ZMEŠKAL, Marek, Michal KOŠŤÁL, Tomáš CZAKOJ, Jan ŠIMON, Václav ZACH, Ondřej LEBEDA and Zdeněk MATĚJ. Validation of calculational determination of 18O(p,n) secondary neutron field. Online. In 15th International Conference on Nuclear Data for Science and Technology (ND2022). Sacramento: 15th International Conference on Nuclear Data for Science and Technology (ND2022), 2023, p. 1-3. ISSN 2100-014X. Available from: https://dx.doi.org/10.1051/epjconf/202328409004.
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Basic information
Original name Validation of calculational determination of 18O(p,n) secondary neutron field
Authors ZMEŠKAL, Marek (guarantor), Michal KOŠŤÁL (203 Czech Republic), Tomáš CZAKOJ, Jan ŠIMON, Václav ZACH, Ondřej LEBEDA and Zdeněk MATĚJ (203 Czech Republic, belonging to the institution).
Edition Sacramento, 15th International Conference on Nuclear Data for Science and Technology (ND2022), p. 1-3, 3 pp. 2023.
Publisher 15th International Conference on Nuclear Data for Science and Technology (ND2022)
Other information
Original language English
Type of outcome Proceedings paper
Field of Study 20201 Electrical and electronic engineering
Confidentiality degree is not subject to a state or trade secret
Publication form electronic version available online
WWW URL
RIV identification code RIV/00216224:14330/23:00133902
Organization unit Faculty of Informatics
ISSN 2100-014X
Doi http://dx.doi.org/10.1051/epjconf/202328409004
UT WoS 001006475600133
Keywords in English 18O; secondary neutron
Changed by Changed by: RNDr. Pavel Šmerk, Ph.D., učo 3880. Changed: 7/4/2024 23:57.
Abstract
Cyclotrons used to produce medical isotopes are relatively widespread. Nowadays, it is popular to place small and compact accelerators directly in hospitals. This approach simplifies handling of the produced radiopharmaceuticals, but it imposes strict radiation safety measures during production. For optimal utilization of isotope production cyclotrons, the exact knowledge of leakage neutron field is essential due to the deep penetration ability of the high energy neutrons and the accompanied secondary radiation production. Our paper presents measurement of the neutron leakage spectra for various angles from an open target assembly at the cyclotron U-120M at NPI of CAS. These spectra are compared with data obtained from a compact medical cyclotron IBA Cyclone 18/9 in UJV Rez and also with activation measurements of reactions with different threshold energies. All data were also compared with calculations made with different Monte Carlo codes using both models and data libraries. The preliminary results show significant disagreement between experiments and theoretical predictions. These findings could have implications not only to the nuclear data community but also to the production accelerators operators at the licensing stage.
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