1992
DOI: 10.1116/1.577810
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Temperature programming for isothermal desorption rate measurements

Abstract: We describe a digital feedforward/feedback controller for the implementation of rapid changes in the temperature of a small, resistively heated metal adsorbent in ultrahigh vacuum. The feedforward loop is based on a second-order model of the system's thermal response, modified by inclusion of a time delay to account for the characteristic time for heal conduction in the adsorbent, and the feedback loop includes proportional and derivative actions. These features allow the temperature of a nickel single crystal… Show more

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Cited by 7 publications
(1 citation statement)
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“…When attempting to assess the correctness of a chemical model with the aid of kinetic simulation of a temperature programmed reaction, there are significant benefits in using multiple heating rates and/or initial coverages; 21-22, 33-34, 46, 48-49, 56-59 or using temperature programs more complex than a linear temperature ramp. 22,[57][58][60][61][62][63][64]…”
Section: Productionmentioning
confidence: 99%
“…When attempting to assess the correctness of a chemical model with the aid of kinetic simulation of a temperature programmed reaction, there are significant benefits in using multiple heating rates and/or initial coverages; 21-22, 33-34, 46, 48-49, 56-59 or using temperature programs more complex than a linear temperature ramp. 22,[57][58][60][61][62][63][64]…”
Section: Productionmentioning
confidence: 99%