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A year in orbit: ISS deployment tests radiation detectors for future space missions
The predawn darkness on a cool Florida night was shattered by the ignition of nine Merlin engines on a SpaceX Falcon 9 rocket. The thrust of the engines shook the ground miles away. From a distance, the rocket appeared to slowly rise above the horizon. For the cargo onboard, the launch was anything but gentle, as the ignition of liquid oxygen generated more than 1.5 million pounds of force. After the rocket had been out of sight for several minutes, the booster dramatically returned to Earth with several sonic booms in a captivating show of engineering designed to make space travel less expensive and more sustainable.
Maman Kartaman Ajiriyanto, Aslina Br. Ginting, Sungkono, Supardjo, Juan Carlos Sihotang
Nuclear Technology | Volume 211 | Number 5 | May 2025 | Pages 953-962
Research Article | doi.org/10.1080/00295450.2024.2365485
Articles are hosted by Taylor and Francis Online.
Post-irradiation examination (PIE) of a low-enriched-uranium silicide fuel plate, irradiated in the Indonesian Reaktor Serba Guna–Gerrit Augustinus Siwabessy (RSG-GAS) multipurpose reactor, was successfully conducted. The objective of the PIE project was to evaluate the performance and integrity of the fuel under radiation exposure and, furthermore, to explore the potential for increasing the burnup level, enhancing its efficiency and effectiveness. The targeted fuel plate, identified as IDA0045, was extracted from the experimental silicide fuel element RI-SIE2, which had a burnup level of approximately 56% loss of 235U. A scanning electron microscope combined with energy dispersive X-ray spectroscopy microstructural examination and a Vickers microhardness test were conducted for the top, middle, and bottom sections of the fuel. The PIE results indicated minimal occurrence of fuel swelling and good fuel integrity under irradiation, suggesting the possibility of increasing the burnup level.