"Cold reactive collisions between neutral molecules and cold, trapped ions," by Lorenzo Petralia (Physical and Theoretical Chemistry Laboratory, UK)

Date: 
Thursday, July 6, 2017 - 1:30pm
Series: 
AMO Seminars

AMO Seminar

Physics & Astronomy Building (PAB) 4-330
Thursday, July 6, 2017
1:30PM

Guest Speaker: Lorenzo Petralia (Physical and Theoretical Chemistry Laboratory, UK) 

Talk Title: "Cold reactive collisions between neutral molecules and cold, trapped ions"

Abstract:

With the ultimate goal of exploring the quantum dynamics of ion-neutral reactions in cold conditions, we employ two sources of cold neutral molecules in combination with ions held in a linear ion trap and cooled by lasers. The two sources of cold neutral molecules we adopt are a Stark decelerator and a quadrupole guide velocity selector combined with a buffer gas cooling system [1].

Reactions are investigated by monitoring the change in the morphology of Coulomb crystals over time and by performing time-of-flight mass spectrometry measurements [2-4]. In this way, we can examine the progress of ion-molecule reactions within Coulomb crystals. We also report on the extent to which the spatial orientation of cold polar molecules can be controlled as molecules pass through various electric field regions of the experimental apparatus involving the quadrupole guide velocity filter [5].

References

[1] B. R. Heazlewod and T. P. Softley, Annu. Rev. Phys. Chem., 66 , 475 (2015).

[2] S. Willitsch et al., Phys. Rev. Lett., 100, 043203 (2008).

[3] N. Deb et al., Phys. Rev. A, 91, 033408 (2015).

[4] K. A. E. Meyer et al., J. Phys. Chem. A, 119, 12449 (2015).

[5] E. W. Steer et al., J. Mol. Spectrosc., 332, 094 (2017).

Event Attachments: 
Location: 
PAB 4-330