Rok 2023

• Dissolution of Nb-doped hydroxyapatite prepared via low-temperature mechanochemical method: Spectroscopy studies

  Publikacja

  • W. P. Korzeniewski (dawniej: W. Korzeniewski)
  • A. Witkowska

  - NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS - Rok 2023

  Calcium phosphate glass ceramics with nominal hydroxyapatite stoichiometry doped with niobium were synthesized using simple as well as low-temperature mechanochemical method and then in the form of compressed pellet were submitted to the static dissolution process in distilled water for one month. The results of structural analysis, performed mainly on the base of spectroscopic methods such as: infrared absorption spectroscopy,...

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Rok 2019

• Storing Matter’technique in SIMS depth profile analysis

  Publikacja

  • M. Miśnik
  • K. Piotr
  • Z. Aleksander
  • A. Joahim

  - NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS - Rok 2019

  Secondary ion mass spectrometry (SIMS) is a very useful technique for the analysis of layered systems. It is based on the primary ion beam sputtering of solids and mass analysis of the emitted secondary ions. A main limitation of this technique results from the direct quantitative analysis, since the ionization efficiency of a given atom is highly influenced by the neighbouring atoms at the surface. This phenomenon is known as...

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Rok 2017

• Energy shift of the Lβ2 line as an ionization diagnostic for the dense plasma in the PFRP

  Publikacja

  • N. Pereira
  • B. Weber
  • J. Seely
  • E. We¸der
  • K. Słabkowska
  • Ł. Syrocki
  • M. Polasik
  • Ł. Syrocki

  - NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS - Rok 2017

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• Individual contributions of M X-ray line from Cu- and Co-like tungsten ions and L X-ray line from Ne-like molybdenum ions – Benchmarks for new approach to determine the high-temperature tokamak plasma parameters

  Publikacja

  • K. Słabkowska
  • Ł. Syrocki
  • E. Węder
  • M. Polasik
  • Ł. Syrocki

  - NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS - Rok 2017

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• Modeling of soft N, M and L X-ray lines from tungsten relevant to plasma parameters in the WEST tokamak

  Publikacja

  • Ł. Syrocki
  • K. Słabkowska
  • E. Węder
  • J. Starosta-Sztuczka
  • M. Polasik
  • Ł. Syrocki

  - NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS - Rok 2017

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Rok 2015

• Nano-structured Pt embedded in acidic salts of heteropolymolybdate matrices: MS EXAFS study

  Publikacja

  • A. Witkowska
  • S. Dsoke
  • R. Marassi
  • A. DiCicco

  - NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS - Rok 2015

  A structural study of Pt nano-catalysts is presented in the paper. The innovation in the case of the considered catalytic materials resides in the use a meso-microporous inorganic matrix of heteropolyacid salt of composition X2.5H0.5YMo12O40 where X = Rb, Cs and Y = P, Si as a catalyst support. Metallic nanoparticles were created by platinum ions reduction in a hot H2/Argon stream and were mainly located into matrix pores. As the...

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Rok 2008

• Correlation–polarization effects in electron/positron scattering from acetylene: A comparison of computational models

  Publikacja

  • J. Franz
  • F. Gianturco
  • K. Baluja
  • J. Tennyson
  • R. Carey
  • R. Montuoro
  • R. Lucchese
  • T. Stoecklin
  • P. Nicholas
  • T. Gibson

  - NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS - Rok 2008

  Different computational methods are employed to evaluate elastic (rotationally summed) integral and differential cross sections for low energy (below about 10 eV) positron scattering off gas-phase C2H2 molecules. The computations are carried out at the static and static-plus-polarization levels for describing the interaction forces and the correlation–polarization contributions are found to be an essential component for the correct...

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• Polarisation effects in low-energy positron–molecule scattering

  Publikacja

  • J. Franz
  • K. Baluja
  • R. Zhang
  • J. Tennyson

  - NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS - Rok 2008

  The UK molecular R-matrix method has been adapted to treat positron collisions from polyatomic targets. A simple empirical enhancement factor which corrects for the underestimation of electron–positron polarisation and correlation effects in the calculations performed with the static-plus-polarization model at low scattering energies is presented. Application of this model to positron scattering from carbon dioxide at energies...

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Rok 2006

• Annihilation rates of low-energy positron scattering from simple diatomic molecules

  Publikacja

  • J. Franz
  • F. Gianturco

  - NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS - Rok 2006

  We discuss the calculations of Zeff coefficients for a series of diatomic molecules over the range of energies below the positronium formation. During the development of a general code for polyatomic, nonlinear molecules colliding with positrons, it was discovered that the earlier one, employed only for diatomic molecules, had an error. The error is corrected and the corrected results are presented here. We also discuss a way of...

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Rok 2003

• Theoretical Auger and photoionization studies for open shell atoms andions.

  Publikacja

  • S. Fritzsche
  • H. Aksela
  • C. Z. Dong
  • S. Heinasmaki
  • J. E. Sienkiewicz

  - NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS - Rok 2003

  Wykorzystano program komputerowy RATIP do badań własności atomów i jonów o dowolnej konfiguracji. Położono nacisk na obliczenia szeregu własności elektronów Augera i fotojonizacji, aby dokonać porównań z ostatnio wykonywanymi doświadczeniami.

Rok 2002

• Elastic cross-section calculations for electron collisions with XY4 (X=Si,Ge; Y=H, F, Cl, Br, I) molecules

  Publikacja

  • P. Możejko
  • B. Żywicka-Możejko
  • C. Szmytkowski

  - NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS - Rok 2002

  Obliczano elastyczne przekroje czynne dla tetraedrycznych związków krzemu i germanu. Otrzymane wyniki porównano z innymi dostępnymi wynikami obliczeń oraz z danymi doświadczalnymi; dla energii powyżej 100 eV uzyskano zadowalającą zgodność.