In a groundbreaking development, researchers at the Facility for Rare Isotope Beams (FRIB) have achieved a new landmark in nuclear physics by successfully accelerating uranium ions to deliver an astounding 10.4 kilowatts of continuous beam power. This unprecedented milestone was published in the journal *Physical Review Accelerators and Beams*, highlighting the significance of uranium in the realm of isotope research. As one of the most challenging elements to accelerate, the achievement sheds light on uranium’s critical role in producing a diverse range of isotopes needed for a variety of scientific inquiries.

The Importance of Uranium in Scientific Research

The National Academy of Sciences and the Nuclear Science Advisory Committee have identified over 17 key scientific programs reliant on rare isotope beams, with more than half directly depending on uranium as a primary beam source. This preference stems from uranium’s ability to undergo fragmentation and fission, yielding a wealth of isotopes essential for advancing our understanding of nuclear physics and the universe’s fundamental elements. The capacity to harness a high-power uranium beam establishes a new frontier for FRIB, paving the way for innovative research into previously uncharted territories of isotopic science.

The initiating phase of operations has already borne fruit, with FRIB scientists triumphantly producing and identifying three new isotopes—gallium-88, arsenic-93, and selenium-96—within the first eight hours of utilizing the high-power uranium beam. This rapid success underscores the strategic planning and sophisticated technologies implemented at FRIB. Achieving stable operation across all accelerator devices at their highest gradients was instrumental in realizing the high-power uranium beam, marking a significant leap forward in isotope production capabilities.

What enabled this remarkable feat was a combination of modern engineering and innovative methodologies including a state-of-the-art superconducting linear accelerator, which comprises 324 resonators housed within 46 cryomodules, and a newly developed liquid-lithium stripper. These superior technologies culminated in the creation of a powerful uranium beam through advanced mechanisms like the Electron Cyclotron Resonance (ECR) ion source and unique heavy-ion Radio-Frequency Quadrupole (RFQ) systems. Researchers ingeniously employed new techniques allowing for the simultaneous acceleration of different charge states of uranium, a strategic method that significantly contributed to achieving record beam power levels.

The separation and identification of the three previously unnoticed isotopes—gallium-88, arsenic-93, and selenium-96—were conducted using a 1.2 mm graphite target in the Advanced Rare Isotope Separator at FRIB. This groundbreaking work was a collaborative effort involving scientists from the United States, Japan, and South Korea, exemplifying the global commitment in the scientific community to advancing nuclear research. The implications of this milestone extend beyond FRIB; it holds significant potential for future studies in nuclear physics, materials science, and potentially even medicine.

Overall, the accomplishment at FRIB not only emphasizes the complexity and challenges of isotope research but also opens new avenues for discovery, anchored in collaboration and innovation. The facility’s advancements will undoubtedly have lasting impacts, reshaping our approach to exploring the nuclear landscape.

Science

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