Temperature programmed desorption mass spectra of molecule formation studies.

Manicò G.

III - Astrofisica
Aula 32B-3 - Mercoledì 19 h 09:00 - 13:00
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The molecule formation on the surface of Interstellar dust grains is studied by experimental simulations in which reaction partners are deposited on silicate, amorphous carbon and water ice surfaces in UHV chambers. A powerful technique to measure the catalytic efficiency of the surfaces of astrophysical interest consists in performing Temperature Programmed Desorptions (TPD) after depositions at low temperatures. Several methods were used in the past to analyze TPD mass spectra showing advantages and disadvantages. Here we present an in-depth study and suggest improvements.

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