نتایج جستجو برای: atomic absorption spectra

تعداد نتایج: 302382  

2017
Luca Quaroni Katarzyna Pogoda Joanna-Wiltowska Zuber Wojciech Kwiatek

Structures in Eukaryotic Cells with Atomic Force Microscopy Infrared Spectroscopy. Luca Quaroni,* Katarzyna Pogoda, Joanna-Wiltowska Zuber, Wojciech Kwiatek Department of Experimental Physics of Complex Systems, Institute of Nuclear Physics, Polish Academy of Sciences, PL-31342, Kraków, Poland Abstract Atomic Force Microscopy – Infrared (AFM-IR) spectroscopy allows spectroscopic studies in the ...

2006
Junko Yamagata

We considered the kaon absorption from atomic states into nucleus. We found that the nuclear density probed by the atomic kaon significantly depends on the kaon orbit. Then, we reexamined the meanings of the observed strengths of one–body and two–body kaon absorption, and investigated the effects to the formation spectra of kaon bound states by in–flight (K−, p) reactions. As a natural conseque...

Journal: :Journal of synchrotron radiation 2001
R Preseren A Kodre I Arcon M Borowski

K edge absorption spectra of elements from Ge to Br in gaseous hydrides were measured at the BM 29 station of ESRF with noise level as low as 2x10(-5), so far achievable only on noble gases. The dominant feature of the spectra is the atomic background similar to that of Kr and comparable to it in the quality of detail. Onto the background, a smooth weak EXAFS signal due to the hydrogen neighbor...

2008
Wynn C. G. Ho Dong Lai

We study several effects that influence the strength of the proton cyclotron and atomic features in the thermal spectra of magnetic neutron stars. We show that it is possible for vacuum polarization to strongly suppress the spectral lines when the magnetic field B & 10 G. For weaker fields (B . 7× 10 G), the surface spectrum is unaffected by vacuum polarization; thus the proton cyclotron absorp...

2014
Piter S. Miedema Philippe Wernet Alexander Föhlisch

Total and partial fluorescence yield (PFY) L-edge x-ray absorption spectra differ from the transmission x-ray absorption spectra (XAS) through state-dependent fluorescence yield across the XAS. For 3d to 3d in octahedral symmetry we apply simulations of PFY and XAS and show how the atomic 2p3d Coulomb exchange parameter Gpd governs the differences in the L3/(L2+L3) branching ratio between PFY a...

2003
M. M. Grush J. Chen T. L. Stemmler S. J. George C. Y. Ralston R. T. Stibrany A. Gelasco G. Christou S. M. Gorun J. E. Penner-Hahn S. P. Cramer

The first Mn L-edge absorption spectra of a Mn metalloprotein are presented in this paper. Both reduced and superoxidized Mn catalase have been examined by fluorescence-detected soft X-ray absorption spectroscopy, and their Mn L-edge spectra are dramatically different. The spectrum of reduced Mn(II)Mn(II) catalase has been interpreted by ligand field atomic multiplet calculations and by compari...

2013
Bushra Mohamed Omer

Thin films of a conjugated polymer Poly [2-methoxy-5-(3’,7’-dimethyloctyloxy)-1,4-phenylenevinylene] (MDMO-PPV) were prepared from chloroform, 1,2dichlorobenzene and toluene solutions by spin coating technique on quartz substrates. Absorption and photoluminescence (PL) spectra of the polymer thin films prepared from different solvents were measured. The UV-vis absorption and PL spectra of MDMO-...

2003
Gerhard Herzberg J. W. T. Spinks

T HE present edition of this work contains a number of corrections and additions; Birge's new set of fundamental constants has been adopted throughout, and various tables, especially the table of ionization potentials, have been brought up to date. The author is indebted to Professor J. W. Ellis of the University of California at Los Angeles for a list of errors and corrections ; several of the...

1-butyl-3-methyl imidazolinium hydroxide ionic liquid (BMIm[OH]) is loaded on commercial low surface area Pd-Ag/α-Al2O3 solid ‎catalyst to enhance higher selectivity of acetylene partial hydrogenation. Different experimental techniques such as atomic absorption spectroscopy, surface area measurement and gas chromatography have been utilized to characterize chemical, structural and catalytic pro...

2008
Ehud Behar Hagai Netzer

The HULLAC atomic code is used to compute wavelengths and oscillator strengths for the 1s np inner-shell absorption lines in Li-like to F-like ions of neon, magnesium, aluminum, silicon, sulfur, argon, calcium, and iron. Many of these lines are expected to be observed in Chandra and XMM-Newton highresolution X-ray spectra of active galaxies. The new atomic data are incorporated in the ION code ...

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