Results 1 to 10 of about 4,639 (219)

Observation of positronium diffraction [PDF]

Nature Communications
Diffraction of matter waves is a fundamental consequence of quantum mechanics, directly illustrating the core principles of wave-particle duality, quantum superposition, and quantum interference.
Yugo Nagata, Riki Mikami, Nazrene Zafar, Yasuyuki Nagashima   +3 more
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First ex-vivo positronium imaging of tissues with modular J-PET scanner using 44Sc radionuclide [PDF]

Zeitschrift für Medizinische Physik
This study presents the first ex-vivo positronium imaging of human tissues using the modular J-PET scanner with the 44Sc radionuclide. The 44Sc isotope was produced via the 44Ca(p, n)44Sc nuclear reaction and used to perform positronium imaging of ...
Karol Kubat, Manish Das, Sushil Sharma, Ermias Y. Beyene, Aleksander Bilewicz, Jarosław Choiński, Neha Chug, Catalina Curceanu, Eryk Czerwiński, Jakub Hajduga, Sharareh Jalali, Krzysztof Kacprzak, Tevfik Kaplanoglu, Łukasz Kapłon, Kamila Kasperska, Aleksander Khreptak, Grzegorz Korcyl, Tomasz Kozik, Anoop Kunimmal Venadan, Deepak Kumar, Sumit Kumar Kundu, Bartosz Leszczyński, Edward Lisowski, Filip Lisowski, Justyna Mędrala-Sowa, Simbarashe Moyo, Wiktor Mryka, Szymon Niedźwiecki, Anand Pandey, Piyush Pandey, Szymon Parzych, Alessio Porcelli, Bartłomiej Rachwał, Martin Rädler, Magdalena Skurzok, Anna Stolarz, Tomasz Szumlak, Satyam Tiwari, Pooja Tanty, Keyvan Tayefi Ardebili, Kavya Valsan Eliyan, Rafał Walczak, Paweł Moskal, Ewa Ł. Stępień   +43 more
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First positronium lifetime imaging with scandium-44 on a long axial field-of-view PET/CT [PDF]

Frontiers in Nuclear Medicine
PurposeThe physical properties of 44Sc, combined with its imminent clinical application, position it as a prime candidate for in vivo positronium lifetime imaging.
Lorenzo Mercolli, Lorenzo Mercolli, Lorenzo Mercolli, William M. Steinberger, Pascal V. Grundler, Anzhelika Moiseeva, Saverio Braccini, Maurizio Conti, Paweł Moskal, Paweł Moskal, Narendra Rathod, Narendra Rathod, Axel Rominger, Hasan Sari, Hasan Sari, Hasan Sari, Roger Schibli, Roger Schibli, Robert Seifert, Robert Seifert, Kuangyu Shi, Kuangyu Shi, Ewa Ł. Stepień, Ewa Ł. Stepień, Nicholas P. van der Meulen, Nicholas P. van der Meulen   +25 more
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Discrete symmetries tested at 10−4 precision using linear polarization of photons from positronium annihilations [PDF]

Nature Communications
Discrete symmetries play an important role in particle physics with violation of CP connected to the matter-antimatter imbalance in the Universe. We report the most precise test of P, T and CP invariance in decays of ortho-positronium, performed with ...
Paweł Moskal, Eryk Czerwiński, Juhi Raj, Steven D. Bass, Ermias Y. Beyene, Neha Chug, Aurélien Coussat, Catalina Curceanu, Meysam Dadgar, Manish Das, Kamil Dulski, Aleksander Gajos, Marek Gorgol, Beatrix C. Hiesmayr, Bożena Jasińska, Krzysztof Kacprzak, Tevfik Kaplanoglu, Łukasz Kapłon, Konrad Klimaszewski, Paweł Konieczka, Grzegorz Korcyl, Tomasz Kozik, Wojciech Krzemień, Deepak Kumar, Simbarashe Moyo, Wiktor Mryka, Szymon Niedźwiecki, Szymon Parzych, Elena Pérez del Río, Lech Raczyński, Sushil Sharma, Shivani Choudhary, Roman Y. Shopa, Michał Silarski, Magdalena Skurzok, Ewa Ł. Stępień, Pooja Tanty, Faranak Tayefi Ardebili, Keyvan Tayefi Ardebili, Kavya Valsan Eliyan, Wojciech Wiślicki   +40 more
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Ortho-positronium lifetime for soft-tissue classification [PDF]

Scientific Reports
The objective of this work is to showcase the ortho-positronium lifetime as a probe for soft-tissue characterization. We employed positron annihilation lifetime spectroscopy to experimentally measure the three components of the positron annihilation ...
Ashish V. Avachat, Kholod H. Mahmoud, Anthony G. Leja, Jiajie J. Xu, Mark A. Anastasio, Mayandi Sivaguru, Angela Di Fulvio   +6 more
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Deep Minimum and a Vortex for Positronium Formation in Low-Energy Positron-Helium Collisions

Atoms, 2021
We find a zero in the positronium formation scattering amplitude and a deep minimum in the logarithm of the corresponding differential cross section for positron–helium collisions for an energy just above the positronium formation threshold ...
Albandari W. Alrowaily, Sandra J. Ward, Peter Van Reeth   +2 more
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The tests of CP and CPT symmetry using the J-PET detector [PDF]

EPJ Web of Conferences, 2019
Symmetries under the parity transformation (P), charge-conjugation (C) and time reversal (T) are of fundamental importance in nuclear and elementary particle physics.
Mohammed Muhsin, Gajos Aleksander
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Simulation of the formation of antihydrogen via magnetobound positronium

AIP Advances, 2021
Antihydrogen formation involving magnetobound positronium is simulated by computing classical trajectories. Simulated collisions between electrons and positrons generate magnetobound positronium, which consists of electron–positron pairs that are not ...
F. F. Aguirre, C. A. Ordonez
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3D melanoma spheroid model for the development of positronium biomarkers

Scientific Reports, 2023
It was recently demonstrated that newly invented positronium imaging may be used for improving cancer diagnostics by providing additional information about tissue pathology with respect to the standardized uptake value currently available in positron ...
Hanieh Karimi, Paweł Moskal, Agata Żak, Ewa Ł. Stępień   +3 more
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Recent results on the positronium decay studies with the J-PET detector [PDF]

EPJ Web of Conferences, 2022
Positronium, as a bound state of electron and positron and the lightest matter-antimatter system and at the same time an eigenstate of the C and P operators is a unique probe to search for possible violation of combined charge, parity, and time-reversal ...
Czerwiński Eryk, Raj Juhi
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