Spectrochimica Acta. Part B, Atomic Spectroscopy

Journal: Spectrochimica Acta. Part B, Atomic Spectroscopy

Abbreviation

Spectrochim. acta, B At. spectrosc.

Publisher

Elsevier

ISSN

0584-8547

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Publications 1 - 10 of 34

Excitation and ionization of a diagnosis gas in front of the flexible μ tube plasma and in a diagnosis tube
Song, Hao; Tian, Caiyan; Speicher, Luisa; et al. (2024)
Spectrochimica Acta. Part B, Atomic Spectroscopy
The noble gases Helium, Argon, Krypton and even Xeon have been applied as discharge gases for the flexible μ tube plasma (FμTP) with comparable ionization efficiencies. It was assumed that a temporally and spatially limited potential plays a major role in the generation of reactant ions responsible for protonation in the surrounding air. However, the excited and ionized species of ambient air cannot be detected directly by emission spectroscopy because there is no known emission wavelength within the detectable range. In this work, a diagnosis gas was introduced as a substitute for the surrounding air to understand the excitation and ionization outside the discharge capillary. It was found that with Ne, Ar, Kr, Xe as plasma gases the diagnosis gas He can be excited during the positive half cycle. The emission of He 706 nm and N2+ 391 nm propagate with and against diagnosis gas flow directions in case of He and Ne driven plasmas. In case of Ar, Kr, and Xe driven plasmas, the emission of both species mainly develops against the diagnosis gas and the shapes of He 706 nm are wide. Further on, the diagnosis gas He is also excited even though there is a glass wall between the plasma gas flow and diagnosis gas flow. These findings demonstrate that the transient potential is responsible for the excitation of the diagnosis gas, not penning ionization or charge transfer between discharge plasma and diagnosis gas.
Isotope fractionation during ion beam formation in multi-collector inductively coupled plasma mass spectrometry
Kivel, Niko; Günther-Leopold, Ines; Vanhaecke, Frank; et al. (2012)
Spectrochimica Acta. Part B, Atomic Spectroscopy
Metallurgical and chemical characterization of copper alloy reference materials within laser ablation inductively coupled plasma mass spectrometry
Walaszek, Damian; Senn, Marianne; Faller, Markus; et al. (2013)
Spectrochimica Acta. Part B, Atomic Spectroscopy
Femtosecond laser ablation inductively coupled plasma mass spectrometry
Garcia, Carmen C.; Wälle, Markus; Lindner, Helmut; et al. (2008)
Spectrochimica Acta. Part B, Atomic Spectroscopy
Feasibility of depth profiling of Zn-based coatings by laser ablation inductively coupled plasma optical emission and mass spectrometry using infrared Nd
Hrdlička, Aleš; Otruba, Vítĕzslav; Novotný, Karel; et al. (2005)
Spectrochimica Acta. Part B, Atomic Spectroscopy
Laser ablation and arc/spark solid sample introduction into inductively coupled plasma mass spectrometry
Günther, Detlef; Jackson, Simon E.; Longerich, Henry P. (1999)
Spectrochimica Acta. Part B, Atomic Spectroscopy
Elucidation of discharge mechanisms in He- and Ar-flexible μ-tube plasmas by temporally and spatially resolved plasma optical emission phoresis spectroscopy
Song, Hao; Tian, Caiyan; Speicher, Luisa; et al. (2024)
Spectrochimica Acta. Part B, Atomic Spectroscopy
A Helium- and Argon-flexible μ-tube plasma (FμTP) driven by a square wave high voltage were investigated by means of temporally and spatially resolved spectroscopy to characterize the discharge mechanisms. These two discharge gases show different discharge behavior in the same FμTP-configuration. The mixtures of different concentration of propane in Ar were used as discharge gases to confirm the role of Ar⁺ in an Ar-FμTP by tuning the discharge behavior. It was demonstrated that, N₂⁺ are mainly responsible for the excitation and ionization and only small amount of He⁺ are produced in a He-FμTP, whereas Ar-FμTP lives from Ar⁺. These ions as well as excited species do not propagate beyond the capillary during the negative half cycle, resulting in a negligible contribution for protonation in this half cycle. The present study proposes a new method to data analysis, Plasma Optical Emission Phoresis Spectroscopy, which allows to distinguish noble gas ions from excited noble gas species.
High-precision mapping of fluorine and lithium in energy materials by means of laser-induced XUV spectroscopy (LIXS)
Qu, Di; Ohannessian, Natacha; Wyder, Corino; et al. (2021)
Spectrochimica Acta. Part B, Atomic Spectroscopy
Laser-induced breakdown spectroscopy (LIBS) is a well-established elemental analysis method, thanks to negligible sample preparation, rapid analysis, and a spatially resolved sensitivity down to trace level, in any kind of matrix. State-of-the-art LIBS is operated in the optical spectral range (UV-VIS). Unfortunately, the measurement precision is limited by the moderate stability and repeatability of the plasma emission. The detection and sensitivity to crucial elements such as light elements and halogens are also limited. This is particularly critical for inhomogeneous materials where signal fluctuation is related to the spatial elemental distribution. To overcome these disadvantages specific, LIBS techniques arrangement are often required. Laser-induced XUV Spectroscopy (LIXS) has some intrinsic advantages for overcoming some of the above mentioned limitations and it can support the spectroscopic information collected in the UV-VIS range.
Application of a particle separation device to reduce inductively coupled plasma-enhanced elemental fractionation in laser ablation-inductively coupled plasma-mass spectrometry
Guillong, Marcel; Kuhn, Hans-Rudolf; Günther, Detlef (2003)
Spectrochimica Acta. Part B, Atomic Spectroscopy
Microscale analysis of metal uptake by argillaceous rocks using positive matrix factorization of microscopic X-ray fluorescence elemental maps
Osan, Janos; Keri, Annamaria; Breitner, Daniel; et al. (2014)
Spectrochimica Acta. Part B, Atomic Spectroscopy

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Journal: Spectrochimica Acta. Part B, Atomic Spectroscopy

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