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259 results on '"Banas, D."'

1. A high-resolution asymmetric von Hamos spectrometer for low-energy X-ray spectroscopy at the CRYRING@ESR electron cooler

Author

Jagodziński, P., Banaś, D., Pajek, M., Kubala-Kukuś, A., Jabłoński, Ł., Stabrawa, I., Szary, K., Sobota, D., Warczak, A., Gumberidze, A., Beyer, H. F., Lestinsky, M., Weber, G., Stöhlker, Th., and Trassinelli, M.

Subjects
Physics - Atomic Physics
Abstract

We present research program and project for high-resolution wavelength-dispersive spectrometer dedicated to low-energy X-ray spectroscopy at the electron cooler of the CRYRING@ESR storage ring, which is a part of the international Facility for Antiproton and Ion Research (FAIR) currently being built in Darmstadt. Due to the unique shape of the electorn-ion recombination X-ray source, resulting from the overlapping of the electron and ion beams in the electron cooler, the spectrometer can work in the specific asymmetric von Hamos (AvH) geometry. In order to completely eliminate the influence of Doppler effect on the measured X-ray energies, two asymmetric von Hamos spectrometers will be installed next to the dipole magnets on both sides of the electron cooler to detect blue/red (0$^{\circ}$/180$^{\circ}$) shifted X-rays, e.g. emitted in the radiative recombination (RR) process. The X-ray-tracing Monte-Carlo simulations show that the proposed AvH spectrometer will allow to determine with sub-meV precision, the low-energy X-rays (5-10 keV) emitted from stored bare or few-electron heavy ions interacting with cooling electrons. This experimental precision will enable accurate studies of the quantum electrodynamics (QED) effects in mid-Z H- and He-like ions.

Published
2023
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2. Energy deposition and formation of nanostructures in the interaction of highly charged xenon ions with gold nanolayers

Author

Stabrawa, I., Banaś, D., Kubala-Kukuś, A., Jabłoński, Ł., Jagodziński, Sobota, D., Szary, K., Pajek, M., Skrzypiec, K., Mendyk, E., Borysiewicz, M., Majkić, M. D., and Nedeljković, N. N.

Subjects
Physics - Atomic Physics, Condensed Matter - Materials Science, Physics - Applied Physics
Abstract

The effect of the deposition of kinetic energy and neutralization energy of slow highly charged xenon ions on the process of the nanostructures creation at the surface of gold nanolayers is investigated. The nanolayers of thickness of 100 nm were prepared by e-beam evaporation of gold on crystalline silicon Si(100) substrate. The samples were irradiated at the Kielce EBIS facility of the Jan Kochanowski University (Kielce, Poland), under high vacuum conditions. The irradiations were performed for constant kinetic energy 280 keV and different ions charge states (Xe$^{q+}$, q = 25, 30, 35, 36 and 40) and for constant charge state Xe$^{35+}$ and different kinetic energies: 280 keV, 360 keV, 420 keV and 480 keV. The fluence of the ions was on the level of 10$^{10}$ ions/cm$^2$. Before and after irradiation the nanolayer surfaces were investigated using the atomic force microscope. As the result, well pronounced modifications of the nanolayer surfaces in the form of craters have been observed. A systematic analysis of the crater sizes (diameter on the surface and depth) allowed us to determine the influence of the deposited kinetic and the neutralization energy on the size of the obtained nanostructures. The results are theoretically interpreted within the micro-staircase model based on the quantum two-state vector model of the ionic Rydberg states population. The charge dependent ion-atom interaction potential inside the solid is used for the calculation of the nuclear stopping power. According to the model the formation of the nanostructures is governed by the processes of the ionic neutralization in front of the surface and the kinetic energy loss inside the solid., Comment: 12 pages, 7 figures, Submitted to Vacuum journal on May 29th, 2022

Published
2023
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3. Electron-loss-to-continuum cusp in collisions of U$^{89+}$ with N$_{2}$ and Xe

Author

Hillenbrand, P. -M., Lyashchenko, K. N., Hagmann, S., Andreev, O. Yu., Banas, D., Benis, E. P., Bondarev, A. I., Brandau, C., De Filippo, E., Forstner, O., Glorius, J., Grisenti, R. E., Gumberidze, A., Guo, D. L., Herdrich, M. O., Lestinsky, M., Litvinov, Yu. A., Pagano, E. V., Petridis, N., Sanjari, M. S., Schury, D., Spillmann, U., Trotsenko, S., Vockert, M., Voitkiv, A. B., Weber, G., and Stöhlker, Th.

