Seminarium Fizyki Jądra Atomowego

Positronium is the lightest atom and at the same time an anti-atom which is built from an electron and positron. When trapped between or within molecules its properties change and vary depending on the size of the intermolecular voids. The newly constructed Jagiellonian Positron Emission Tomograph (J-PET) is the first PET scanner built from plastic scintillators. It is a world unique apparatus enabling measurement and imaging of positronium properties and studies of the quantum entanglement of photons originating from positronium annihilations. In the talk we will discuss the recently proposed method of positronium imaging of the human body and possibilities to use properties of positronium atoms such as (environment modified) lifetime or entanglement of photons produced in positronium annihilation as diagnostic biomarkers for cancer therapy. In addition we will present the capability of the J-PET detector to improve the current precision of testing CP, T and CPT symmetries in the decays of positronium atoms and report on results from the first data-taking campaigns.