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Fragmentação de moléculas pela luz síncrotron e por elétrons rápidos. I. O caso do halotano, C2F3HClBr
The photofragmentation of a core-excited halogenated compound, Halotane (C2F3HClBr), generally used as anesthetic by inhalation, has been studied using high energy photons and electrons near C 1sExpand
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A new variable-angle intermediate-energy low-resolution electron energy loss spectrometer
A new variable-angle (0-60 degrees ) intermediate-energy (0.5-3.0 keV) low-resolution (0.5 eV) large-energy-loss (500 eV) electron spectrometer is described. The spectrometer is a crossed-beamExpand
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Electron scattering from trans 1,3-butadiene molecule: cross-sections, oscillator strength and VUV photoabsorption cross-sections
Electron energy-loss spectra for the butadiene molecule were measured in the scattering angular range of 2.0° to 8.0°, in an energy-loss range from 2 to 50 eV, using 1000 eV incident electrons. TheExpand
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Irradiação de polímeros com feixe de elétrons: caracterização de íons positivos através da técnica de tempo-de-vôo
With the aim of studying the interaction of fast electrons with solid surfaces we have developed an experimental set-up based on electron stimulated desorption (ESD) coupled to time-of-flight (TOF)Expand
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Photon stimulated ion desorption studies from poly(sulphone) using synchrotron radiation in a single-bunch mode
Abstract Photon stimulated ion desorption (PSID) studies from poly(sulphone) (PS) have been carried out by using high-resolution time-of-flight mass spectrometry. Synchrotron radiation at theExpand
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Near Edge X-ray Absorption Fine Structure (NEXAFS) Spectroscopy of Molecules of Biological Interest: From Chemically Pure to Complex Samples
In Near Edge X-ray Absorption Fine Structure (NEXAFS) spectroscopy, molecular inner-shell (core) electrons are excited to partially filled and empty states. Excitation of core electrons leads to aExpand
Ionic Fragmentation of Methyl Methacrylate Induced by Synchrotron Radiation and Multiphoton Ionization
Ionic fragmentation of methylmethacrylate has been observed using synchrotron radiation and laser excitation. A recently developed time-of-flight mass spectrometer was used for the ionicExpand
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New record of a corallivorous gastropod in South Atlantic coral reefs
Corallivory can play a significant controlling role on coralpopulation dynamics. Over 160 species have been reportedto consume scleractinian corals, including 51 species ofinvertebrate corallivoresExpand
New and simple mass calibration procedure for time-of-flight studies of electron stimulated desorption of ions from solid samples
A technique that provides a simple mass scale calibration for linear time-of-flight (TOF) measurements is presented. This procedure has been used in the calibration of the mass scale in experimentsExpand
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