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Diurnal evolution of negative atmospheric ions above the boreal forest: from ground level to the free troposphere

Related publications (40)

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Effects of the Discharge Parameters on the Efficiency and Stability of Ambient Metastable-Induced Desorption Ionization

Xiao Sheng Zhang, Mario Andres Chavarria Varon

Ionization efficiency is an important factor for ion sources in mass spectrometry and ion mobility spectrometry. Using helium as the discharge gas, acetone as the sample, and high-field asymmetric ion mobility spectrometry (FAIMS) as the ion detection meth ...

Iop Publishing Ltd2015

A hydrodynamically optimized nano-electrospray ionization source and vacuum interface

Klaus Kern, Mark Pauly, Stephan Rauschenbach, Gordon Rinke

The coupling of atmospheric pressure ionization (API) sources like electrospray ionization (ESI) to vacuum based applications like mass spectrometry (MS) or ion beam deposition (IBD) is done by differential pumping, starting with a capillary or pinhole inl ...

Royal Soc Chemistry2014

A modular end-station for atomic, molecular, and cluster science at the Low Density Matter beamline of FERMI@Elettra

Marcel Drabbels, Nils Benedict Brauer, Robert Richter

The Low Density Matter end-station at the new seeded Free Electron Laser FERMI@Elettra is a versatile instrument for the study of atoms, molecules and clusters by means of electron and ion spectroscopies. Beams of atoms, molecules and helium droplets as we ...

Iop Publishing Ltd2013

Mass Spectrometry based Analytical Methods for Proteome Analysis and Redoxomics

Liang Qiao

Proteomics is nowadays one of the most important research topics in life science for understanding many life activities from the molecular level. The objective is to find out proteins or modifications on proteins that regulate biological events, aging, dis ...

EPFL2013

Conformation-Specific Spectroscopy of Peptide Fragment Ions in a low-Temperature Ion Trap

Thomas Rizzo, Oleg Boyarkine

We have applied conformer-selective IR-UV double-resonance photofragment spectroscopy at low temperatures in an ion trap mass spectrometer for the spectroscopic characterization of peptide fragment ions. We investigate b- and a-type ions formed by collisio ...

Springer-Verlag2012

Aerosol Transport and Distribution

Quentin Bourgeois

The fourth report of the Intergovernmental Panel of Climate Change (IPCC) unambiguously indicates that the climate is changing. Climate change is induced by changes in atmospheric abundances of greenhouse gases and aerosols, solar radiation and land surfac ...

EPFL2012

Ion Beam Deposition and STM Analysis of Macromolecules on Solid Surfaces in UHV

Nicha Thontasen

Organic and biological macromolecules have attracted great interest within nanotechnology research due to properties that can be useful in future devices. Interesting functionalities such as optical activity, host-guest binding and molecular recognition ar ...

EPFL2011

Recent advances in boundary-layer meteorology are beginning to allow the study of atmospheric flow phenomena that have previously been poorly understood. In this dissertation, we study the effects of complex terrain and unsteady regimes on the atmospheric ...

EPFL2011

Tropospheric ozone is a climate relevant greenhouse gas, as well as an atmospheric pollutant. Its abundance in the troposphere is mainly governed by the influx of stratospheric air masses and the photochemical production due to anthropogenic and biogenic o ...

EPFL2010

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We present here the design of a new tandem mass spectrometer that combines an electrospray ion source with a cryogenically cooled ion trap for spectroscopic studies of cold, gas-phase ions. The ability to generate large ions in the gas phase without fragme ...

American Institute of Physics2010