Physics of Particles and Nuclei Letters最新文献_第3页

Phytoremediation of Urban Contaminated Soils Using Two Ornamental Plants

IF 0.4

Physics of Particles and Nuclei Letters Pub Date : 2025-05-14 DOI: 10.1134/S1547477124702431

A. Kravtsova, I. Zinicovscaia, L. Cepoi, T. Chiriac, L. Rudi, Tuan Anh Tran, Manh Dung Ho, Tuong Thi Thu Huong, Nguyen Huu Nghia, K. Vergel

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Performance and Applications of Silicon Photomultipliers for Detecting Particulate Radiations

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Physics of Particles and Nuclei Letters Pub Date : 2025-05-14 DOI: 10.1134/S1547477124702285

G. S. M. Ahmed, P. Bühler, J. Marton, M. N. H. Comsan

{"title":"Performance and Applications of Silicon Photomultipliers for Detecting Particulate Radiations","authors":"G. S. M. Ahmed, P. Bühler, J. Marton, M. N. H. Comsan","doi":"10.1134/S1547477124702285","DOIUrl":"10.1134/S1547477124702285","url":null,"abstract":"Traditional neutron detection technologies are limited in terms of sensitivity, compactness, and response time. In such detection systems, PMTs have been the dominant option. Instead of the traditional PMTs, SiPMs offer high sensitivity, compact size, and fast response time. In the current study, SiPM principles of operation as well as its most important characteristics, such as noise rate, gain, and response time, have been investigated and discussed. Furthermore, we are proposing a technique for neutron detection based on a converter material placed on/in a scintillating medium where the induced light due to neutron interaction reads out with SiPMs. Such a technology enables the development of low-cost compact detector developments. The detector we are going to illustrate makes use of four SiPM devices, which were attached directly to the ends of a well-polished organic scintillator. This allows choosing events that are strictly coincident between the two sides of the scintillator, reducing erroneous counts. The current study revealed that in order to optimize SiPM gain (≥106), timing performance (≤100 ps), and low dark count (noise rates ≤10 μA), control of the temperature and or operating voltage is essentially important. In the current study, the best achieved time resolution was ~50 ps at 0°C and 1 V over-voltage. The study addresses the neutron detector design considerations, components, assembly method, and the preliminary detector prototype test in lap using beta particles emitted from the available strontium-90 radioactive isotope. Test results revealed that our detector prototype was able to detect and distinguish between different energy β− particles with good detection efficiency.","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"22 2","pages":"289 - 296"},"PeriodicalIF":0.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944137","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 the Internuclear Axis Rotation on the Probabilities of Pair Production in Collisions of Heavy Nuclei

IF 0.4

Physics of Particles and Nuclei Letters Pub Date : 2025-05-14 DOI: 10.1134/S1547477124702479

R. V. Popov, V. M. Shabaev, I. A. Maltsev, D. A. Telnov, N. K. Dulaev, A. D. Mironov, A. M. Ryzhkov

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Properties of Radioactive Decay of the New Nucleus 227Pu

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Physics of Particles and Nuclei Letters Pub Date : 2025-05-14 DOI: 10.1134/S1547477124702510

A. A. Kuznetsova, A. I. Svirikhin, A. V. Isaev, M. A. Bychkov, V. D. Danilkin, H. M. Devaraja, N. I. Zamyatin, I. N. Izosimov, Z. Liu, O. N. Malyshev, R. S. Mukhin, A. G. Popeko, Yu. A. Popov, V. A. Rachkov, B. Sailaubekov, E. A. Sokol, M. S. Tezekbaeva, I. I. Ulanova, F. Zhang, V. I. Chepigin, M. L. Chelnokov, A. V. Yeremin

引用次数: 0

Measurement of the γ-Quanta Emission Cross Sections in Reactions (n, Xγ) for 28Si and 16O Using the Method of Tagged Neutrons with En = 14.1 MeV

IF 0.4

Physics of Particles and Nuclei Letters Pub Date : 2025-05-14 DOI: 10.1134/S154747712470225X

Yu. N. Kopatch, D. N. Grozdanov, N. A. Fedorov, T. Yu. Tretyakova, P. I. Kharlamov, A. V. Andreev, S. Dabylova, Pr. K. Das, G. V. Pampushik, I. N. Ruskov, V. R. Skoy, P. S. Prusachenko, C. Hramco, A. P. Zuev

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Elemental Composition Analysers Based on the Tagged Neutron Method

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Physics of Particles and Nuclei Letters Pub Date : 2025-05-14 DOI: 10.1134/S1547477124702297

V. Yu. Alexakhin, I. K. Komarov, A. I. Lichkunova, E. A. Razinkov, Yu. N. Rogov, M. G. Sapozhnikov, I. E. Chirikov-Zorin

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Manifestation of the Fission Dynamics in Muon-Induced Prompt Fission

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Physics of Particles and Nuclei Letters Pub Date : 2025-05-14 DOI: 10.1134/S1547477124702194

F. F. Karpeshin

引用次数: 0

Fission Induced by High Energy Particles and Energy Release in Massive Fissionable Targets Applied for ADS

