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Accueil > English > Ressources > Experiments

Cold Ions Trap (SDM)

par Cynthia JULIEN - publié le , mis à jour le

Vue générale de l’expérience Trappe à Ions Froids

This experiment is designed to characterize the optical properties of molecular ions. -Specifically, it characterizes the electronic spectrum and the fragmentation processes after the absorption of UV or visible photon. For example, this experience allows us to understand how and why biological molecules (proteins, DNA) are resistant to the deleterious effects of ultraviolet light. -This experience is built around a cooled ion trap in which are injected ions from an electrospray source. The ions are trapped, cooled to a few K then fragmented by tunable lasers. Resulting fragments are analyzed by a time of flight mass spectrometer.

Trappe à ions sur son cryostat qui sert à la refroidir