Speaker
Description
A high rate of producing nuclear isomers is critical for many applications, like nuclear clocks and nuclear γ-ray lasers etc. However, due to small production cross sections and quick decays, as well as limited intensities of driving beams, it is extremely difficult to achieve a high producing rate via traditional accelerators or reactors. Here, we present a pumping of nuclear isomeric states by a femtosecond hundred-TW tabletop laser. Nuclei populated on the isomer state of 83Kr are observed with a peak efficiency of 2.34E15 particles/s for the first time. This high efficient and universal production method can be widely used for pumping isotopes with excited-state lifetimes down to picoseconds, and could be a benefit for fields like nuclear transition mechanisms and nuclear γ-ray lasers.
