Development of cesium laser resonance ionization schemes for PLASEN experiment

【摘要】 To study the nuclear properties and deformation of neutron-rich cesium isotopes in their ground and isomeric states at the Beijing Rare Isotope Beam Facility(BRIF),optimal resonance ionization schemes and experimental conditions must be predetermined.In this study,we evaluated several three-step laser resonance ionization schemes for cesium atoms by accessing their ionization efficiency and spectral resolution under varying measurement conditions using high-resolution and high-sensitivity collinear resonance ionization spectroscopy system.Hence,we identified the currently most efficient resonance ionization scheme and optimal experimental conditions,achieving an overall measurement efficiency of 1:400 with a spectral resolution of about 100 MHz.Under this condition,the extracted hyperfine structure parameters of 133 Cs showed excellent agreement with previously reported values.This study establishes a solid foundation for the forthcoming online measurement of neutron-rich cesium isotopes at BRIF.更多还原

【Abstract】 To study the nuclear properties and deformation of neutron-rich cesium isotopes in their ground and isomeric states at the Beijing Rare Isotope Beam Facility(BRIF),optimal resonance ionization schemes and experimental conditions must be predetermined.In this study,we evaluated several three-step laser resonance ionization schemes for cesium atoms by accessing their ionization efficiency and spectral resolution under varying measurement conditions using high-resolution and high-sensitivity collinear resonance ionization spectroscopy system.Hence,we identified the currently most efficient resonance ionization scheme and optimal experimental conditions,achieving an overall measurement efficiency of 1:400 with a spectral resolution of about 100 MHz.Under this condition,the extracted hyperfine structure parameters of 133 Cs showed excellent agreement with previously reported values.This study establishes a solid foundation for the forthcoming online measurement of neutron-rich cesium isotopes at BRIF.更多还原