The signal generation process in the wavelength modulation absorption spectrometry (WMAS) technique, mainly applied to diode lasers, is scrutinized in detail. The basic foundations of the technique, including its partly unique nomenclature and its relation to conventional absorption spectrometry, are review...
Scanning spectrometry has the ability to circumvent these constraints by using a tunable filter to successively capture each wavelength channel. However, for most scanning spectrometers, the resolution-bandwidth limit still exists. The underlying reason is that, for most types of filters, a narrow-...
L. Bai et al., "Study on the wavelength calibration of type III concave grating spectrometry," Chin. Opt. Lett. 2(3), 174-176 (2004).Bai Li,Liao Ning-fang,Li Zhao-jian et al.Study on the wavelength calibration of type III concave grating spectrometry system. Chinese Optics Letters ....
23). We also performed time-of-flight secondary ion mass spectrometry (SIMS) to study the distribution of chemical compositions throughout the film. The distribution profiles of Pb2+, Cs+, FA+, and In+ (as a reference to indicate the interface) were displayed in Supplementary Fig. 24. ...
Differentiation of Mafic Magma in a continental crust-to-mantle transition zone. J. Petrol. 42, 189–206 (2001). Article CAS Google Scholar Abily, B. & Ceuleneer, G. The dunitic mantle-crust transition zone in the Oman ophiolite: Residue of melt-rock interaction, cumulates from high-...
Spectral calibration of the spectrometer system was done using the 633 nm He-Ne laser Rayleigh peak, and its accuracy cross-checked regularly using neon-krypton lamp emissions in the respective wavelength ranges. Peak positions are reproducible within ±1.5 cm−1. Figure 1. (a) Typical laser...
The stable pH range was considered where the fluorescence intensity was within the ± 30% range of the intensity measured at pH= 7.4. * data acquired in this work. FEF=fluorescence enhancement factor, GM=Goeppert-Mayer unit. Next, the ion-selectivity, pH sensitivity, photostability, reversi...
The position and wavelength of the airglow lines are indicated by vertical lines. Bottom panel: The difference of the spectra taken at the two locations. The fit of the airglow lines is subtracted before calculating the difference. The possible lines of artificial lights are marked on the ...
Spectral windows permit the observation of Venus surface thermal emission through the cloud deck. Surface thermal emission has been detected in windows within the wavelength range of 0.7 to 1.2 μm (Lecacheux et al.1993; Meadows and Crisp1996; Baines et al.2000; Wood et al.2022). Surface th...
The concentration of the eluting compounds was monitored by a diode-array detector at a wavelength of 281 nm. The method was evaluated for several validation parameters, including selectivity, accuracy (confidence intervals < 0.05%), repeatability, and intermediate precision. The limit of detection (...