Temat: liquid target - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Investigation of 99Mo potential production via UO2SO4 liquid target irradiation in a 5 MW nuclear research reactor
Autorzy:: Gholamzadeh, Z.
Mirvakili, S. M.
Davari, A.
Alizadeh, M.
Joz-Vaziri, A.
Powiązania:: https://bibliotekanauki.pl/articles/148499.pdf
Data publikacji:: 2017
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: research reactor
99Mo production
uranyl sulphate
liquid target
MCNPX code
Opis:: The activation method for 99Mo production in comparison to fi ssionable target irradiation in research reactors is less preferable. Therefore, 99Mo yield using UO2SO4 samples was theoretically investigated. Computational results revealed admirable potential of the liquid samples for 99Mo production. Low-concentrated uranyl sulphate samples could easily be handled by the irradiation box. The sample geometry optimization improves thermal hydraulic conditions and production yield. The optimized geometry including only 0.12 g 235U produced 57Ci99Mo at end-of-irradiation (EOI) with a temperature peak of 72°C during the irradiation.
Źródło:: Nukleonika; 2017, 62, 1; 37-45
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Assessment of the staff absorbed dose related to cyclotron operation and service in the production of 18F radiopharmaceuticals
Autorzy:: Sadat-Eshkevar, S. M.
Karimian, A.
Mirzaii, M.
Powiązania:: https://bibliotekanauki.pl/articles/146607.pdf
Data publikacji:: 2012
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: staff dosimetry
Monte Carlo (MC) simulation
18F production
cyclotron
induced radioactivity
liquid target
Opis:: Cyclotron accelerators are used to produce medical radioisotopes. One of the most important problems which may be encountered is malfunction of a part of the target or beam line which requires stopping of the bombardment and making a repair. The decision about doing the repair depends on the whole body dose rate in a target room. In this work, dosimetric conditions related to the production of 18FDG radiopharmaceutical were simulated by the Monte Carlo (MC) method. Independently, the dose rates were measured by 7 ICRU spherical body phantoms placed inside the liquid target room and the maze of the cyclotron. The radiation dose rate inside the target room depends on the duration of the bombardment and the time passed after stopping the bombardment. The correlation between duration of the bombardment and required time after stopping the bombardment to reach the absorbed dose rate less than 25 mi Sv/h, was calculated for the presence and absence of the irradiated target. The results showed that the repair can be started immediately after stopping of the proton bombardment only if the target has been ejected from the target room and the duration of bombardment has not taken more than 10 min.
Źródło:: Nukleonika; 2012, 57, 3; 407-410
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

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