Determination of the 3\gamma fraction from positron annihilation in mesoporous materials for symmetry violation experiment with J-PET scanner
| Autor: | Jasińska, B., Gorgol, M., Wiertel, M., Zaleski, R., Alfs, D., Bednarski, T., Białas, P., Czerwiński, E., Dulski, K., Gajos, A., Głowacz, B., Kamińska, D., Kapłon, Ł., Korcyl, G., Kowalski, P., Kozik, T., Krzemień, W., Kubicz, E., Mohammed, M., Niedźwiecki, Sz., Pałka, M., Raczyński, L., Rudy, Z., Rundel, O., Sharma, N. G., Silarski, M., Słomski, A., Strzelecki, A., Wieczorek, A., Wiślicki, W., Zgardzińska, B., Zieliński, M., Moskal, P. |
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| Rok vydání: | 2016 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.5506/APhysPolB.47.453 |
| Popis: | Various mesoporous materials were investigated to choose the best material for experiments requiring high yield of long-lived positronium. We found that the fraction of 3\gamma annihilation determined using \gamma-ray energy spectra and positron annihilation lifetime spectra (PAL) changed from 20% to 25%. The 3gamma fraction and o-Ps formation probability in the polymer XAD-4 is found to be the largest. Elemental analysis performed using scanning electron microscop (SEM) equipped with energy-dispersive X-ray spectroscop EDS show high purity of the investigated materials. Comment: 12 pages, 2 figures |
| Databáze: | arXiv |
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