PIXE Detection Limits for some Aerosol Collection Substrates by Excitation with protons and 4He2+ Ions from a 3 MV Tandem Accelerator
Författare
Summary, in English
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.
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.
Avdelning/ar
Publiceringsår
1984
Språk
Engelska
Sidor
441-445
Publikation/Tidskrift/Serie
Nuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms
Issue
1084
Fulltext
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Dokumenttyp
Artikel i tidskrift
Förlag
Elsevier
Ämne
- Subatomic Physics
- Production Engineering, Human Work Science and Ergonomics
Nyckelord
- PIXE
- Aerosol
- Detection Limits
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 0168-583X