Subjects
Physics - Atomic Physics
Abstract

We study the electron-loss-to-continuum (ELC) cusp experimentally and theoretically by comparing the ionization of U$^{89+}$ projectiles in collisions with N$_2$ and Xe targets, at a beam energy of 75.91 MeV/u. The coincidence measurement between the singly ionized projectile and the energy of the emitted electron is used to compare the shape of the ELC cusp at weak and strong perturbations. A significant energy shift for the centroid of the electron cusp is observed for the heavy target of Xe as compared to the light target of N$_2$. Our results provide a stringent test for fully relativistic calculations of double-differential cross sections performed in the first-order approximation and in the continuum-distorted-wave approach.

Published
2021
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6. Influence of target material impurities on physical results in relativistic heavy-ion collisions

Author

Banas, D., Kubala-Kukus, A., Rybczynski, M., Stabrawa, I., and Stefanek, G.

Subjects
Nuclear Experiment, High Energy Physics - Experiment
Abstract

This paper presents the studies on the influence of the target material impurities on physical observables registered in heavy ion collisions collected by fixed target experiments. It mainly concerns the measures of multiplicity fluctuations which can be used to searches for critical point of strongly interacting matter, e.g. in the {NA61/SHINE} fixed-target experiment at CERN SPS. The elemental composition of the targets used in the NA61/SHINE experiment was determined applying wavelength dispersive X-ray fluorescence (WDXRF) technique. The influence of measured target impurities on multiplicity distributions and scaled variance was estimated using simulation events. The modification of the standard analysis was proposed to reduce this influence., Comment: 12 pages, 11 figures

Published
2018

7. Wavelength-dispersive spectroscopy in the hard x-ray regime of a heavy highly-charged ion: The 1s Lamb shift in hydrogen-like gold

Author

Gassner, T., Trassinelli, M., Heß, R., Spillmann, U., Banas, D., Blumenhagen, K. -H., Bosch, F., Brandau, C., Chen, W., Dimopoulou, C., Förster, E., Grisenti, R., Gumberidze, A., Hagmann, S., Hillenbrand, P. -M., Indelicato, P., Jagodzinski, P., Kämpfer, T., Kozhuharov, C., Lestinsky, M., Liesen, D., Litvinov, Y., Loetzsch, R., Manil, B., Märtin, R., Nolden, F., Petridis, M., Sanjari, M., Schulze, K., Schwemlein, M., Simionovici, A., Steck, M., Stöhlker, T., Szabo, C., Trotsenko, S., Uschmann, I., Weber, G., Wehrhan, O., Winckler, N., Winters, D., Winters, N., Ziegler, E., and Beyer, H.

Subjects
Physics - Atomic Physics
Abstract

Accurate spectroscopy of highly charged high-Z ions in a storage ring is demonstrated to be feasible by the use of specially adapted crystal optics. The method has been applied for the measurement of the 1s Lamb shift in hydrogen-like gold (Au 78+) in a storage ring through spectroscopy of the Lyman x rays. This measurement represents the first result obtained for a high-Z element using high-resolution wavelength-dispersive spectroscopy in the hard x-ray regime, paving the way for sensitivity to higher-order QED effects.

Published
2017
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16. X-ray Photoelectron Spectroscopy in the Analysis of Titanium and Palladium Nanolayers.

Author

WESOŁOWSKI, G., KUBALA-KUKUS, A., BANAS, D., SZARY, K., STABRAWA, I., FOKS, A., JABŁONSKI, Ł., JAGODZINSKI, P., PAJEK, M., STACHURA, R., SOBOTA, D., BORYSIEWICZ, M., and SADOWSKI, O.

Subjects
X-ray photoelectron spectroscopy, X-ray photoelectron spectra, X-ray reflection, BINDING energy, MAGNETRON sputtering, REFLECTANCE spectroscopy, IRRADIATION
Abstract

