title: A compact low-temperature single crystal adsorption calorimetry setup for measuring coverage dependent heats of adsorption at cryogenic temperatures.
abstract: Here we present the modification of an already existing Single Crystal Adsorption Calorimetry (SCAC) apparatus which has been extended by a compact cooling system to measure the coverage dependent heats of adsorption of gaseous compounds on thin metal substrates in a temperature range from 80 K to 430 K. The setup is characterized and its performance is tested by studying the adsorption of CO on Pt(111) at 150 K and 300 K. Coverage dependent sticking probabilities and heat of adsorption measurements are compared to previous experimental and theoretical studies proving the reliability of our compact low-temperature-SCAC setup.
authors.affiliation: Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, TU Darmstadt, Alarich-Weiss-Straße 8, 64287 Darmstadt, Germany.
authors.forename: Peter
authors.initials: P
authors.lastname: Hörtz
authors.affiliation: Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, TU Darmstadt, Alarich-Weiss-Straße 8, 64287 Darmstadt, Germany.
authors.forename: Rolf
authors.initials: R
authors.lastname: Schäfer