论文标题
$ b^3σ^+的表征，v = 0 $状态及其与铝单氟化铝中的$ a^1π$状态的互动
Characterisation of the $b^3Σ^+, v=0$ State and Its Interaction with the $A^1Π$ State in Aluminium Monofluoride
论文作者
论文摘要
最近，我们确定了与激光冷却和捕获实验有关的$ x^1σ^+$，$ a^1π$和$ a^3π$状态的详细能量水平结构。在这里，我们研究了$ b^3σ^+，v = 0 $ alf分子状态。出现了$ b^3σ^+的旋转（1+2）-REMPI光谱，V'= 0 \ leftArolW a^3π，v'= 0 $ band呈现，并且$ b^3σ^+，v = 0 $状态的寿命为190（2）〜ns。 $ b^3σ^+的超精细分辨，激光诱导的荧光光谱，v'= 0 \ leftarrow x^1σ^+，v'= 1 $和$ b^3σ^+，v'= 0 \ leftArolOw a^3π，v'= 0 $ bands可记录fine fine fine fine-n = 0 $。研究了$ b^3σ^+，v = 0 $与附近的$ a^1π$状态之间的相互作用，并使用三种独立的方法得出两个电子状态之间的自旋轨道耦合的大小，以提供10（1）〜cm $^{ - 1} $的一致值。 $ a $ state的三胞胎字符导致$ a \ rightarrow从主要$ a-x $激光冷却周期损失10 $^{ - 6} $级别。
Recently, we determined the detailed energy level structure of the $X^1Σ^+$, $A^1Π$ and $a^3Π$ states of AlF that are relevant to laser cooling and trapping experiments. Here, we investigate the $b^3Σ^+, v=0$ state of the AlF molecule. A rotationally-resolved (1+2)-REMPI spectrum of the $b^3Σ^+, v'=0 \leftarrow a^3Π, v''=0$ band is presented and the lifetime of the $b^3Σ^+, v=0$ state is measured to be 190(2)~ns. Hyperfine-resolved, laser-induced fluorescence spectra of the $b^3Σ^+, v'=0 \leftarrow X^1Σ^+, v''=1$ and the $b^3Σ^+, v'=0 \leftarrow a^3Π, v''=0$ bands are recorded to determine fine- and hyperfine structure parameters. The interaction between the $b^3Σ^+, v=0$ and the nearby $A^1Π$ state is studied and the magnitude of the spin-orbit coupling between the two electronic states is derived using three independent methods to give a consistent value of 10(1)~cm$^{-1}$. The triplet character of the $A$ state causes an $A\rightarrow a$ loss from the main $A-X$ laser cooling cycle below the 10$^{-6}$ level.
