Effects of near-source photon scattering at the energy of

Autor:	Marija Majer, Selim Pašić, Gorjana Jerbić-Zorc, Milivoj Uroić, Mirjana Budanec, Ksenofont Ilakovac, Branko Vuković
Rok vydání:	2004
Předmět:	Physics Elastic scattering Nuclear and High Energy Physics Scattering Astrophysics::High Energy Astrophysical Phenomena Compton scattering Collimator Electron Particle detector law.invention Semiconductor detector law Atomic physics Instrumentation Lepton
Zdroj:	Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 524:227-235
ISSN:	0168-9002
DOI:	10.1016/j.nima.2003.12.035
Popis:	Compton scattering on electrons in materials in the vicinity of low-energy photon-emitting atoms and in the vicinity of the detector sensitive volume causes a continuous distribution below the full-energy peak (the “shoulder”). To study effects of the near-source Compton scattering, a collimator was used in front of a planar germanium detector to reduce the near-detector scattering. The measurements show that even a small mass in vicinity of emitting atoms, such as that of a standard calibration source plate ( 0.59 g ), results in a considerable shoulder, whose shape depends very much on the orientation of the source plate. Additional mass near the source causes a strong enlargement of the shoulder, while the shape depends very much on its position. Calculations of single-Compton scattering on electrons in the vicinity of emitting atoms reproduce reasonably well the numbers of pulses and the shapes of the observed shoulders.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::cd32d61fca959e927c86ae0463155a49 https://doi.org/10.1016/j.nima.2003.12.035 Zobrazit plný text záznamu Full Text from ScienceDirect