Calculations of the surface temperature rise and desorption temperature in laser-induced thermal desorption

D. B. Burgess, Peter C Stair, E. Weitz

Research output: Contribution to journalArticle

129 Citations (Scopus)

Abstract

The laser-induced thermal desorption (LITD) process is discussed with reference to measurements of the translational energies (temperatures) of desorbed molecules. We present simple expressions which predict both the surface temperature rise for a laser-heated surface and the desorption temperature in LITD. We show that these approximations are excellent descriptions of the laser heating and LITD processes. These expressions are convenient alternatives to numerical solutions of the heat conduction and desorption rate equations using the actual shape of a laser pulse and specific combinations of kinetic parameters.

Original languageEnglish
Pages (from-to)1362-1366
Number of pages5
JournalJournal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
Volume4
Issue number3
DOIs
Publication statusPublished - 1986

Fingerprint

Thermal desorption
surface temperature
Desorption
desorption
Lasers
lasers
Laser heating
Temperature
temperature
Kinetic parameters
Heat conduction
laser heating
Laser pulses
conductive heat transfer
Molecules
kinetics
pulses
approximation
molecules

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

Cite this

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AB - The laser-induced thermal desorption (LITD) process is discussed with reference to measurements of the translational energies (temperatures) of desorbed molecules. We present simple expressions which predict both the surface temperature rise for a laser-heated surface and the desorption temperature in LITD. We show that these approximations are excellent descriptions of the laser heating and LITD processes. These expressions are convenient alternatives to numerical solutions of the heat conduction and desorption rate equations using the actual shape of a laser pulse and specific combinations of kinetic parameters.

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