IF 0.4

Physics of Particles and Nuclei Letters Pub Date : 2025-05-14 DOI: 10.1134/S154747712470242X

P. Zhivkov

{"title":"Fission Induced by High Energy Particles and Energy Release in Massive Fissionable Targets Applied for ADS","authors":"P. Zhivkov","doi":"10.1134/S154747712470242X","DOIUrl":"10.1134/S154747712470242X","url":null,"abstract":"The external driven systems (EDS) use accelerators for the generation of a high energy neutrons flux. These neutrons irradiate the nuclear fuel and the long lived high radiotoxic nuclear waste and deposit their energy by interacting with the fissionable nuclei. The neutron flux and plutonium production are calculated by using nuclear models and cross sections. The MCNP transport code is the most widely applicable software for this purpose. Most of the available cross sections data are defined up to 20 MeV, but some are up to 200 MeV (TENDL 2015 [1], JEDNL40he [2, 3], JENDL5 [4]) and 1000 MeV (ADS-II IAEA [5]). The extended cross sections data contain inaccuracies. When used for EDS calculation additional estimations of the energy deposition and high energy neutron interactions have to be done. Some of the inaccuracies are in the primary ENDF files. There are no spallation cross sections for all of the nuclides and the (n, f) reaction for Pb, Bi isotopes is nor present and the (n, xn) reactions are defined up to 30 MeV and for the energies above that the cross sections are zero. There are other inaccuracies in the ACE files. Some versions of the NJOY and FRENDY software do not process correctly the cross sections data above 20 MeV [6]. The article presents the differences in the total neutron production, fission, 239Pu production, and fission energy deposition in a cylindrical target made of depleted uranium irradiated by 1 GeV proton beam calculated by MCNP6 with above cross section data.","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"22 2","pages":"349 - 353"},"PeriodicalIF":0.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944340","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

Investigation of Irradiation Position and Target Thickness Effect on Self-Shielding Phenomena and the Product Specific Yield of 60Co and 131I in TRR

IF 0.4

Physics of Particles and Nuclei Letters Pub Date : 2025-05-14 DOI: 10.1134/S1547477124702352

Z. Gholamzadeh, A. Zali

{"title":"Investigation of Irradiation Position and Target Thickness Effect on Self-Shielding Phenomena and the Product Specific Yield of 60Co and 131I in TRR","authors":"Z. Gholamzadeh, A. Zali","doi":"10.1134/S1547477124702352","DOIUrl":"10.1134/S1547477124702352","url":null,"abstract":"The most important application of research reactors is the radioisotope production. Certain target nuclei exhibit a high neutron cross section and strong resonances, resulting in a phenomenon known as self-shielding. Computational calculations can significantly aid in determining the optimal irradiation position for any target to maximize product yield, specific yield, and minimize negative effects during the routine operation of a nuclear reactor. This study aims to investigate the irradiation of TeO2 and cobalt metal targets in the Tehran research reactor at different irradiation positions. The simulation results indicate that for TeO2 targets, there is no significant dependence of the self-shielding phenomenon on target thickness. It is evident that selecting internal irradiation boxes can enhance the yield of the 131I by a factor of 2 to 3, due to the increased neutron flux within the central irradiation boxes of the reactor core. Conversely, for 60Co, a central irradiation unit could not be employed to achieve kilocurie activity because of the substantial negative reactivity it introduced into the TRR core.","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"22 2","pages":"319 - 323"},"PeriodicalIF":0.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944304","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

Distribution of Radionuclide Impurities in Irradiated Topaz

IF 0.4

Physics of Particles and Nuclei Letters Pub Date : 2025-05-14 DOI: 10.1134/S1547477124702388

M. Bulavin, T. Enik, E. Kuznetsova, A. Rogachev, S. Tutunnikov, K. Vergel, B. Yuldashev, I. Zinicovscaia, I. Ulanova

{"title":"Distribution of Radionuclide Impurities in Irradiated Topaz","authors":"M. Bulavin, T. Enik, E. Kuznetsova, A. Rogachev, S. Tutunnikov, K. Vergel, B. Yuldashev, I. Zinicovscaia, I. Ulanova","doi":"10.1134/S1547477124702388","DOIUrl":"10.1134/S1547477124702388","url":null,"abstract":"Irradiation is one of the most efficient techniques to enhance gemstones, and color enhanced topaz is the best example of commercial application of neutron irradiation. After irradiation the color of topaz turns into deep blue resulting in so-called London blue topaz. However, neutron irradiation induces radionuclides of different half-life time and thus causes radioactivity of the gemstones. For color enhanced topaz it may take up to several months or even years for residual radioactivity to reach a safe level. The residual activity may significantly vary among topaz samples even if they have originally been obtained from the same deposit. We present results of spectroscopic analysis of about 350 irradiated topaz samples. Large variation in residual activity measured in several months after the irradiation is observed. Different types and different concentration of radionuclides are identified. To optimize the color enhancement procedure and to reduce the storage time required to reach the safe level of residual activity, a pre-irradiation procedure is proposed.","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"22 2","pages":"333 - 336"},"PeriodicalIF":0.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944337","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