6533b82cfe1ef96bd128ea0f
RESEARCH PRODUCT
Corrections for positon annihilation in flight in nuclear spectrometry
M. ValkonenJ. Kantelesubject
PhysicsNuclear physicsScintillationNonlinear Sciences::Exactly Solvable and Integrable SystemsAnnihilationContinuous spectrumGamma spectroscopyGeneral MedicineAtomic physicsSpectroscopySpectral lineSemiconductor detectorFermi Gamma-ray Space Telescopedescription
Abstract Theories of positon single- and two-quanta annihilation in flight, the Fermi beta-decay theory, and theories of positon energy loss are used in calculations of total probabilities of annihilation in flight of positons in continuous spectra. The results are given in a nomogram useful in correcting for positon annihilation in flight in various nuclear-spectrometry experiments. Confirmation of the theoretical basis employed was obtained by comparing total absolute probabilities for annihilation in flight of 62 Cu positons in Perspex, copper, cadmium and lead, using a new differential method. The agreement with the theory was found to be excellent. A method for obtaining “correct” positon energy spectra with scintillation or semiconductor detectors is proposed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1973-10-01 | Nuclear Instruments and Methods |