Accelerated Uranium Beams with Record Power



 A new milestone in isotope study has been reached. Scientists at the Facility for Rare Isotope Beams (FRIB) are working with a high-powered beam of uranium ions. The team accelerated the beam to an amazing 10.4 kilowatts of continuous beam power. The study was published in the journal Physical Review Accelerators and Beams.

Of all the elements, uranium is the most difficult to accelerate. It is, however, extremely important to research. The National Academy of Sciences and the Nuclear Science Advisory Committee has identified 17 programs with rare isotope beams. About half of the programs require a uranium primary beam. Scientists understand the value of uranium, as it creates a diverse selection of isotopes after fission or fragmentation. 

FRIB has had a major milestone establishing the acceleration of a uranium beam with unequaled power. The advancement opens new door to research with rare isotopes. Within eight hours of beginning operations, three new isotopes were identified, gallium-88, arsenic-93, and selenium-96.There are two requirements to the high powered uranium beam, stable operation and extremely high accelerating gradients. This achievement creates a new path forward into the nuclear world. 

The accelerator at FRIB has created the highest power accelerated continuous wave uranium beam ever seen!

 This beam led to the identification of three previously unknown isotopes. The team at FRIB has several new reasons for the success of the beam. There is a new superconducting linear accelerator. It is made up for 324 resonators in 46 cryomodules. The beam has a new liquid-lithium stripper. It also has technologies such as uranium production in the Electron Cyclotron Resonance (ECR) ion source. It uses a unique heavy-ion Radio Frequency Quadrupole (RFQ).

Researchers first stripped uranium with the liquid-lithium film. They were then able to develop new techniques to set up the simultaneous acceleration of three charge states of uranium.

This approach is a winner.  It created a record high power for uranium. The work was a large collaboration of scientists from South Korea, Japan and the United States. 

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