2013年度 物質生命理工学科コロキウム

Low Energy Free Electron Driven Chemistry in Polyatomic Molecules
講師：Dr. Daniel Slaughter (Lawrence Berkeley National Laboratory, USA)

日時/場所	2013年 7月 16日（火） 11:15-12:30 （L-911・図書館内会議室）

詳細

　講師にDr. Daniel Slaughter (Lawrence Berkeley National Laboratory, USA) をお招きして、以下の内容でご講演いただきます。皆様お誘い合わせのうえご参加ください。
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"Low Energy Free Electron Driven Chemistry in Polyatomic Molecules"

Observation of the dynamics of dissociative electron attachment (DEA) in polyatomic has recently become possible by momentum imaging of the fragments resulting from the dissociating transient anion resonance. A momentum spectrometer featuring a 4-pi solid angle of detection is combined with a pulsed electron beam and effusive molecular beam in a crossed geometry to measure the full 3D momentum distribution of dissociating negative ions. Guided by electronic structure calculations that indicate the most likely orientation of the molecule at the time of attachment, I present key aspects of the dynamics of DEA in methanol and carbon dioxide. I will then present some preliminary experimental results for our study of the dynamics of DEA in biomolecules, including destructive dissociation of the nucleobase uracil by 6 eV electrons.

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