In the presented study, X-ray photoelectron spectroscopy and total reflection X-ray photoelectron spectroscopy methods were applied to analyze the Ti (75 nm) and Pd (100 nm) nanolayers deposited on the Si substrate using magnetron sputtering. The aim of the research was to determine the elemental composition and surface homogeneity of the analyzed nanolayers before their irradiation with highly charged xenon ions and to estimate the detection limit of the X-ray photoelectron spectroscopy technique for various glancing angles. The measurements were conducted using the SPECS mono-XPS system in the Institute of Physics at the Jan Kochanowski University (Kielce, Poland). The experimental setup and measurement conditions for the studied Ti and Pd layers are described. The X-ray photoelectron spectroscopy spectra were registered both for the non-total (35° and 10° angles) and total reflection (2:2° for the Pd nanolayer and 1:5° for the Ti nanolayer) regimes. The position of the C 1s photoelectron peak was applied (C-C component, binding energy 284.8 eV) to calibrate energy. First, the homogeneity of the nanolayers was investigated. The analysis of spectra concentrated on investigating the photoelectron peaks and, consequently, on determining the following: the binding energy of electrons, the intensity and full width at half maximum of photoelectron peaks, the background level, and the elemental composition of the nanolayer surface. In this study, the detection limit of the X-ray photoelectron spectroscopy measurements for different photoelectron peaks was calculated in relation to the excitation angle. An improvement of the X-ray photoelectron spectroscopy detection limit by a factor of 3-6, depending on the type of photoelectron peak, was observed for the angles below the critical angle of the X-ray total reflection phenomenon. [ABSTRACT FROM AUTHOR]

Published
2024
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17. A global analysis of terrestrial plant litter dynamics in non-perennial waterways

Author

Datry, T., Foulquier, A., Corti, R., von Schiller, D., Tockner, K., Mendoza-Lera, C., Clément, J. C., Gessner, M. O., Moleón, M., Stubbington, R., Gücker, B., Albariño, R., Allen, D. C., Altermatt, F., Arce, M. I., Arnon, S., Banas, D., Banegas-Medina, A., Beller, E., Blanchette, M. L., Blanco-Libreros, J. F., Blessing, J. J., Boëchat, I. G., Boersma, K. S., Bogan, M. T., Bonada, N., Bond, N. R., Brintrup Barría, K. C., Bruder, A., Burrows, R. M., Cancellario, T., Canhoto, C., Carlson, S. M., Cauvy-Fraunié, S., Cid, N., Danger, M., de Freitas Terra, Bianca, De Girolamo, A. M, de La Barra, Evans, del Campo, R., Diaz-Villanueva, V. D., Dyer, F., Elosegi, A., Faye, E., Febria, C., Four, B., Gafny, S., Ghate, S. D., Gómez, R., Gómez-Gener, L., Graça, M. A. S., Guareschi, S., Hoppeler, F., Hwan, J. L., Jones, J. I., Kubheka, S., Laini, A., Langhans, S. D., Leigh, C., Little, C. J., Lorenz, S., Marshall, J. C., Martín, E., McIntosh, A. R., Meyer, E. I., Miliša, M., Mlambo, M. C., Morais, M., Moya, N., Negus, P. M., Niyogi, D. K., Papatheodoulou, A., Pardo, I., Pařil, P., Pauls, S. U., Pešić, V., Polášek, M., Robinson, C. T., Rodríguez-Lozano, P., Rolls, R. J., Sánchez-Montoya, M. M., Savić, A., Shumilova, O., Sridhar, K. R., Steward, A. L., Storey, R., Taleb, A., Uzan, A., Vander Vorste, Ross, Waltham, N. J., Woelfle-Erskine, C., Zak, D., Zarfl, C., and Zoppini, A.

Published
2018
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30. Author Correction: A global analysis of terrestrial plant litter dynamics in non-perennial waterways

Author

Datry, T., Foulquier, A., Corti, R., von Schiller, D., Tockner, K., Mendoza-Lera, C., Clément, J. C., Gessner, M. O., Moleón, M., Stubbington, R., Gücker, B., Albariño, R., Allen, D. C., Altermatt, F., Arce, M. I., Arnon, S., Banas, D., Banegas-Medina, A., Beller, E., Blanchette, M. L., Blanco-Libreros, J. F., Blessing, J. J., Boëchat, I. G., Boersma, K. S., Bogan, M. T., Bonada, N., Bond, N. R., Brintrup Barría, K. C., Bruder, A., Burrows, R. M., Cancellario, T., Canhoto, C., Carlson, S. M., Cauvy-Fraunié, S., Cid, N., Danger, M., de Freitas Terra, Bianca, De Girolamo, A. M, de La Barra, Evans, del Campo, R., Diaz-Villanueva, V. D., Dyer, F., Elosegi, A., Faye, E., Febria, C., Four, B., Gafny, S., Ghate, S. D., Gómez, R., Gómez-Gener, L., Graça, M. A. S., Guareschi, S., Hoppeler, F., Hwan, J. L., Jones, J. I., Kubheka, S., Laini, A., Langhans, S. D., Leigh, C., Little, C. J., Lorenz, S., Marshall, J. C., Martín, E., McIntosh, A. R., Meyer, E. I., Miliša, M., Mlambo, M. C., Morais, M., Moya, N., Negus, P. M., Niyogi, D. K., Papatheodoulou, A., Pardo, I., Pařil, P., Pauls, S. U., Pešić, V., Polášek, M., Robinson, C. T., Rodríguez-Lozano, P., Rolls, R. J., Sánchez-Montoya, M. M., Savić, A., Shumilova, O., Sridhar, K. R., Steward, A. L., Storey, R., Taleb, A., Uzan, A., Vander Vorste, Ross, Waltham, N. J., Woelfle-Erskine, C., Zak, D., Zarfl, C., and Zoppini, A.

