Pretražite po imenu i prezimenu autora, mentora, urednika, prevoditelja

Napredna pretraga

Pregled bibliografske jedinice broj: 1157634

Study of Multi-Pixel Scintillator Detector Configurations for Measuring Polarized Gamma Radiation


Kožuljević, Ana Marija; Bosnar, Damir; Kunčić, Zdenka; Makek, Mihael; Parashari, Siddharth; Žugec, Petar
Study of Multi-Pixel Scintillator Detector Configurations for Measuring Polarized Gamma Radiation // Condensed matter, 6 (2021), 4; 43, 10 doi:10.3390/condmat6040043 (međunarodna recenzija, članak, znanstveni)


CROSBI ID: 1157634 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Study of Multi-Pixel Scintillator Detector Configurations for Measuring Polarized Gamma Radiation

Autori
Kožuljević, Ana Marija ; Bosnar, Damir ; Kunčić, Zdenka ; Makek, Mihael ; Parashari, Siddharth ; Žugec, Petar

Izvornik
Condensed matter (2410-3896) 6 (2021), 4; 43, 10

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

Ključne riječi
gamma-ray polarization ; Positron Emission Tomography ; quantum entanglement ; GAGG

Sažetak
When a positron annihilates, two gamma photons are created with orthogonal polarizations. It is possible to use coincidence measurements where both photons undergo Compton scattering to estimate their initial relative polarization orientation. This information is of great interest in gamma imaging systems, such as Positron Emission Tomography, where it may be used as an additional tool to distinguish true coincidence events from scatter and random background. The successful utilization of this principle critically depends on the detector’s angular and energy resolution, which determine its polarimetric performance. In this study, we use Monte Carlo simulations based on the Geant4 toolkit to model two multi-pixel detector configurations identified as prospective for the measurement of gamma-ray polarization in PET. One is based on 2 mm × 2 mm × 20 mm LYSO scintillators and the other is based on 3 mm × 3 mm × 20 mm GAGG scintillators. Each configuration has a pair of modules, each consisting of 64 crystals set up in a single 8 × 8 matrix, where both the recoil electron and the Compton-scattered photon are absorbed. We simulate positron annihilation by generating two back-to-back gamma photons of 511 keV with orthogonal polarizations. The Compton scattering is successfully identified and the modulation of the azimuthal angle difference is clearly observed. The configuration based on GAGG crystals demonstrates slightly better polarimetric performance than the one based on LYSO crystals, reflected in the more pronounced azimuthal modulation.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekti:
HRZZ-PZS-2019-02-5829 - Jednoslojni polarimetar gama zračenja za primjene u medicinskom oslikavanju i za temeljna istraživanja u fizici (SiLGaP) (Makek, Mihael, HRZZ - 2019-02) ( POIROT)

Ustanove:
Prirodoslovno-matematički fakultet, Zagreb

Profili:

Avatar Url Mihael Makek (autor)

Avatar Url Ana Marija Kožuljević (autor)

Avatar Url Damir Bosnar (autor)

Avatar Url Petar Žugec (autor)

Poveznice na cjeloviti tekst rada:

doi www.mdpi.com

Citiraj ovu publikaciju:

Kožuljević, Ana Marija; Bosnar, Damir; Kunčić, Zdenka; Makek, Mihael; Parashari, Siddharth; Žugec, Petar
Study of Multi-Pixel Scintillator Detector Configurations for Measuring Polarized Gamma Radiation // Condensed matter, 6 (2021), 4; 43, 10 doi:10.3390/condmat6040043 (međunarodna recenzija, članak, znanstveni)
Kožuljević, A., Bosnar, D., Kunčić, Z., Makek, M., Parashari, S. & Žugec, P. (2021) Study of Multi-Pixel Scintillator Detector Configurations for Measuring Polarized Gamma Radiation. Condensed matter, 6 (4), 43, 10 doi:10.3390/condmat6040043.
@article{article, author = {Ko\v{z}uljevi\'{c}, Ana Marija and Bosnar, Damir and Kun\v{c}i\'{c}, Zdenka and Makek, Mihael and Parashari, Siddharth and \v{Z}ugec, Petar}, year = {2021}, pages = {10}, DOI = {10.3390/condmat6040043}, chapter = {43}, keywords = {gamma-ray polarization, Positron Emission Tomography, quantum entanglement, GAGG}, journal = {Condensed matter}, doi = {10.3390/condmat6040043}, volume = {6}, number = {4}, issn = {2410-3896}, title = {Study of Multi-Pixel Scintillator Detector Configurations for Measuring Polarized Gamma Radiation}, keyword = {gamma-ray polarization, Positron Emission Tomography, quantum entanglement, GAGG}, chapternumber = {43} }
@article{article, author = {Ko\v{z}uljevi\'{c}, Ana Marija and Bosnar, Damir and Kun\v{c}i\'{c}, Zdenka and Makek, Mihael and Parashari, Siddharth and \v{Z}ugec, Petar}, year = {2021}, pages = {10}, DOI = {10.3390/condmat6040043}, chapter = {43}, keywords = {gamma-ray polarization, Positron Emission Tomography, quantum entanglement, GAGG}, journal = {Condensed matter}, doi = {10.3390/condmat6040043}, volume = {6}, number = {4}, issn = {2410-3896}, title = {Study of Multi-Pixel Scintillator Detector Configurations for Measuring Polarized Gamma Radiation}, keyword = {gamma-ray polarization, Positron Emission Tomography, quantum entanglement, GAGG}, chapternumber = {43} }

Časopis indeksira:


  • Web of Science Core Collection (WoSCC)
    • Emerging Sources Citation Index (ESCI)
  • Scopus


Citati:





    Contrast
    Increase Font
    Decrease Font
    Dyslexic Font