Musahid Ahmed Chemical Sciences Division Lawrence Berkeley National Laboratory Biography Publications Institution JoVE Articles Musahid Ahmed has not added a biography. If you are Musahid Ahmed and would like to personalize this page please email our Author Liaison for assistance. Publications Thermal Decomposition of CH(3)CHO Studied by Matrix Infrared Spectroscopy and Photoionization Mass Spectroscopy The Journal of Chemical Physics. Oct, 2012 | Pubmed ID: 23126711 Oxygen Isotope Fractionation in the Vacuum Ultraviolet Photodissociation of Carbon Monoxide: Wavelength, Pressure, and Temperature Dependency The Journal of Chemical Physics. Jul, 2012 | Pubmed ID: 22803538 Ionization of Dimethyluracil Dimers Leads to Facile Proton Transfer in the Absence of Hydrogen Bonds Nature Chemistry. Apr, 2012 | Pubmed ID: 22437719 A VUV Photoionization Study of the Combustion-relevant Reaction of the Phenyl Radical (C6H5) with Propylene (C3H6) in a High Temperature Chemical Reactor The Journal of Physical Chemistry. A. Apr, 2012 | Pubmed ID: 22390714 The Effect of Microhydration on Ionization Energies of Thymine Faraday Discussions. 2011 | Pubmed ID: 22457954 Desorption Dynamics, Internal Energies, and Imaging of Organic Molecules from Surfaces with Laser Desorption and Vacuum Ultraviolet (VUV) Photoionization Chemistry, an Asian Journal. Nov, 2011 | Pubmed ID: 21976383 Comparing Vacuum and Extreme Ultraviolet Radiation for Postionization of Laser Desorbed Neutrals from Bacterial Biofilms and Organic Fullerenes Nuclear Instruments & Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment. Sep, 2011 | Pubmed ID: 21822347 The Products of the Thermal Decomposition of CH3CHO The Journal of Chemical Physics. Jul, 2011 | Pubmed ID: 21744901 Brominated Tyrosine and Polyelectrolyte Multilayer Analysis by Laser Desorption Vacuum Ultraviolet Postionization and Secondary Ion Mass Spectrometry Analytical Chemistry. Jun, 2011 | Pubmed ID: 21548612 The Direct Observation of Secondary Radical Chain Chemistry in the Heterogeneous Reaction of Chlorine Atoms with Submicron Squalane Droplets Physical Chemistry Chemical Physics : PCCP. May, 2011 | Pubmed ID: 21455529 Vacuum-ultraviolet Photoionization and Mass Spectrometric Characterization of Lignin Monomers Coniferyl and Sinapyl Alcohols The Journal of Physical Chemistry. A. Apr, 2011 | Pubmed ID: 21410275 Untangling the Chemical Evolution of Titan's Atmosphere and Surface--from Homogeneous to Heterogeneous Chemistry Faraday Discussions. 2010 | Pubmed ID: 21302560 Electronic Structure and Spectroscopy of Nucleic Acid Bases: Ionization Energies, Ionization-induced Structural Changes, and Photoelectron Spectra The Journal of Physical Chemistry. A. Nov, 2010 | Pubmed ID: 21038927 Laser Desorption Postionization Mass Spectrometry of Antibiotic-treated Bacterial Biofilms Using Tunable Vacuum Ultraviolet Radiation Analytical Chemistry. Sep, 2010 | Pubmed ID: 20712373 Spectroscopic Signatures of Proton Transfer Dynamics in the Water Dimer Cation The Journal of Chemical Physics. May, 2010 | Pubmed ID: 20499967 Ionization of Cytosine Monomer and Dimer Studied by VUV Photoionization and Electronic Structure Calculations Physical Chemistry Chemical Physics : PCCP. Mar, 2010 | Pubmed ID: 20449376 The Effect of Pi-stacking, H-bonding, and Electrostatic Interactions on the Ionization Energies of Nucleic Acid Bases: Adenine-adenine, Thymine-thymine and Adenine-thymine Dimers Physical Chemistry Chemical Physics : PCCP. Mar, 2010 | Pubmed ID: 20449342 Chemical Dynamics, Molecular Energetics, and Kinetics at the Synchrotron Physical Chemistry Chemical Physics : PCCP. Jul, 2010 | Pubmed ID: 20419177 Internal Energies of Ion-sputtered Neutral Tryptophan and Thymine Molecules Determined by Vacuum Ultraviolet Photoionization Analytical Chemistry. May, 2010 | Pubmed ID: 20353160 Determination of Ionization Energies of Small Silicon Clusters with Vacuum Ultraviolet Radiation The Journal of Physical Chemistry. A. Mar, 2010 | Pubmed ID: 20017531 Tunable Wavelength Soft Photoionization of Ionic Liquid Vapors The Journal of Physical Chemistry. A. Jan, 2010 | Pubmed ID: 19957958 Quantifying the Reactive Uptake of OH by Organic Aerosols in a Continuous