Персона:
Дабагов, Султан Барасбиевич

Организационные подразделения

Организационная единица

Институт нанотехнологий в электронике, спинтронике и фотонике

Институт ИНТЭЛ занимается научной деятельностью и подготовкой специалистов в области исследования физических принципов, проектирования и разработки технологий создания компонентной базы электроники гражданского и специального назначения, а также построения современных приборов на её основе. Наша основная цель – это создание и развитие научно-образовательного центра мирового уровня в области наноструктурных материалов и устройств электроники, спинтроники, фотоники, а также создание эффективной инновационной среды в области СВЧ-электронной и радиационно-стойкой компонентной базы, источников ТГц излучения, ионно-кластерных технологий материалов.

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Дабагов

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Султан Барасбиевич

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Теперь показываю 1 - 10 из 47

Только метаданные
On a zone structure for channeled particles in optical lattices
(2020) Dik, A. V.; Frolov, E. N.; Dabagov, S. B.; Дабагов, Султан Барасбиевич
© 2020 IOP Publishing Ltd and Sissa Medialab.Charged particle beams might reveal bound motion, known as channeling, in specially structured electromagnetic fields of various origins. Features of channeling motion in crystals are well established. Indeed, both classical and quantum theories of crystal channeling are well known, most of the features were experimentally proved. In this work we continue our studies on interaction of charged beams in crossed laser fields. Namely, we analyse a zone structure of channeled motion for a particle in optical lattice formed by superposition of electromagnetic fields. The particle energy spectrum in a single channel is considered. Strong difference of the energy spectrum for a channeled particle in optical lattices from those in crystals is shown.
Только метаданные
Measurement of the Positive Muon Anomalous Magnetic Moment to 0.46 ppm
(2021) Abi, B.; Albahri, T.; Al-Kilani, S.; Dabagov, S.; Дабагов, Султан Барасбиевич
© 2021 authors.We present the first results of the Fermilab National Accelerator Laboratory (FNAL) Muon g-2 Experiment for the positive muon magnetic anomaly aμ(gμ-2)/2. The anomaly is determined from the precision measurements of two angular frequencies. Intensity variation of high-energy positrons from muon decays directly encodes the difference frequency ωa between the spin-precession and cyclotron frequencies for polarized muons in a magnetic storage ring. The storage ring magnetic field is measured using nuclear magnetic resonance probes calibrated in terms of the equivalent proton spin precession frequency ω p ′ in a spherical water sample at 34.7 °C. The ratio ωa/ω p ′, together with known fundamental constants, determines aμ(FNAL)=116 592 040(54)×10-11 (0.46 ppm). The result is 3.3 standard deviations greater than the standard model prediction and is in excellent agreement with the previous Brookhaven National Laboratory (BNL) E821 measurement. After combination with previous measurements of both μ+ and μ-, the new experimental average of aμ(Exp)=116 592 061(41)×10-11 (0.35 ppm) increases the tension between experiment and theory to 4.2 standard deviations.
Только метаданные
Detailed report on the measurement of the positive muon anomalous magnetic moment to 0.20 ppm
(2024) Aguillard, D. P.; Albahri, T.; Allspach, D.; Anisenkov, A.; Dabagov, S.; Дабагов, Султан Барасбиевич
Только метаданные
On formation of exotic particles at channeling of low energy antiprotons in LiH crystals
(2019) Vysotskii, V. I.; Maksyuta, N. V.; Dabagov, S. B.; Дабагов, Султан Барасбиевич
© 2019, Springer Nature Switzerland AG. In this work we propose a new method to form both protonium exotic p p ¯ and lithium antiproton p ¯ Li + atoms by capturing the hydrogen H − and lithium Li + ions of the LiH crystal lattice at planar or axial channeling of low-energy antiproton beams. Within sudden-perturbation approximation the probability for protons as well as for ions to be bound into different quantum levels defined by the antiproton Coulomb potential are calculated. It is shown that the probability strongly depends on the parameters of channeled antiprotons revealing various extremes (resonances): the functions of capture probabilities for all excited quantum states of antiproton are characterized by three most intense peaks. Higher probability to form heavier particles, namely antiproton lithium p ¯ Li + , have been demonstrated.
Только метаданные
Focusing Properties of Bent Micro-Channel Plates in the X-Ray Range
(2019) Mazuritskiy, M. I.; Lerer, A. M.; Marcelli, A.; Hampai, D.; Dabagov, S. B.; Дабагов, Султан Барасбиевич
