Scintillation spectroscopy
The scintillation spectroscopy is used to determine energy spectra of radiation sources. Since every radioactive preparation has a characteristic energy spectrum, decay schemes can also be interpreted in this way.
Accordingly, not only the number of emitted particles (e.g. scintillation counter ) is measured , but also their energy.
The most common application is the analysis of gamma and beta radiation sources.
The analysis of gamma spectra can be done via the photo effect , the Compton effect or pair formation . The analysis of beta spectra is carried out by indirect measurement via annihilation processes or by transferring energy to solvent molecules. In the first case, beta emitters emit positrons when they decay , and when they hit electrons they annihilate as two gamma quanta (annihilation). The second case refers to the collision of beta particles with a solvent molecule , whereby an amount of energy is passed on from the beta particle to the solvent (“cocktail”). The energetically stimulated cocktail can either transfer the energy within the cocktail to another cocktail molecule or give it off in the form of light.
See also
literature
- Gordon Gilmore: Practical Gamma-ray Spectroscopy . 2nd Edition. John Wiley & Sons, Chichester et al. 2008, ISBN 978-0-470-86196-7 , Chapter 10 Scintillation Spectrometry .
- Karl Heinrich Lieser: Nuclear and Radiochemistry. Fundamentals and Applications . VCH, Weinheim et al. 1997, ISBN 3-527-29453-8 .
Individual evidence
- ↑ Wolfgang Demtröder : Experimental Physics 4. Nuclear, Particle and Astrophysics . 3rd, revised and expanded edition. Springer, Berlin / Heidelberg 2010, ISBN 978-3-642-01597-7 .