Published
2018
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38. Polarization and anisotropic emission of K-shell radiation from heavy few electron ions

Author

Thorn, D.B., Gumberidze, A., Trotsenko, S., Banas, D., Beyer, H., Bostock, C.J., Bray, I., Chen, W., DuBois, R., Fontes, C.J., Fritzsche, S., Fursa, D.V., Grisenti, R., Geyer, S., Hagmann, S., Hess, S., Hegewald, M., Kozhuharov, C., Martin, R., Orban, I., Petridis, N., Reuschl, R., Simon, A., Spillmann, U., Surzhykov, A., Trassinelli, M., Weber, G., Winters, D.F.A., Winters, N., Zhang, H.L., and Stohlker, Th.

Subjects
Anisotropy -- Research, Heavy ions -- Properties, Radiation -- Research, Polarization (Electricity) -- Research, Physics
Abstract

The population of magnetic sublevels in hydrogen-like uranium ions has been investigated in relativistic ion- atom collisions by observing the subsequent X-ray emission. Using the gas target at the experimental storage ring facility we observed the angular emission of Lyman-α radiation from hydrogen-like uranium ions. The alignment parameter for three different interaction energies was measured and found to agree well with theory. In addition, the use of different gas targets allowed for the electron-impact excitation process to be observed. PACS Nos: 34.10.+x, 34.80.Dp, 33.20.Rm, 32.70.Fw La population des sous-niveaux magnetiques des ions hydrogenoides d'uranium a ete etudiee dans les collisions relativistes ion-atome en observant remission subsequente de rayons-X. Utilisant la cible gazeuse d'un anneau de stockage, nous avons observe remission angulaire du rayonnement Lyman-α d'ions hydrogenoi'des d'uranium. Le parametre d'alignement pour les trois energies d'interaction a ete mesuree et a ete trouve en accord avec la theorie. En outre, l'utilisation de differents types de gaz comme cible a permis l'observation le processus d'excitation par impact electronique. [Traduit par la Redaction], 1. Introduction The polarization and anisotropic emission of atomic radiation is indicative of a preferred direction in space. Such directionality appears in environments with intense charged particle beams, such as [...]

Published
2011
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42. High-accuracy crystal spectroscopy of the n = 2 energy level of helium-like uranium (1)

Author

Trassinelli, M., Banas, D., Beyer, H.F., Jagodzinski, P., Kumar, A., Pajek, M., and Stohlker, Th.

Subjects
Transition state (Chemistry) -- Research -- Methods, Energy levels (Quantum mechanics) -- Research -- Methods, Spectrum analysis -- Methods -- Research, Uranium -- Research -- Methods, Physics, Research, Methods
Abstract

Abstract: We present a new experiment for the accurate study of the intrashell transition 1s2p ³[P.sub.2] → 1s2s ³[S.sub.1] in helium-like uranium near 4.5 keV using a Johann-type Bragg spectrometer [...]

Published
2007

43. The FOCAL spectrometer for accurate X-ray spectroscopy of fast heavy ions

Author

Chatterjee, S., Beyer, H.F., Liesen, D., Stöhlker, Th., Gumberidze, A., Kozhuharov, Chr., Banas, D., Protic, D., Beckert, K., Beller, P., Krings, Th., Bosch, F., Franzke, B., Hagmann, S., Hoszowska, J., Indelicato, P., Kluge, H.-J., Ma, X., Manil, B., Mohos, I., Nolden, F., Popp, U., Simionovici, A., Sierpowski, D., Steck, M., Spillmann, U., Brandau, C., Förster, E., Stachura, Z., Tashenov, S., Trassinelli, M., Warczak, A., Wehrhan, O., Ziegler, E., Trotsenko, S., and Reuschl, R.

Published
2006
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45. A collapse surface for a perforated plate with an equilateral triangular array of penetrations

Author

Gordon, J.L., Jones, D.P., Banas, D., and Hutula, D.N.

