Figure 1

(a) Laser plasma absorption spectrum of ferrocene in transmission mode. Included are emission lines and absorption edges of metal filters (see text). Dashed line ($I_0$) is the fitted spectrum without the sample. (b) Difference between measured spectrum ($I_{\mathrm{d}}$) and the reference fit ($I_{\mathrm{f}}$) of all involved materials, normalized to the Poisson error. Areas of emission lines and fine structure modulation (gray) were excluded. (c) A histogram of the normalized difference, with a Gaussian 1 $\sigma$ curve superimposed. (d) Absorption fine structure of ferrocene, normalized to a measured background spectrum and the edge jump with indicated Poisson-limited error bars. The gray line is a synchrotron reference measurement from the same compound. (d1) $k\chi$ presented in $k$ space to show the quality of the data. The error bars were generated using the statistical fluctuation expected for the number of samples per bin. (e) $|\chi |$ as function of $R$ from the data (black line), single path fit (dotted black line) and synchrotron comparison data (gray line). Curves are offset vertically and the zero levels are marked; for details see text. (f) Additional calibration lines measured prior to the absorption spectrum; the Mn-$K\alpha$ splitting is clearly resolvable as shown in (g).Reuse & Permissions