327 research outputs found
PIXE Detection Limits for some Aerosol Collection Substrates by Excitation with protons and 4He2+ Ions from a 3 MV Tandem Accelerator
Comparisons of PIXE detection limits for K, X rays using 2-5 MeV protons and 7-8 MeV 4He2+ ions as projectiles have been performed. The comparisons have been made for common aerosol backings. According to simple theoretical considerations regarding X-ray production cross sections and the production of background radiation, detection limits for 4He2+ should be two to four times lower than for protons for equal vefoeity projectiles of equal numbers. However, the background in X-ray spectra arising from gamma-quanta being Compton scattered in the Si(Li) detector can strongIy affect the detection limits. The detection limits using protons and 4HeZ+ ions from a 3 MV electrostatic tandem accelerator are determined and discussed
Non-Refractory Chemical Composition of the Submicron Regional Background Aerosol in southern Sweden measured with HR-ToF-AMS
Chemical and microphysical characterization of black carbon containing urban, rural and laboratory aerosols
δ13C – A useful tool of source characterization of the carbonaceous aerosol at rural measurement sites?
Physical and chemical characterization of urban aerosol particles through Soot Particle Aerosol Mass Spectrometry
Atmosfäriska aerosoler : Luftburna partiklar och gaser bildar tillsammans aerosoler - med betydelse för hälsa och klimat.
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