Flow Stirred Tank Reactor Physical Chemistry Chemical Physics : PCCP. Sep, 2009 | Pubmed ID: 19727496 Mass-analyzed Threshold Ionization (MATI) Spectroscopy of Atoms and Molecules Using VUV Synchrotron Radiation The Journal of Physical Chemistry. A. Dec, 2009 | Pubmed ID: 19476362 Imaging with Mass Spectrometry: a Secondary Ion and VUV-photoionization Study of Ion-sputtered Atoms and Clusters from GaAs and Au The Journal of Physical Chemistry. A. Apr, 2009 | Pubmed ID: 19371112 Experimental Observation of Guanine Tautomers with VUV Photoionization The Journal of Physical Chemistry. A. Apr, 2009 | Pubmed ID: 19344111 Vacuum-ultraviolet Photoionization Measurement and Ab Initio Calculation of the Ionization Energy of Gas-phase SiO2 The Journal of Physical Chemistry. A. Feb, 2009 | Pubmed ID: 19170561 The Multiplexed Chemical Kinetic Photoionization Mass Spectrometer: a New Approach to Isomer-resolved Chemical Kinetics The Review of Scientific Instruments. Oct, 2008 | Pubmed ID: 19044733 Experimental Test of Self-shielding in Vacuum Ultraviolet Photodissociation of CO Science (New York, N.Y.). Sep, 2008 | Pubmed ID: 18772432 Direct Determination of the Ionization Energies of PtC, PtO, and PtO2 with VUV Radiation The Journal of Physical Chemistry. A. Oct, 2008 | Pubmed ID: 18710200 Vacuum-ultraviolet (VUV) Photoionization of Small Methanol and Methanol-water Clusters The Journal of Physical Chemistry. A. Oct, 2008 | Pubmed ID: 18578483 Vacuum Ultraviolet (VUV) Photoionization of Small Water Clusters The Journal of Physical Chemistry. A. Oct, 2007 | Pubmed ID: 17715907 Ionization Thresholds of Small Carbon Clusters: Tunable VUV Experiments and Theory Journal of the American Chemical Society. Aug, 2007 | Pubmed ID: 17655303 A Combined Experimental and Computational Study on the Ionization Energies of the Cyclic and Linear C3H Isomers Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry. Jun, 2007 | Pubmed ID: 17429825 Vacuum-ultraviolet Photoionization Studies of the Microhydration of DNA Bases (guanine, Cytosine, Adenine, and Thymine) The Journal of Physical Chemistry. A. Aug, 2007 | Pubmed ID: 17419600 Energy-resolved Photoionization of Alkylperoxy Radicals and the Stability of Their Cations Journal of the American Chemical Society. Oct, 2006 | Pubmed ID: 17031970 Two-color Visible/vacuum Ultraviolet Photoelectron Imaging Dynamics of Br2 The Journal of Chemical Physics. Oct, 2006 | Pubmed ID: 17029468 VUV Photoelectron Imaging of Biological Nanoparticles: Ionization Energy Determination of Nanophase Glycine and Phenylalanine-glycine-glycine Physical Chemistry Chemical Physics : PCCP. Apr, 2006 | Pubmed ID: 16633674 Thermal Vaporization of Biological Nanoparticles: Fragment-free Vacuum Ultraviolet Photoionization Mass Spectra of Tryptophan, Phenylalanine-glycine-glycine, and Beta-carotene The Journal of Physical Chemistry. A. Feb, 2006 | Pubmed ID: 16466244 Elastic Light Scattering from Nanoparticles by Monochromatic Vacuum-ultraviolet Radiation The Journal of Chemical Physics. Jan, 2006 | Pubmed ID: 16438600 Vacuum Ultraviolet Photoionization of C3 Journal of the American Chemical Society. Jan, 2006 | Pubmed ID: 16390150 Direct Determination of the Ionization Energies of FeO and CuO with VUV Radiation The Journal of Chemical Physics. Sep, 2005 | Pubmed ID: 16392565 Synchrotron Radiation Based Aerosol Time-of-flight Mass Spectrometry for Organic Constituents Analytical Chemistry. Sep, 2005 | Pubmed ID: 16159127 Light Scattering of Ultrafine Silica Particles by VUV Synchrotron Radiation Nano Letters. Jun, 2005 | Pubmed ID: 15943434 Crossed Beams Study of the Reaction 1CH2+C2H2-->C3H3+H The Journal of Chemical Physics. Oct, 2004 | Pubmed ID: 15446918 Photoelectron Imaging of Helium Droplets Physical Review Letters. Jul, 2003 | Pubmed ID: 12906657 Molekylær Beam massespektrometri Med Tunable Vacuum Ultraviolet (VUV) synkrotronstråling Amir Golan1, Musahid Ahmed1 1Chemical Sciences Division, Lawrence Berkeley National Laboratory JoVE 50164 Engineering
Molekylær Beam massespektrometri Med Tunable Vacuum Ultraviolet (VUV) synkrotronstråling Amir Golan1, Musahid Ahmed1 1Chemical Sciences Division, Lawrence Berkeley National Laboratory JoVE 50164 Engineering