Experimental and theoretical approaches for determining the K-shell fluorescence yield of carbon

Autor: Philipp Hönicke, Rainer Unterumsberger, Nils Wauschkuhn, Markus Krämer, Burkhard Beckhoff, Paul Indelicato, Jorge Sampaio, José Pires Marques, Mauro Guerra, Fernando Parente, José Paulo Santos

Publikováno v: Radiation Physics and Chemistry

The knowledge of atomic fundamental parameters, such as the fluorescence yields with low uncertainties, is of decisive importance in elemental quantification involving X-ray fluorescence analysis techniques. However, especially for the low-Z elements

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::70e96d58386b6b1d4811c2ccc20dbfdc
https://doi.org/10.1016/j.radphyschem.2022.110501

Interaction of nanoparticle properties and X-ray analytical techniques

Autor: Burkhard Beckhoff, Saeed Gholhaki, Quanmin Guo, Philipp Hönicke, Beatrix Pollakowski-Herrmann, Yves Kayser, Richard E. Palmer, Rainer Unterumsberger

In this work, Pt-Ti core-shell nanoparticles (NP) of 2 nm to 3 nm in size and 30000 u \pm 1500 u as specified single particle mass, deposited on flat silicon substrates by means of a mass-selected cluster beam source, were used for the investigation

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9a8bee8d61bd947abb71a4e4b55bf266
https://cronfa.swan.ac.uk/Record/cronfa54503

Accurate experimental determination of gallium K- and L3-shell XRF fundamental parameters

Autor: Malte Wansleben, Burkhard Beckhoff, Matthias Müller, Rainer Unterumsberger, Philipp Hönicke, Julien L. Colaux, Chris Jeynes

Publikováno v: COLAUX, JULIEN, Unterumsberger, R, Hönicke, P, Jeynes, C, Wansleben, M, Müller, M & Beckhoff, B 2018, ' Accurate experimental determination of gallium K-and L3-shell XRF fundamental parameters ', Journal of Analytical Atomic Spectrometry, vol. 33, no. 6, 10.1039/c8ja00046h, pp. 1003-1013 . https://doi.org/10.1039/c8ja00046h

The fluorescence yield of the K- and L3-shell of gallium was determined using the radiometrically calibrated (reference-free) X-ray fluorescence instrumentation at the BESSY II synchrotron radiation facility. Simultaneous transmission and fluorescenc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f7eeb699a1afacef0d16c8180b058771
https://doi.org/10.1039/c8ja00046h

Resonant x-ray emission and valence-band lifetime broadening in LiNO3

Autor: Rainer Unterumsberger, Matthias Müller, Burkhard Beckhoff, John Vinson, Terrence Jach

Publikováno v: Physical Review B. 100

X-ray absorption and resonant inelastic x-ray scattering measurements are carried out on lithium nitrate LiNO$_3$. The $\sigma$ orbitals around the nitrogen atoms exhibit a large lifetime effect. Experimentally, this is manifest as an apparent weaken

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::32c28b92b04de3cac79260e517e1eee0
https://doi.org/10.1103/physrevb.100.085143

Experimental determination of the x-ray atomic fundamental parameters of nickel

Autor: J-Cl Dousse, B. Beckhoff, Yoshiaki Ito, Matthias Müller, M-C Lépy, Sei Fukushima, M Yamashita, Rainer Unterumsberger, Joanna Hoszowska, Philipp Hönicke, Y. Ménesguen, Wojciech Błachucki

Publikováno v: Metrologia
Metrologia, 2018, 55, pp.56-66. ⟨10.1088/1681-7575/aa9b12⟩
Metrologia, IOP Publishing, 2018, 55 (1), pp.56-66. ⟨10.1088/1681-7575/aa9b12⟩

International audience; The x-ray atomic properties of nickel (Ni) were investigated in a unique approach combining different experimental techniques to obtain new, useful and reliable values of atomic fundamental parameters for x-ray spectrometric p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::04f865e23dfb909fef3045dee0b0c07c
https://cea.hal.science/cea-01765029