© 2019, Pleiades Publishing, Ltd.Abstract: Compact and flexible Micro-Channel Plate (MCP) devices are versatile optical systems suitable to condense and shape intense X-ray beams. Studies on propagation of both soft and hard X-ray radiations through these devices are of continuous interests because of increasing demand of synchrotron radiation X‑ray sources, in particular, to enhance the spot stability and to optimize the beam for specific experiments. In this work synchrotron radiation sources as well as a conventional X-ray tube coupled to polycapillary lenses have been used to characterize the transmission and the angular distribution of thin flat or spherically bent MCPs with different curvature radii. It is shown that the radiation beam from both synchrotron radiation and conventional X-ray sources can be efficiently condensed by thin spherically bent MCPs.
Только метаданные
Measurement of the anomalous precession frequency of the muon in the Fermilab Muon g-2 Experiment
(2021) Albahri, T.; Anastasi, A.; Anisenkov, A.; Badgley, K.; Dabagov, S.; Дабагов, Султан Барасбиевич
© 2021 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.The Muon g-2 Experiment at Fermi National Accelerator Laboratory (FNAL) has measured the muon anomalous precession frequency ωam to an uncertainty of 434 parts per billion (ppb), statistical, and 56 ppb, systematic, with data collected in four storage ring configurations during its first physics run in 2018. When combined with a precision measurement of the magnetic field of the experiment's muon storage ring, the precession frequency measurement determines a muon magnetic anomaly of aμ(FNAL)=116 592 040(54)×10-11 (0.46 ppm). This article describes the multiple techniques employed in the reconstruction, analysis, and fitting of the data to measure the precession frequency. It also presents the averaging of the results from the 11 separate determinations of ωam, and the systematic uncertainties on the result.
Только метаданные
On grazing scattering of a charged particle by a flat solid surface
(2024) Dik, A. V.; Dabagov, S. B.; Дабагов, Султан Барасбиевич
Только метаданные
Application of polycapillary optics to x-ray fluorescence for advanced spectroscopy and microscopy studies
(2020) Guglielmotti, V.; Hampai, D.; Micheli, L.; Mazzuca, C.; Dabagov, S. B.; Дабагов, Султан Барасбиевич
© 2020 SPIE.Advances in x-ray techniques, including x-ray optics, have paved the way to obtain challenging results in several research fields thanks to the improvement in terms of spatial resolution. This is particularly true for x-ray fluorescence (XRF), where the combination of conventional x-ray sources with polycapillary optics has permitted to have high flux and high focused beams. However, XRF spectroscopy applied to archeological samples at a lab scale is mainly dedicated to qualitative studies. At the same time, quantitative analysis still remains a strong hurdle mainly due to important matrix effects that affect the signal related to the chemical components under evaluation. In this respect the adoption of x-ray optics on both the source and the detector represents a way to improve the signal to noise ratio, necessary for quantitative analysis. At LNF XLab Frascati the expertise, gained on x-ray techniques and on polycapillary lenses, has allowed researchers to carry out advanced μXRF studies. RXR (Rainbow X-ray), is the experimental station dedicated to 2D/3D XRF micro-imaging and TXRF analysis, being equipped with 2 detectors of different energy efficiency (covering a full spectrum from 800 eV to 25 keV) and working in confocal mode with the source coupled with a full-lens and both the detectors combined with dedicated half-lenses. This report aims in depicting the RXR potentialities through the results obtained in 2 case studies dedicated to carry out a semi-quantitative analysis of 2 different artifacts (an ancient book, a Buddhist scroll) by μXRF characterization.
Только метаданные
On charged particle dynamics near flat solid surface
(2023) Dik, A. V.; Dabagov, S. B.; Дабагов, Султан Барасбиевич
Только метаданные
Shaped X-ray beams by channeling in polycapillary optics
(2020) Hampai, D.; Guglielmotti, V.; Marcelli, A.; Cappuccio, G.; Dabagov, S. B.; Дабагов, Султан Барасбиевич
© 2020 Elsevier LtdPolycapillary optics (polyCO) is an x-ray optical unit used in different instruments in a wide variety of scientific and industrial applications. The optics works utilising the phenomenon of x-ray total external reflection at radiation transmission through the optics micro-channels. The polyCO devices, according to their geometries, are capable to focus x-ray beam, manipulate divergent or quasi parallel beams. Their use may reduce both size and weight of the device resulting in low power compact x-ray instruments. However, matching polyCO parameters is crucial for developing portable, remote or in-line, industrial sensors and novel instruments for materials science, chemical-environmental and bio-medical applications. In this work we present the analyses of x-ray beam formed behind polyCO devices paying attention to the parameters such as the radiation flux, focal spot-size and divergence. X-ray techniques will be also discussed to outline state of the art of world-wide polyCO-based research.