Physics of Atomic Nuclei最新文献_第2页

Higher (chi_{{cJ}}{(nP)}), ({h}_{{c}}{(nP)}) States and the Role of the Gluon-Exchange Potential

IF 0.3 4区物理与天体物理

Physics of Atomic Nuclei Pub Date : 2025-03-07 DOI: 10.1134/S1063778824700984

A. M. Badalian

{"title":"Higher (chi_{{cJ}}{(nP)}), ({h}_{{c}}{(nP)}) States and the Role of the Gluon-Exchange Potential","authors":"A. M. Badalian","doi":"10.1134/S1063778824700984","DOIUrl":"10.1134/S1063778824700984","url":null,"abstract":"The masses, the fine-structure splitting, and two-photon decay widths of the higher (nP)-charmonium states are calculated in the relativistic string model, reduced to the spinless Salpeter equation, where the static potential has no fitting parameters and the c-quark mass has the physical value. The resulting masses of (h_{c}left(3Pright)), (chi_{c1}left(3Pright)), (chi_{c0}left(4Pright)), (chi_{c0}left(5Pright)), (chi_{c1}left(5Pright)) are obtained in a good agreement with the experimental masses of the LHCb resonances: (h_{c})(4300), (chi_{c1})(4274), (X)(4500), (X)(4700), (X)(4685). To test sensitivity of results to a chosen gluon-exchange (GE) potential, three types of (V_{textrm{ ge}}(r)) are considered. In first case the non-screened GE potential with large vector coupling at asymptotic, (alpha_{V}(textrm{asym.})=0.635), and the c-quark mass (m_{c}=1.430) GeV are taken; in second case a screened (V_{textrm{ge}}) and (m_{c}=1.385) GeV are investigated, and in third case the GE potential is totally suppressed, (V_{textrm{ge}}=0), and (m_{c}=1.32) GeV. The agreement with experiment is reached only if the same (universal) flattened confining potential, introduced in the analysis of the radial Regge trajectories of light mesons, is used. The unobserved (6P), (0^{+}) resonance with the mass ({cong}4.826(13)) GeV, near (J/psiphi)(1680) threshold, is predicted. Our analysis shows that the screening of the GE potential is possible but weakly affects the physical results obtained. The calculated two-photon decay widths weakly differ in the three cases but may become an important factor, which distinguishes (cbar{c}) and four-quark states.","PeriodicalId":728,"journal":{"name":"Physics of Atomic Nuclei","volume":"87 3 supplement","pages":"S461 - S470"},"PeriodicalIF":0.3,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143571081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0

Determination of Mechanical and Tribotechnical Properties of Coatings with Additives of Metal Carbides during Laser Surfacing

IF 0.3 4区物理与天体物理

Physics of Atomic Nuclei Pub Date : 2025-03-05 DOI: 10.1134/S1063778824090060

V. P. Biryukov

引用次数: 0

Laboratory Source of Light Ions with a Discharge Chamber Based on an Out-of-Limit Waveguide for Installing on a High-Voltage Platform

IF 0.3 4区物理与天体物理

Physics of Atomic Nuclei Pub Date : 2025-03-05 DOI: 10.1134/S1063778824100442

D. N. Seleznev, A. B. Zarubin, N. N. Vinogradsky, K. E. Pryanishnikov, P. A. Fedin, T. V. Kulevoy

引用次数: 0

Nanostructure of Oxide Dispersion-Strengthened Steel Mechanically Alloyed with Intermetallic Fe3Y

IF 0.3 4区物理与天体物理

Physics of Atomic Nuclei Pub Date : 2025-03-05 DOI: 10.1134/S1063778824110061

S. V. Rogozhkin, A. V. Klauz, A. A. Nikitin, A. A. Khalyavina, O. A. Raznitsyn, A. A. Bogachev, N. A. Iskandarov, A. G. Zaluzhny

{"title":"Nanostructure of Oxide Dispersion-Strengthened Steel Mechanically Alloyed with Intermetallic Fe3Y","authors":"S. V. Rogozhkin, A. V. Klauz, A. A. Nikitin, A. A. Khalyavina, O. A. Raznitsyn, A. A. Bogachev, N. A. Iskandarov, A. G. Zaluzhny","doi":"10.1134/S1063778824110061","DOIUrl":"10.1134/S1063778824110061","url":null,"abstract":"In this work, the nanostructure of oxide dispersion-strengthened steel 13.5Cr–Fe3Y ODS, obtained by mechanical alloying of oxidized matrix steel powder and Fe3Y intermetallic powder. In addition to the initial state, the effect of thermal aging on the nanostructure of this steel at 650°C for 500 and 1000 h was investigated. In the studied states of 13.5Cr–Fe3Y ODS steel, transmission electron microscopy (TEM) has detected nanoscale oxides (~10–12 nm) with a number density of ~4–7 × 1021 m–3, pores (~3.0–3.6 nm and ~2–4 × 1022 m–3), as well as the dislocations ~2 × 1014 m–2. According to the energy-dispersive X-ray spectroscopy analysis, oxide particles are mainly enriched in Y and O, and the detected pores contain up to 3 at. % Ar. Atom probe tomography (APT) revealed the presence of clusters (~3–5 nm and ~8–30 × 1022 m–3). The detected clusters also contain Ar within 0.1 at. %. Comparison of the data on the initial state and states after thermal aging revealed an increase in the number density of oxides and a decrease in their size with an increase in the thermal aging time, while the volume of the oxide phase at 1000 h remains the same relative to the initial state within the limits of error. Comparison of APT data showed an increase in the volume of clusters during aging up to 500 h and a decrease in the volume at 1000 h. An increase in the number of oxides during thermal aging up to 1000 h correlates with a decrease in the volume of clusters in the same state. There is a significant (~2 times) decrease in pore volume during thermal aging. The density of dislocations increases to ~5 × 1014 m–2 when reaching 1000 h of aging.","PeriodicalId":728,"journal":{"name":"Physics of Atomic Nuclei","volume":"87 12","pages":"1800 - 1813"},"PeriodicalIF":0.3,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143554121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0

