Results 221 to 230 of about 55,018 (263)

Diffusion controlled thermal desorption

Thermochimica Acta, 1976
Abstract A special case of the non-isothermal rate equation is derived for the evaluation of thermal gravimetry data when the measured weight loss from a sheet-like specimen is governed by a diffusion process as opposed to a homogenous chemical reaction.
David L. Miller, Richard H. Wildnauer
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Thermal desorption of quasimolecular ions

Organic Mass Spectrometry, 1981
AbstractThe thermal desorption of [M + Alkali]+ quasimolecular ions from a heated metal surface is reported for some alkali salts of carboxylic acids and mixtures of alkali halides with a crown ether, glucose and adenosine. No quasimolecular ion could be detected from sucrose.
R. Stoll, F. W. Röllgen
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Thermal desorption of oxides on InP

Applied Physics Letters, 1988
The thermal desorption of thin oxide films on n- and p-type InP has been studied by using x-ray photoelectron spectroscopy. It was found that oxides formed on InP could be completely desorbed at 458 °C without causing surface decomposition. The phosphorus and indium oxides desorbed together within 5°. However, heating the oxidized surface to about 453 °
W. M. Lau, R. N. S. Sodhi, S. Ingrey
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Entropy effects in thermal desorption

Surface Science, 1983
Abstract The entropy of thermal desorption has been calculated for a single adatom on a harmonic linear chain using information theoretic expressions for the entropy. As a transition state for the process, in the context of absolute rate theory, cannot be specified, the entropy has been calculated for a direct transition to an unrelaxed desorbed ...
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Analysis of Thermal Desorption Spectra

Journal of Applied Physics, 1969
The behavior of detector signals corresponding to the thermal desorption of gas from a solid surface for integral-order kinetics is investigated with respect to variations of the parameters describing (1) the kinetics of the desorption process itself, and (2) the interaction of the desorbed gas with the vacuum system.
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Thermal excitation: thermal desorption spectroscopy (TDS)

1990
Abstract TDS has been used very extensively, but not as a general analytical tool in the same sense as have XPS or AES. In basic experiments concerned with the study of the reactions between pure gases and clean solid surfaces, TDS is now regarded as an indispensable adjunct to the other techniques used principally in fundamental surface
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Thermal desorption measurement technique

Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, 1991
Practical thermal desorption measurements require an ultrahigh vacuum (UHV) system with a simple method of calibrating the residual gas analyzer for a number of gases. The calibration system should be easy to move between systems. We describe how the gas injection method of Kendall has been used to calibrate an UHV system and present example ...
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Thermal Desorption

2017
Richard J. Ayen, Carl R. Palmer, Carl P. Swanstrom   +2 more
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Thermal desorption analysis:

Journal of Thermal Analysis, 1988
H. Wittkopf, H. -J. Flammersheim, L. Herlitze   +2 more
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Thermal Desorption Of Organic Molecules

2009
The applicability of thermal desorption spectroscopy (TDS) to differentiate between a strongly bound wetting layer and the subsequently formed multilayers of organic thin film is discussed. After describing the fundamentals of TDS, particularly for large organic molecules, several model systems are presented (p-4P on Au(111), p-6P on Au(111), mica(0001)
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