A Theoretical Study for the Rotation Excitation Cross Section of the Diatomic Molecules with Atoms and the Resonance Structure in the Photoionization of the Ion Ca~+
With an atomic beam apparatus and two lasers at λ1 = 852.1nm and λ2=510 nm, the Cs atoms are excited to high Rydberg states via a two-step process. The Stark effect of the Rydberg Cs atom has been experimentally studied in the range of external field 0-600 V/cm, the map of the Stark spectra reveal profound "l-mixing" and "n-mixing" of the Stark sublevels.
The values of activation energy Q in Z factor expression were regressed to be 322.3 and 351.6 kJ/mol for TiAlMnNb and TiAlMnNbB alloys, respectively, suggesting that the tensile plastic deformation at peak stress is controlled by an atomic diffusion process in nature.
The contents of inorganic elements Ca,Mg,Fe,Zn,Mn,Cu,Cr,Cd,Ni and Co in Urtica angustifolia were determined by flame atomic absorption spectrophotometry.
This paper describes a simple,rapid and accurate method for determination of trace calcium in NT-P100HT high temperature alloy by N_2O-C_2H_2 flame atomic absorption spectroscopy.
Based on the property that energy of most atoms is highly concentrated, an algorithm is proposed to fast reconstruct an image from atoms' parameters by limiting atom reconstruction calculating within the atom energy concentrating area.
An advantage of DNB is that it is suitable for the separation of the basic compounds containing nitrogen atoms without a capped process because the spacer containing nitrogen atoms can shield the residual silanols from DNB.
Here, for the sake of modeling the HRIRs more truthfully, we consider choosing optimal time-frequency atoms from redundant dictionary to decompose this kind of signals of HRIRs and achieve better results than all the previous models.
Results indicate that, after atoms are emitted from an atomic oven, the longer the atoms move, the worse the distribution of the atomic beam shows, regardless the laser cooling is taken or not.
After filtration, the solid mass consisting of nickel complex and naphthalene was dissolved in 5 mL of dimethylformamide, and the metal was determined using a flame atomic absorption spectrometer at a wavelength of 232 nm.
A microcolumn of alumina modified with sodium dodecyl sulfate (SDS) and 1-(2-pyridylazo)-2-naphthol (PAN) was prepared for the preconcentration of trace nickel from water samples for a flame atomic absorption spectrometry (FAAS) determination.