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Pregled bibliografske jedinice broj: 136890

Effects of near-source Compton scattering in low-energy gamma-ray spectra


Majer, Marija; Uroić, Milivoj; Bokulić, Tomislav; Pašić, Selim; Vuković, Branko; Ilakovac, Ksenofont
Effects of near-source Compton scattering in low-energy gamma-ray spectra // Nuclear Instruments and Methods in Physics Research, Section A, 555 (2005), 1-2; 243-250 (međunarodna recenzija, članak, znanstveni)


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Naslov
Effects of near-source Compton scattering in low-energy gamma-ray spectra

Autori
Majer, Marija ; Uroić, Milivoj ; Bokulić, Tomislav ; Pašić, Selim ; Vuković, Branko ; Ilakovac, Ksenofont

Izvornik
Nuclear Instruments and Methods in Physics Research, Section A (0168-9002) 555 (2005), 1-2; 243-250

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
photon spectra; low energy; germanium-detector; response function; shoulder; near-source Compton scattering

Sažetak
An extension of the previous study of germanium-detector response function for 59.537 keV gamma-rays has been made. The continua adjacent to the full-energy peaks, which are due to Compton scattering in atoms in vicinity of the gamma-ray emitting atoms (the "shoulders"), were measured with 26.345, 79.623, 80.999, 88.032, 86.554 and 105.338 keV gamma-rays for various orientations of the source plates. The changes in the shoulder spectra clearly indicate the importance of the near-source Compton scattering. Previous calculations, that included only single Compton scattering (assuming stationary electrons) and broadening due to the detector resolution, have been improved by including also the broadening due to momentum distributions of atomic electrons, and double Compton scattering. Also, a spectrum has been obtained by a Monte Carlo calculation. Better fits to the previously reported spectra measured with the 59.537 keV gamma-rays have been obtained. The shoulders in the newly measured spectra are also well explained. The calculated ratios of the numbers of pulses in the shoulders and in the corresponding full-energy peaks are in a reasonable agreement with the experimental ratios.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
0119264
0122005

Ustanove
Prirodoslovno-matematički fakultet, Zagreb

Citiraj ovu publikaciju

Majer, Marija; Uroić, Milivoj; Bokulić, Tomislav; Pašić, Selim; Vuković, Branko; Ilakovac, Ksenofont
Effects of near-source Compton scattering in low-energy gamma-ray spectra // Nuclear Instruments and Methods in Physics Research, Section A, 555 (2005), 1-2; 243-250 (međunarodna recenzija, članak, znanstveni)
Majer, M., Uroić, M., Bokulić, T., Pašić, S., Vuković, B. & Ilakovac, K. (2005) Effects of near-source Compton scattering in low-energy gamma-ray spectra. Nuclear Instruments and Methods in Physics Research, Section A, 555 (1-2), 243-250.
@article{article, year = {2005}, pages = {243-250}, keywords = {photon spectra, low energy, germanium-detector, response function, shoulder, near-source Compton scattering}, journal = {Nuclear Instruments and Methods in Physics Research, Section A}, volume = {555}, number = {1-2}, issn = {0168-9002}, title = {Effects of near-source Compton scattering in low-energy gamma-ray spectra}, keyword = {photon spectra, low energy, germanium-detector, response function, shoulder, near-source Compton scattering} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus