Publication:
Setup of Compton polarimeters for measuring entangled annihilation photons

Дата
2022
Авторы
Abdurashitov, D.
Borisenko, D.
Guber, F.
Ivashkin, A.
Baranov, A.
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Научные группы
Организационные подразделения
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Организационная единица
Институт ядерной физики и технологий
Цель ИЯФиТ и стратегия развития - создание и развитие научно-образовательного центра мирового уровня в области ядерной физики и технологий, радиационного материаловедения, физики элементарных частиц, астрофизики и космофизики.
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Аннотация
© 2022 IOP Publishing Ltd and Sissa MedialabAn experimental setup for studying the Compton scattering of annihilation photons in various (entangled and decoherent) quantum states is presented. Two entangled 3-quanta with an energy of 511 keV and mutually orthogonal polarizations are produced by positron-electron annihilation in a thin aluminum plate and are emitted in opposite directions. To measure both photons, the setup provides two equivalent arms of Compton polarimeters. A Compton polarimeter consists of a plastic scintillation scatterer and an array of NaI(Tl) detectors for measuring photons deflected at an angle of 90°. The intermediate scatterer of the GAGG scintillator with SiPM readout is inserted into one of the arms to create a tagged decoherence process prior to the measurement of annihilation photons in polarimeters. The performance of Compton scatterers and NaI(Tl) counters is discussed. The polarization modulation factor and the analyzing power of Compton polarimeters are evaluated from the angular distributions of scattered gammas. The Compton scattering of photons in entangled and decoherent states is compared reliably for the first time.
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Setup of Compton polarimeters for measuring entangled annihilation photons / Abdurashitov, D. [et al.] // Journal of Instrumentation. - 2022. - 17. - № 3. - 10.1088/1748-0221/17/03/P03010
URI
https://www.doi.org/10.1088/1748-0221/17/03/P03010
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85127582698&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000775007900004
 https://openrepository.mephi.ru/handle/123456789/28916
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