The J-PET detector -- a tool for precision studies of ortho-positronium decays
Abstract
The J-PET tomograph is constructed from plastic scintillator strips arranged axially in concentric cylindrical layers. It enables investigations of positronium decays by measurement of the time, position, polarization and energy deposited by photons in the scintillators, in contrast to studies conducted so far with crystal and semiconductor based detection systems where the key selection of events is based on the measurement of the photons energies. In this article we show that the J-PET tomograph system is capable of exclusive measurements of the decays of ortho-positronium atoms. We present the first positronium production results, its lifetime distribution measurements and discuss estimation of the influence of various background sources. The tomograph s performance demonstrated here makes it suitable for precision studies of positronium decays including entanglement of the final state photons, positron annihilation lifetime spectroscopy plus molecular imaging diagnostics.
Cite
@article{arxiv.2006.07467,
title = {The J-PET detector -- a tool for precision studies of ortho-positronium decays},
author = {K. Dulski and S. D. Bass and J. Chhokar and N. Chug and C. Curceanu and E. Czerwiński and M. Dadgar and J. Gajewski and A. Gajos and M. Gorgol and R. Del Grande and B. C. Hiesmayr and B. Jasińska and K. Kacprzak and Ł. Kapłon and H. Karimi and D. Kisielewska and K. Klimaszewski and P. Kopka and G. Korcyl and P. Kowalski and T. Kozik and N. Krawczyk and W. Krzemień and E. Kubicz and P. Małczak and M. Mohammed and Sz. Niedźwiecki and M. Pałka and M. Pawlik-Niedźwiecka and M. Pędziwiatr and L. Raczyński7 and J. Raj and A. Ruciński4 and S. Sharma and Shivani and R. Y. Shopa and M. Silarski and M. Skurzok and E. Ł. Stępień and F. Tayefi and W. Wiślicki and B. Zgardzińska and P. Moskal},
journal= {arXiv preprint arXiv:2006.07467},
year = {2021}
}
Comments
12 pages, 7 figures