Speaker
Description
In this study, laser spectroscopy was successfully performed on a sodium (Na) atomic beam using laser spectroscopic
techniques. By directing a laser beam parallel to a 20 keV Na beam generated from a silicon carbide (SiC) target,
fluorescence variations were measured based on the acceleration voltage of the atomic beam, allowing spectroscopic
signals of 23Na, 22Na and
21Na to be observed. The frequency of the dye laser used for laser spectroscopy was
stabilized to the resonance transition line of Na, shifted by 20 keV, enabling the measurement of ground-state energy
separations and energy level differences among Na isotopes. Furthermore, the energy of the atomic beam was
calculated using the frequency shift of the laser beam relative to the direction of the atomic beam.
The frequency stability of the dye laser used in the spectroscopy was measured to be 0.2 kHz (RMS) in the short term
and less than 2 MHz/h in the long term. Through this research, we established key technologies such as frequency
stabilization of dye lasers, laser spectroscopy of atomic beams, control of atomic beams, and spectroscopic data
processing. These results provide a foundation for high-resolution spectroscopy of various atomic beams generated at
RAON(Rare isotope Accelerator complex for ON-line experiments) in the future.