Study of the α Fragmentation of the 12C and 16O Nuclei in a 7 GeV/c Positive Hadron Beam of the U-70 Accelerator Complex

IF 0.3 4区物理与天体物理

Physics of Atomic Nuclei Pub Date : 2025-03-05 DOI: 10.1134/S1063778824090138

A. M. Gorin, S. V. Evdokimov, A. A. Zaitsev, P. I. Zarubin, V. I. Izucheev, D. S. Krinitsyn, B. V. Polishchuk, V. I. Rykalin, S. A. Sadovsky, Yu. V. Kharlov, A. A. Shangaraev

引用次数: 0

The Response of a Vortex System in a Layered HTS Composite with Radiation Defects to a Short Current Pulse

IF 0.3 4区物理与天体物理

Physics of Atomic Nuclei Pub Date : 2025-03-05 DOI: 10.1134/S1063778824110036

A. N. Maksimova, A. N. Moroz, S. V. Pokrovskij, V. A. Kashurnikov

引用次数: 0

Analysis of Craters in Tungsten Films Irradiated with Picosecond Laser Pulses for Laser-Assisted Surface Diagnostics

IF 0.3 4区物理与天体物理

Physics of Atomic Nuclei Pub Date : 2025-03-05 DOI: 10.1134/S1063778824110012

N. E. Efimov, D. N. Sinelnikov, M. V. Grishaev, Yu. M. Gasparyan, S. A. Krat, I. A. Sorokin

引用次数: 0

Off-Axis Injection Simulation for SYLA Storage Ring

IF 0.3 4区物理与天体物理

Physics of Atomic Nuclei Pub Date : 2025-03-05 DOI: 10.1134/S1063778824090102

V. S. Dyubkov

引用次数: 0

Rigidity Spectrum of Forbush Effects Observed During Solar Cycles 24 and 25

IF 0.3 4区物理与天体物理

Physics of Atomic Nuclei Pub Date : 2025-03-05 DOI: 10.1134/S1063778824110085

P. A. Sukhova, I. I. Astapov, N. S. Barbashina, P. S. Kuzmenkova, I. A. Lagoida, Yu. N. Mishutina, V. V. Shutenko

引用次数: 0

Radiation Testing of a Small Laboratory Animal Phantom Created by Fused Filament Fabrication

IF 0.3 4区物理与天体物理

Physics of Atomic Nuclei Pub Date : 2025-03-05 DOI: 10.1134/S1063778824100132

A. A. Grigorieva, A. A. Bulavskaya, E. A. Bushmina, V. A. Kuyvalaynen, I. A. Miloichikova, S. G. Stuchebrov

{"title":"Radiation Testing of a Small Laboratory Animal Phantom Created by Fused Filament Fabrication","authors":"A. A. Grigorieva, A. A. Bulavskaya, E. A. Bushmina, V. A. Kuyvalaynen, I. A. Miloichikova, S. G. Stuchebrov","doi":"10.1134/S1063778824100132","DOIUrl":"10.1134/S1063778824100132","url":null,"abstract":"In order to validate new radiotherapeutic techniques, a large number of studies using ionizing radiation are required. Such studies are often carried out using small laboratory animals, such as mice and rats, that is cause the ethical questions of the international scientific community. In this regard, the application of artificial animal models is relevant. It will allow to reduce the number of animals used. In previous studies, homogeneous monolithic test objects were fabricated and dosimetric tests were performed. 3D-printing parameters and materials were determined for the most accurate imitation of biological tissues. This study proposes to use fused filament fabrication techniques for design and creation of heterogeneous objects from different materials, which will allow the fabrication of phantoms with high accuracy in a short period of time. In this work, the male rat dosimetric phantom was designed and created. Its tomographic and dosimetric tests were carried out. The possibility of manufacturing dosimetric phantoms of small laboratory animals by fused filament fabrication methods was shown.","PeriodicalId":728,"journal":{"name":"Physics of Atomic Nuclei","volume":"87 12","pages":"1934 - 1939"},"PeriodicalIF":0.3,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0