Pub Date : 2023-12-01DOI: 10.3367/ufne.2023.12.039616
A. D. Pryamikov, A. Gladyshev, Aleksei F. Kosolapov, Igor' A. Bufetov
{"title":"Hollow-core fibers: state-of-the-art and prospects","authors":"A. D. Pryamikov, A. Gladyshev, Aleksei F. Kosolapov, Igor' A. Bufetov","doi":"10.3367/ufne.2023.12.039616","DOIUrl":"https://doi.org/10.3367/ufne.2023.12.039616","url":null,"abstract":"","PeriodicalId":20068,"journal":{"name":"Physics-Uspekhi","volume":"289 ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138991774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-01DOI: 10.3367/ufne.2023.12.039626
A. V. Shchepetil’nikov, Igor V. Kukushkin
{"title":"Electron spin resonance in two-dimensional electron systems","authors":"A. V. Shchepetil’nikov, Igor V. Kukushkin","doi":"10.3367/ufne.2023.12.039626","DOIUrl":"https://doi.org/10.3367/ufne.2023.12.039626","url":null,"abstract":"","PeriodicalId":20068,"journal":{"name":"Physics-Uspekhi","volume":"116 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139194343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-01DOI: 10.3367/ufne.2023.12.039618
Y. N. Eroshenko
T Faestermann (Technical University of Munich, Germany) and his co-authors have performed an experiment [1] where the bound state of four neutronsÐa tetraneutron nÐwas observed, perhaps for the first time. It has been sought (together with n and n) since the 1960s, and some indications of the occurrence of candidate events for n have been obtained. These results remained, however, ambiguous. In the new experiment, a beam of 7Liÿ ions obtained at the accelerator in Garching (Germany) was directed to an Li2O oxide target sputtered onto lithium foil, and the reactions Li(Li,C)4n were analyzed. The energy spectrum of C nuclei escaping at angles of 6ÿ9:5 was investigated using a wire proportional counter and an array of silicon detectors. With a 3s significance, a peak was revealed, which can be interpreted as a C nucleus in the first excited state and n with a binding energy of 0.42(16)MeV and a half-life of 450 s. An alternative hypothesis that the four escaping electrons are not bound cannot be ruled out yet, but the authors of this study believe that this possibility is less probable, because the observed peak in the spectrum is much narrower than it should be in this case. The reaction Li(Li,C)4n was already examined earlier at the Kurchatov Institute [2], but at higher energies, due to which the presence of the bound state of n could not be found.
T Faestermann（德国慕尼黑工业大学）和他的合著者进行了一次实验[1]，也许是第一次观测到四个中子的束缚态--四重中子 n。自 20 世纪 60 年代以来，人们一直在寻找这种状态（连同 n 和 n），并获得了一些 n 候选事件发生的迹象。然而，这些结果仍然模棱两可。在新的实验中，一束从德国加兴（Garching）加速器获得的 7Liÿ 离子被引向溅射到锂箔上的 Li2O 氧化物靶，并对 Li(Li,C)4n 反应进行了分析。利用线比例计数器和硅探测器阵列研究了以 6ÿ9:5 角度逸出的 C 核能谱。在 3s 的意义下，发现了一个峰值，可解释为处于第一激发态的 C 核和结合能为 0.42(16)MeV 和半衰期为 450 s 的 n。库尔恰托夫研究所早些时候已经对 Li(Li,C)4n 反应进行过研究 [2]，但当时的能量较高，因此无法发现 n 的束缚态存在。
{"title":"Physics news on the Internet: January 2024","authors":"Y. N. Eroshenko","doi":"10.3367/ufne.2023.12.039618","DOIUrl":"https://doi.org/10.3367/ufne.2023.12.039618","url":null,"abstract":"T Faestermann (Technical University of Munich, Germany) and his co-authors have performed an experiment [1] where the bound state of four neutronsÐa tetraneutron nÐwas observed, perhaps for the first time. It has been sought (together with n and n) since the 1960s, and some indications of the occurrence of candidate events for n have been obtained. These results remained, however, ambiguous. In the new experiment, a beam of 7Liÿ ions obtained at the accelerator in Garching (Germany) was directed to an Li2O oxide target sputtered onto lithium foil, and the reactions Li(Li,C)4n were analyzed. The energy spectrum of C nuclei escaping at angles of 6ÿ9:5 was investigated using a wire proportional counter and an array of silicon detectors. With a 3s significance, a peak was revealed, which can be interpreted as a C nucleus in the first excited state and n with a binding energy of 0.42(16)MeV and a half-life of 450 s. An alternative hypothesis that the four escaping electrons are not bound cannot be ruled out yet, but the authors of this study believe that this possibility is less probable, because the observed peak in the spectrum is much narrower than it should be in this case. The reaction Li(Li,C)4n was already examined earlier at the Kurchatov Institute [2], but at higher energies, due to which the presence of the bound state of n could not be found.","PeriodicalId":20068,"journal":{"name":"Physics-Uspekhi","volume":"146 ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139013660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-01DOI: 10.3367/ufne.2023.12.039620
