PIGE analysis of sodium in thin aerosol samples
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Cited by (21)
External beam normalization measurements using atmospheric argon gamma rays
2020, Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and AtomsCitation Excerpt :Similarly, measuring the low-energy (2.96 KeV) Ar x-rays in air requires both a thin-window x-ray detector and an estimation of the detection efficiency through the air gap. For example, one case where none of these methods were particularly useful in reducing beam intensity uncertainties was the use of ion beam analysis as a viable screening technique for environmental toxins, and a rapid analysis of targets that has been established for this purpose ex vacuo [13–16]. Accurate analysis of samples and standards requires precision monitoring of beam currents during the live run window, but a simultaneous charge integration is not always possible due to the wide array of non-conducting thin and thick targets measured [17–19].
Measurement of proton induced γ-ray emission cross sections on Na from 1.0 to 4.1 MeV
2019, Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and AtomsCitation Excerpt :Accurate and reliable values of the cross sections for prompt γ-ray emission are needed for quantitative PIGE analysis not relying on the use of reference standards [7]. Several papers have been published, also in recent years, on the measurements of proton induced γ-ray emission on Na, both as total [8] or differential cross section [9], or thin target yield [4,10–12], in the proton energy range suitable for PIGE analysis, up to several MeV. Whereas for proton beam energy up to 2.4 MeV an evaluation of the 23Na(p,p′γ)23Na cross section has been recently accomplished [13], for higher energies only one experimental data set [9] is actually available in the literature; however this differential cross-section was measured with an energy step of typically 20 keV, largely exceeding the energy loss of the proton beam in the employed target (from 3 to 5 keV), thus not reproducing adequately well some resonances and possibly missing some fine structures in the cross section.
Proton elastic scattering and proton induced γ-ray emission cross-sections on Na from 2 to 5 MeV
2008, Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and AtomsCitation Excerpt :Very few data of interest for application of proton elastic backscattering analysis on sodium were found in the literature and in nuclear databases [1–4]; moreover, all data appear in graphical form in the original references and are anyway limited to 3.5 MeV proton energy. The 23Na(p,p′γ)23Na and 23Na(p,α′γ)20Ne reactions, yielding suitable prompt γ-rays of 440, 1634 and 1636 keV, have been studied in the past in the proton energy range 1.0–4.5 MeV [5–8], but no absolute cross-section data were given, apart in the work from Mateus et al. [8] which is anyway limited to 2.4 MeV proton energy. Therefore, in this paper we studied the differential cross-sections for proton elastic scattering and proton induced γ-ray emission reactions on sodium in the energy region from 2 to 5 MeV, with the aim of providing basic data for practical applications of BS and PIGE to sodium analysis.
Quantification of sodium in ancient Roman glasses with ion beam analysis
2008, Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and AtomsCitation Excerpt :All these facts make quite difficult Na depth profiling in glasses using RBS even for atomic concentrations of Na higher than 10%. A technique like PIGE [12–15], which is in principle non-destructive, can be used for profiling the light elements composition in glass. We have determined the profile of sodium concentration in a few cases of V century AD Roman glasses recovered in different conservation states at the site of San Martino di Ovaro in Italy [16,17] to describe a quantification technique and to make some considerations on the combined use of PIXE and PIGE for the non destructive analysis of ensembles of such kind of objects.
PIXE, PIGE and ion chromatography of aerosol particles from northeast Amazon Basin
1998, Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and AtomsPhoton-tagged nuclear reaction analysis for trace element determination
1997, Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms