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![Boltzmann plot obtained using the present experimental line intensity I and the gA values taken from Lawler2008 [10] (red squares). The fitted linear function and the 68.3% confidential interval are shown in the solid and dashed lines, respectively. The blue square represents the linear function value at 3.147 eV for obtaining the A value of the 393.863 nm line (see text for details).](publication/358776052/figure/fig2/AS:1127494635786241@1645827077060/Boltzmann-plot-obtained-using-the-present-experimental-line-intensity-I-and-the-gA-values.png)
Boltzmann plot obtained using the present experimental line intensity I and the gA values taken from Lawler2008 [10] (red squares). The fitted linear function and the 68.3% confidential interval are shown in the solid and dashed lines, respectively. The blue square represents the linear function value at 3.147 eV for obtaining the A value of the 393.863 nm line (see text for details).
Source publication
We present a laser induced breakdown spectrum of Er II in the near ultraviolet region. To use the spectrum for the evaluation of the transition probabilities, an alloy target with a low content of Er was used to suppress the self-absorption. From the linearity of the Boltzmann plot obtained by using the sensitivity corrected experimental intensity...
Contexts in source publication
Context 1
... The left side values of Equation (2) obtained from the experimental intensity I and the gA values in Lawler2008 are plotted in Figure 3 as a function of the energy E of the upper level of the transition. The error bars represent the uncertainty obtained considering four contributions: (i) the fitting error, (ii) the statistical uncertainty of the photon counts estimated from the conversion factor from the digital counts to the photon number, (iii) the uncertainty in the radiometric data of the calibration light source, and (iv) the uncertainty in the A values. ...
Context 2
... 393.863 nm line was observed in the present LIBS spectrum, as indicated by the blue arrow in Figure 2d, and the intensity was obtained from the peak area of the fitted Gaussian function shown in the inset. By applying this line to the linear function in Figure 3, as plotted by the blue square, the transition probability A is obtained as 1.2(2) ×10 7 s −1 . The uncertainty was estimated from three contributions: (i) uncertainty in the experimental intensity, (ii) uncertainty in radiometric data of the calibration light source, and (iii) the confidence interval of the linear function obtained from the Boltzmann plot, among which the third contribution is dominant. ...
Citations
This review of 200 references covers developments in ‘Atomic Spectrometry’ published in the twelve months from December 2021 to November 2022 inclusive. It covers atomic emission, absorption, fluorescence and mass spectrometry, but excludes material on speciation and coupled techniques which is included in a separate review. It should be read in conjunction with the previous review¹ and the other related reviews in the series.¹⁻⁶ A critical approach to the selection of material has been adopted, with only novel developments in instrumentation, techniques and methodology being included. After several years of consolidation of research in the area of elemental tagging, with very similar variations on the same themes being published, this has now evolved to include detection at the cellular level. This is largely a result of advances in single particle-ICP-MS and LA-ICP-MS mapping, coupled with multiple tagging approaches. These combined methods are very useful for diagnostics and imaging and perhaps show the way forward for this type of analysis. A more comprehensive assessment of the range of factors affecting the accuracy of isotope ratio determinations of non-radiogenic isotopes has been in evidence. Where corrections could not be made, some studies specified a range of concentration or molarity in which results remained within tolerance. In the future, this type of assessment should lead to more robust uncertainty estimates and potentially reduce the possibility of samples with erroneous deviations in their stable isotopes measurements.
