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Two-photon Doppler-free ultraviolet laser spectroscopy on sulphur atoms
Journal of Physics B: Atomic, Molecular and Optical Physics ( IF 1.6 ) Pub Date : 2020-07-08 , DOI: 10.1088/1361-6455/ab9c37 K-F Lai , E J Salumbides , W Ubachs
Journal of Physics B: Atomic, Molecular and Optical Physics ( IF 1.6 ) Pub Date : 2020-07-08 , DOI: 10.1088/1361-6455/ab9c37 K-F Lai , E J Salumbides , W Ubachs
The 3p 43 P J –3p 3 4p 3 P J transition in the sulphur atom is investigated in a precision two-photon excitation scheme under Doppler-free and collision-free circumstances yielding an absolute accuracy of 0.0009 cm −1 , using a narrowband pulsed laser. This verifies and improves the level separations between amply studied odd parity levels with even parity levels in S I. An improved value for the 3 P 2 – 3 P 1 ground state fine structure splitting is determined at 396.0564 (7) cm −1 . A 34 S– 32 S atomic isotope shift was measured from combining time-of-flight mass spectrometry with laser spectroscopy.
中文翻译:
硫原子的无双光子多普勒紫外激光光谱
使用窄带脉冲激光,在无多普勒和无碰撞的情况下,在精确的双光子激发方案下研究了硫原子中的3p 43 PJ –3p 3 4p 3 PJ跃迁,其绝对精度为0.0009 cm -1。这验证并改善了在S I中经过充分研究的奇偶校验电平与偶数奇偶校验电平之间的电平分离。确定了3 P 2 – 3 P 1基态精细结构分裂的改进值是396.0564(7)cm -1。通过结合飞行时间质谱和激光光谱测量了34 S–32 S的原子同位素位移。
更新日期:2020-07-09
中文翻译:
硫原子的无双光子多普勒紫外激光光谱
使用窄带脉冲激光,在无多普勒和无碰撞的情况下,在精确的双光子激发方案下研究了硫原子中的3p 43 PJ –3p 3 4p 3 PJ跃迁,其绝对精度为0.0009 cm -1。这验证并改善了在S I中经过充分研究的奇偶校验电平与偶数奇偶校验电平之间的电平分离。确定了3 P 2 – 3 P 1基态精细结构分裂的改进值是396.0564(7)cm -1。通过结合飞行时间质谱和激光光谱测量了34 S–32 S的原子同位素位移。