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SUMMARY:Formation and Dissociation of Hydrocarbons Under Interstellar Condi
 tions
LOCATION:Chemistry A101
TZID:America/Denver
DTSTART:20241003T160000
UID:2026-05-05-18-16-43@natsci.colostate.edu
DTSTAMP:20260505T181643
Description:About the Seminar:\n\nHydrocarbons of all shapes and sizes are 
 found throughout the various stages of star- and planet formation. Recentl
 y\, using radio astronomical observations\, a variety of cyclic- and even 
 polycyclic hydrocarbons have been detected in the very cold (10 K) Taurus 
 molecular cloud. These detections challenge our understanding of the chemi
 cal formation mechanisms under these low-temperature and low-density condi
 tions. In photon-dominated regions\, on the other hand\, very large Polycy
 clic Aromatic Hydrocarbons (PAHs) of 50 carbon atoms and larger are common
 ly detected as a class based on the characteristic mid-infrared emission b
 ands that they emit after being electronically excited by ultraviolet and 
 optical radiation. These large PAHs are exposed to a very strong radiation
  field that can alter their molecular structure and may even lead to disso
 ciation. In this seminar\, I will show how experimental studies using sync
 hrotron and free electron laser radiation – in conjunction with quantum 
 chemical computations – allow us to reveal the formation and dissociatio
 n mechanisms of interstellar (aromatic) hydrocarbons at a molecular level 
 of detail.\n\nAbout the Speaker: \n\nDr. Bouwman obtained a degree in a
 pplied physics from the Technische Hogeschool Rijswijk and then pursued a 
 master’s degree in chemistry with specialization “laser sciences” at
  the Free University in Amsterdam. He then continued his career at Leide
 n University\, where in 2010 he obtained his PhD degree in the field o
 f laboratory astrochemistry under supervision of prof. Harold Linnartz. H
 e then moved to the University of California\, Berkeley to do postdoctoral
  research in the group of prof. dr. Stephen Leone. After spending three y
 ears at the synchrotron of Lawrence Berkeley National Laboratory and on th
 e UC Berkeley campus\, in 2013\, he moved to the Free Electron Laser Fac
 ility FELIX\, at Radboud University in Nijmegen\, the Netherlands\, to con
 duct independent research on a personal grant. In 2016 he became an assist
 ant professor at Leiden University. In 2021 he started a new position as a
 n assistant professor of cosmochemistry at CU Boulder in the Laboratory fo
 r Atmospheric and Space Physics and the Chemistry Department. Dr. Bouwman�
 �main interests over the years have been in understanding the formation an
 d the dissociation of interstellar aromatic molecules using a combination 
 of physicochemical laboratory techniques and quantum chemical calculations
 . 4:00 pm
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