the spectrum. The shape of HIJING generator differs by both, energy and shape, to the CMS data. For the proton dissociation topology the electromagnetic contribution exceeds strong interaction diffraction. This measurement changes relation between the sources of the diffraction processes with nuclei: strong interaction via Pomeron and electromagnetic one with photon-exchange. Rapidity gap observable in pA measured by CMS shows for the first time that electromagnetic contribution on lead nucleus at the LHC energy exceeds strong interaction diffraction. The obtained data may be of significant help in understanding the high energy limit of QCD and modeling cosmic ray air showers.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"22 1","pages":"219 - 223"},"PeriodicalIF":0.4,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865437","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}