Subjects
Pressure vessels -- Research, Plates (Engineering) -- Research, Holes -- Research, Finite element method -- Research, Engineering and manufacturing industries
Abstract

A collapse surface is developed for use in limit-load analysis of plates containing a large number of small circular penetrations arranged in an equilateral triangular array of holes with a ligament efficiency of 0.31733. The collapse surface is obtained by calculating the limit load for a unit cell model of the penetration pattern using a three-dimensional elastic-perfectly plastic [EPP] finite element analysis [FEA] computer program. The EPP response from incipient yielding to plastic collapse for the unit cell is obtained for a sufficient number of load cases to define the complete collapse surface. The collapse surface is expressed analytically by using a fourth-order function that incorporates the periodicity dictated by the triangular hole pattern. The coefficients of the fourth-order function were obtained by statistically fitting the collapse surface generated by the EPP-FEA results. The resulting collapse surface was shown to be appropriate for development of an EPP-EQS theory for perforated plates. The analytic surface agrees to within 7 percent of the actual collapse surface obtained by EPP-FEA of the unit cell representing the penetration. [DOI: 10.1115/1.1357537]

Published
2002

49. Sediment Respiration Pulses in Intermittent Rivers and Ephemeral Streams

Author

von Schiller, D, Datry, T, Corti, R, Foulquier, A, Tockner, K, Marcé, R, García‐Baquero, G, Odriozola, I, Obrador, B, Elosegi, A, Mendoza‐Lera, C, Gessner, M O, Stubbington, R, Albariño, R, Allen, D C, Altermatt, Florian, Arce, M I, Arnon, S, Banas, D, Banegas‐Medina, A, Beller, E, Blanchette, M L, Blanco‐Libreros, J F, Blessing, J, Boëchat, I G, Boersma, K S, Bogan, M T, Bonada, N, Bond, N R, Brintrup, K, et al, University of Zurich, and von Schiller, D

Subjects
Environmental Chemistry river, Atmospheric Science, Global and Planetary Change, stream, 2306 Global and Planetary Change, temporary, 2300 General Environmental Science, 10127 Institute of Evolutionary Biology and Environmental Studies, intermittent, 2304 Environmental Chemistry, 1902 Atmospheric Science, 570 Life sciences, biology, 590 Animals (Zoology), respiration, General Environmental Science
Published
2019
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50. W and Tl M-shell X-ray emission cross sections induced by carbon ions between 2.6 MeV and 5 MeV

Author

Haidra, A., Ouziane, S., Fazinić, Stjepko, Banas, D., Chaves, Christina P., and Reis, Miguel P.

Subjects
M-shell cross section, W, Tl, Carbon ions
Abstract

Considering the importance of ion beam interactions with mater for applied physics in several fields namely in elemental analysis by Particle Induced X-ray Emission (PIXE), during the recent decades many experimental studies on the M-shell X-ray production cross sections have been performed for understanding excitation and ionization of M-shell electrons by impinging charged particles. Although PIXE is usually performed by protons, experimental data on X-ray production by heavier ions is also of practical interest to exploit the fact that Ion Beam Analysis (IBA) methods can be performed simultaneously. Good knowledge of X-ray production with heavier ions would be helpful for simultaneous use of PIXE with heavy-ion analytical techniques, such as ERDA (Elastic Recoil Detection Analysis), NRA (Nuclear Reaction Analysis), AMS (Accelerator Mass Spectrometry), and MeV- SIMS (MeV Secondary Ion Mass Spectrometry). Therefore we have recently started with the systematic study of M-Shell X-ray production induced by medium energy carbon ions from heavy elements in the range between W and Bi [1, 2]. In this work, we have measured particularly Mαβ, Mγ and total M-shell cross sections for tungsten and thallium induced by carbon ions of energy rang 2.6 MeV to 5 MeV on respective thin targets. The obtained new experimental data of Mαβ, Mγ and total M-shell cross section are compared to the theoretical predictions given in the frame work of the models Plane Wave Born Approximation (PWBA) [3], ECPSSR [4] and the Semi-Classical Approximation with united atom (SCA-UA) and separated atom (SCA-SA) correction [5]. References [1] A. Haidra, S. Ouziane, S. Fazini´c, Nucl. Instr. and Meth. B 417 (2018) 26-31. [2] A. Haidra, S. Fazini´c, S. Ouziane, I. Zamboni, D. Banas, Nucl. Instr. and Meth. B (2018) to be published, available online. [3] E. Merzbacher, H.W. Lewis, Encyclopaedia of Physics, S. Flugge (1958), Vol. 34, p166. [4] W. Brandt, G. Lapicki, Phys. Rev. A 23 (1981) 1717-1729. [5] D. Trautmann and T. Kauer, Nucl. Instr. And Meth. B (42), 1989, 449

Published
2019

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