We report on photoassociation (PA) spectroscopy of a degenerate Fermi gas of$^{173}$Yb atoms near the dissociation limit of the spin-forbidden${^1}S_0-{^3}P_1$ intercombination transition. An atom-loss spectrum ismeasured from a trapped sample for a spectral range down to $-1$~GHz withrespect to the $f=5/2 \rightarrow f^\prime=7/2$ atomic resonance. The spectrumshows eighty PA resonances, revealing the high nuclear spin nature of thesystem. We investigate the Zeeman effect on the spectrum near a detuning of$-0.8$~GHz, where we examine the quantum numbers of the Zeeman levels usingvarious two-component spin mixture samples. Finally, we measure the atom lossrate under PA light for several pronounced PA resonances.
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机译：我们报告了简并的费米气体$ ^ {173} $ Yb原子的光缔合（PA）光谱，该原子接近自旋禁止的$ {^ 1} S_0-{^ 3} P_1 $相互过渡的解离极限。相对于$ f = 5/2 \ rightarrow f ^ \ prime = 7/2 $原子共振，从捕获的样品测量低至$ -1 $〜GHz光谱范围的原子损失光谱。该光谱显示出80个PA共振，揭示了系统的高核自旋特性。我们研究了在$ -0.8 $〜GHz失谐附近的频谱上的塞曼效应，在此我们使用各种两组分自旋混合物样品检查了塞曼能级的量子数。最后，我们针对几个明显的PA共振测量PA光下的原子损耗率。
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