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Applied Optics

Applied Optics


  • Vol. 36, Iss. 27 — Sep. 20, 1997
  • pp: 7037–7045

Sensitive measurement of adsorption dynamics with nonresonant gas phase photoacoustics

Jes Henningsen and Nikolaj Melander  »View Author Affiliations

Applied Optics, Vol. 36, Issue 27, pp. 7037-7045 (1997)

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A nonresonant photoacoustic cell, excited by 10-µs CO2 laser pulses, is compared with conventional resonant cells excited with modulated cw radiation. By combining high sensitivity with small volume and small surface area, the nonresonant cell shows superior performance in measurements of time-dependent concentrations. The potential of the cell is illustrated by measurements of the time evolution of adsorption and desorption of ammonia molecules from surfaces of quartz and stainless steel.

© 1997 Optical Society of America

Original Manuscript: September 23, 1996
Revised Manuscript: January 15, 1997
Published: September 20, 1997

Jes Henningsen and Nikolaj Melander, "Sensitive measurement of adsorption dynamics with nonresonant gas phase photoacoustics," Appl. Opt. 36, 7037-7045 (1997)

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