The Neumark Group

Department of Chemistry, University of California Berkeley
and Chemical Science Division, Lawrence Berkeley National Laboratory

Slow photoelectron velocity-map imaging spectroscopy

Fast beam translational spectroscopy

Femtosecond Time-resolved photoelectron imaging

Molecular beam reactive scattering and photodissociation

Spectroscopy and dynamics in helium droplets

Attosecond spectroscopy

Spectroscopy and dynamics in liquid microjets

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Molecular Beam Reactive Scattering and Photodissociation


The photodissociation dynamics of neutral molecules following excitation at 193 nm are studied utilizing one of two photofragment ionization techniques, electron impact or photoionization with tunable VUV synchrotron radiation.

Molecules studied:

Unsaturated hydrocarbons.

Information obtained:

Translational energy distributions, product channel branching ratios, photoionization efficiency curves, reaction mechanisms.

Project members (Now Recruiting!!):

Mark Shapero

Isaac Ramphal

Recent publications:

♦ "Production and Photodissociation of the Methyl Perthiyl Radical" N. C. Cole-Filipiak, M. Shapero, C. Haibach-Morris, D. M. Neumark, J. Phys. Chem. A 120, 4818 (2016). pdf

♦ "Benzyl Radical Photodissociation Dynamics at 248 nm" M. Shapero, N. C. Cole-Filipiak, C. Haibach-Morris, D. M. Neumark, J. Phys. Chem. A 119, 12349 (2015). pdf

♦ "Revisiting the photodissociation dynamics of the phenyl radical" N. C. Cole-Filipiak, M. Shapero, B. Negru, D. M. Neumark, J. Chem. Phys. 141, 104307 (2014). pdf