论文标题
高压丽比德·诺布尔气体混合物的光谱
Spectroscopy of high pressure rubidium-noble gas mixtures
论文作者
论文摘要
在较大的碰撞拓宽制度中，在高压到几个100 bar的高压下，碱性缓冲机混合物的光谱与从碰撞再分配冷却到实验室天体物理学的广泛领域相关。在这里，我们报告了在配备有焊接蓝宝石光学视图的压力电池中记录的密集rubium颗粒气体混合物的光谱测量值，这允许在桌面顶级实验室实验中控制高温和高压的极端条件。在燃气电池中，我们记录了rubium的吸收和发射光谱，约有250 bar氦气缓冲气体在500 K温度下。良好准确性的光谱满足了吸收和发射光谱轮廓比的热力学Kennard- Stepanov频率缩放。此外，电池中的长光路径长度使得在适度的温度和高压下都可以记录rubidium-argon混合物的光谱，并观察该系统中的重新分布激光冷却。
Spectroscopy of alkali-buffer gas mixtures at high pressures from single-digit to several 100 bars in the regime of substantial collisional broadening is relevant in a wide range of fields, ranging from collisional redistribution cooling to laboratory astrophysics. Here we report on spectroscopic measurements of dense rubidium-noble gas mixtures recorded in a pressure cell equipped with soldered sapphire optical viewports, which allows for the controlled realization of extreme conditions of high temperature and high pressure in a table top laboratory experiment. In the gas cell, we have recorded absorption and emission spectra of rubidium subject to 250 bar helium buffer gas pressure at 500 K temperature. The spectra to good accuracy fulfill the thermodynamic Kennard- Stepanov frequency scaling of the ratio of absorption and emission spectral profiles. Further, the long optical path length in the cell allowed to both record spectra of rubidium-argon mixtures at moderate temperatures and high pressures and to observe redistributional laser cooling in this system.
