scholarly journals Experimental Determinations of Electron Inelastic Mean Free Paths in Silver, Gold, Copper and Silicon from Electron Elastic Peak Intensity Ratios

2002 ◽  
Vol 9 (3) ◽  
pp. 285-290 ◽  
Author(s):  
S. Tanuma ◽  
S. Ichimura ◽  
K. Goto ◽  
T. Kimura
Keyword(s):  
Elastic Peak ◽  
Peak Intensity ◽  
Intensity Ratios

Evaluation of the inelastic mean free path (IMFP) of electrons in polyaniline and polyacetylene samples obtained from elastic peak electron spectroscopy (EPES)

Open Physics ◽  
2007 ◽  
Vol 5 (2) ◽  
Author(s):  
György Gergely ◽  
Miklós Menyhard ◽  
Attila Sulyok ◽  
Sándor Gurban ◽  
Beata Lesiak ◽  
...  
Keyword(s):  
Free Path ◽  
Cross Sections ◽  
Electron Spectroscopy ◽  
Surface Composition ◽  
Mean Free Path ◽  
Elastic Peak ◽  
Peak Intensity ◽  
Intensity Ratios ◽  
Scattering Cross Sections ◽  
Inelastic Mean Free Path

AbstractThe inelastic mean free path (IMFP) of electrons was determined experimentally for selected polyaniline and polyacetylene samples with Ag and Ni references using elastic peak electron spectroscopy (EPES). The surface composition was determined by XPS and density by helium pycnometry. The high resolution hemispherical ESA-31 and ADES-400 spectrometers were used for measurements in the energy range E = 0.5–3.0 keV and E =0.4 − 1.6 keV, respectively. The integrated elastic peak intensity ratios for sample and reference were calculated using the Monte Carlo (MC) algorithm based on the electron elastic scattering cross-sections database NIST SRD64 version 3.1 and applying TPP-2M IMFPs for polymers. Surface excitation parameters (SEP) and material parameters (ach) for polymers were determined, using the model of Chen, from comparison of measured and MC calculated elastic peak intensity ratios. These corrections proved to be efficient in decreasing the percentage deviations between the obtained IMFPs and the TPP-2M formula IMFPs. The elastic peak of hydrogen was observed in the EPES spectra of polymers. The experimental contribution of the hydrogen to the total elastic peak was 0.58%, while this value obtained from the MC simulations was 1.98%.

Angular variations in core-level XPS peak intensity ratios from single-crystal solids

1979 ◽  
Vol 89 (1-3) ◽  
pp. 64-75 ◽  
Author(s):  
Stephen Evans ◽  
Elizabeth Raftery ◽  
John M. Thomas
Keyword(s):  
Single Crystal ◽  
Core Level ◽  
Peak Intensity ◽  
Intensity Ratios

Surface composition of alloys derived from elastic peak intensity

2002 ◽  
Vol 507-510 ◽  
pp. 895-899 ◽  
Author(s):  
L. Kövér ◽  
J. Tóth ◽  
D. Varga ◽  
B. Lesiak ◽  
A. Jablonski
Keyword(s):  
Surface Composition ◽  
Elastic Peak ◽  
Peak Intensity

scholarly journals Vibrational exciton delocalization precludes the use of infrared intensities as proxies for surfactant accumulation on aqueous surfaces

2021 ◽  
Author(s):  
Kimberly Anne Carter-Fenk ◽  
Kevin Carter-Fenk ◽  
Michelle E. Fiamingo ◽  
Heather C Allen ◽  
John M Herbert
Keyword(s):  
Intermolecular Interactions ◽  
Vibrational Spectroscopy ◽  
Molecular Organization ◽  
One Dimensional ◽  
Peak Intensity ◽  
Infrared Intensities ◽  
Molecular Information ◽  
Intensity Ratios ◽  
Aqueous Surfaces

Surface-sensitive vibrational spectroscopy is a common tool for measuring molecular organization and intermolecular interactions at interfaces. Peak intensity ratios are typically used to extract molecular information from one-dimensional spectra but...

scholarly journals Identification of Asbestos Using Laser-Induced Breakdown Spectroscopy: A Viable Alternative to the Conventional Approach?

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
David M. Benton
Keyword(s):  
Visible Region ◽  
Optical Emission ◽  
Rapid Analysis ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Peak Intensity ◽  
Laser Induced Breakdown ◽  
Intensity Ratios ◽  
Speed Of Analysis ◽  
Principal Elements

Laser-induced breakdown spectroscopy has been performed on isolated samples of six types of asbestos—Chrysotile, Crocidolite, Amosite, Anthophyllite, Actinolite, and Tremolite—with analysis of optical emission in the visible region of the spectrum. The principal elements of Mg, Fe, Si, Na, and Ca have all been identified. By examining peak intensity ratios of these elements it is possible to identify the type of asbestos under examination solely from internal examination of the sample spectra. LIBS offers some significant advantages of speed of analysis and removal of subjectivity with potential for on-site rapid analysis.

Effective Orientation Control of Pb(Zr0.4Ti0.6)O3 Thin Films Using A New Ti/Pb(Zr0.4Ti0.6)O3 Seeding Layer

2003 ◽  
Vol 784 ◽  
Author(s):  
B. K. Moon ◽  
O. Arisumi ◽  
K. Hornik ◽  
R. Bruchhaus ◽  
H. Itokawa ◽  
...  
Keyword(s):  
Seed Layer ◽  
Perovskite Phase ◽  
Pyrochlore Phase ◽  
Total Thickness ◽  
Seeding Layer ◽  
Pzt Film ◽  
Peak Intensity ◽  
Polarization Saturation ◽  
Intensity Ratios ◽  
Seed Layers

ABSTRACTThe effect of thin Ti/PbZr0.4Ti0.6O3 seed layers on the properties of PbZr0.4Ti0.6O3 (PZT) capacitors has been investigated. The seed layer is based on a bi-layer of thin Ti and thin PZT with a total thickness ranging from 10 to 25 nm, which was deposited on Ir/Pt or Ir/IrO2/Pt by sputtering. After crystallization of the seed layers the main 130-nm-thick PZT film was deposited and crystallized. As a result, a highly preferred (111)-orientation of the PZT was obtained on a 10-nm-thick seed layer, where the peak intensity ratios of (111)/{100} and (111)/{110} are about 100 and 20, respectively. The 10-nm-thick seed forms a pyrochlore phase with a very smooth surface, where the formation of the pyrochlore phase is attributed to Pb diffusion, resulting in a Pb deficient stoichiometry. The seed layer transformed to the perovskite phase during the main PZT crystallization. It is shown that an IrO2 layer beneath the Pt can prevent Pt layer degradation related to the volume expansion due to the oxidation of Ir during the main PZT crystallization. Capacitors with the 10-nm-thick seed layer fabricated on the Ir/Pt and Ir/IrO2/Pt substrates showed typical 2 Pr values of 44.0 μC/cm2 and 41.2 μC/cm2, respectively. The voltage found for 90%-polarization saturation is about 3.0 V, and the capacitors are fatigue-free at least up to 1010 switching cycles.

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