Sergei V. Garnov, Dmitrii V. Abramov, Dmitrii N. Bukharov, Timur A. Khudaiberganov, Khor'kov Kirill sergeevich, Anton V. Osipov, Svetlana V. Zhirnova, Aleksei O. Kucherik, Sergei M. Arakelyan
{"title":"Electrophysics of the 1D-carbon structures obtained by laser-induced processes: models and experimental demonstrations","authors":"Sergei V. Garnov, Dmitrii V. Abramov, Dmitrii N. Bukharov, Timur A. Khudaiberganov, Khor'kov Kirill sergeevich, Anton V. Osipov, Svetlana V. Zhirnova, Aleksei O. Kucherik, Sergei M. Arakelyan","doi":"10.3367/ufne.2023.12.039620","DOIUrl":"https://doi.org/10.3367/ufne.2023.12.039620","url":null,"abstract":"","PeriodicalId":20068,"journal":{"name":"Physics-Uspekhi","volume":"70 ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139014779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-01DOI: 10.3367/ufne.2023.12.039622
G. Liziakin, A. V. Gavrikov, S. Kuzmichev, Valentin P. Smirnov, R. Usmanov
{"title":"Generation of the radial electric field in a cylindrical plasma column with an axial magnetic field","authors":"G. Liziakin, A. V. Gavrikov, S. Kuzmichev, Valentin P. Smirnov, R. Usmanov","doi":"10.3367/ufne.2023.12.039622","DOIUrl":"https://doi.org/10.3367/ufne.2023.12.039622","url":null,"abstract":"","PeriodicalId":20068,"journal":{"name":"Physics-Uspekhi","volume":"171 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139022280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-01DOI: 10.3367/ufne.2023.12.039614
Maria S. Murga
{"title":"Evolution of carbonaceous grains from the stage of AGB stars to planetary nebulae: observations, experiments, theory","authors":"Maria S. Murga","doi":"10.3367/ufne.2023.12.039614","DOIUrl":"https://doi.org/10.3367/ufne.2023.12.039614","url":null,"abstract":"","PeriodicalId":20068,"journal":{"name":"Physics-Uspekhi","volume":" 2","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138618723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-01DOI: 10.3367/ufne.2023.11.039592
{"title":"In memory of Vladimir Evgen'evich Zakharova","authors":"","doi":"10.3367/ufne.2023.11.039592","DOIUrl":"https://doi.org/10.3367/ufne.2023.11.039592","url":null,"abstract":"","PeriodicalId":20068,"journal":{"name":"Physics-Uspekhi","volume":"289 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139299010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-01DOI: 10.3367/ufne.2023.11.039604
Tat'yana B. Charikova, Nina G. Shelushina, Vladimir N. Neverov, Mikhail R. Popov
{"title":"Effects of tunneling in highly anisotropic layers of superconductors","authors":"Tat'yana B. Charikova, Nina G. Shelushina, Vladimir N. Neverov, Mikhail R. Popov","doi":"10.3367/ufne.2023.11.039604","DOIUrl":"https://doi.org/10.3367/ufne.2023.11.039604","url":null,"abstract":"","PeriodicalId":20068,"journal":{"name":"Physics-Uspekhi","volume":"19 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139305083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-01DOI: 10.3367/ufne.2023.11.039589
Alexander D. Panov, Dmitrii M. Podorozhnyi, Andrei N. Turundaevskii
{"title":"Direct observations of cosmic rays: current status of the problem","authors":"Alexander D. Panov, Dmitrii M. Podorozhnyi, Andrei N. Turundaevskii","doi":"10.3367/ufne.2023.11.039589","DOIUrl":"https://doi.org/10.3367/ufne.2023.11.039589","url":null,"abstract":"","PeriodicalId":20068,"journal":{"name":"Physics-Uspekhi","volume":"20 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135664788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-01DOI: 10.3367/ufne.2023.11.039594
E. Zakharova
{"title":"New books on physics and related sciences: December 2023","authors":"E. Zakharova","doi":"10.3367/ufne.2023.11.039594","DOIUrl":"https://doi.org/10.3367/ufne.2023.11.039594","url":null,"abstract":"","PeriodicalId":20068,"journal":{"name":"Physics-Uspekhi","volume":"5 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139293950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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