Generation Mechanism for the Far-Infrared Emission Between Rydberg States of NO
Generation Mechanism for the Far-Infrared Emission Between Rydberg States of NO
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DOI：
10.1007/s10762-022-00866-2
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发表时间：
2022-08
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影响因子：
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通讯作者：
S. Hoshino;Kento Nishimura;Rin Abe;K. Tsukiyama
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作者：
S. Hoshino;Kento Nishimura;Rin Abe;K. Tsukiyama
我们报道了在室温下，由黑体辐射的吸收引发的气相中NO的里德伯态之间的定向远红外发射的产生。所有检测到的跃迁都可分配给thenf→（n− 1）gandn′g→（n′− 1）f跃迁。在本实验中观察到的最长波长为~ 112 µm（2.7 THz），对应于14 f → 13 g跃迁。激光制备的14和15 s态的布居数分别转移到能量较高的13 f和14 f态，产生13 f → 12 gat ~ 88 µm和14 f → 13 gat ~ 112 µm的后续发射。里德伯分子与周围基态分子的碰撞被认为是向上的布居流的原因。14 p和15 p态的布居数分别被输运到能量较低的13 f和14 f态，从而产生13 f → 12 gat ~ 88 µm和14 f → 13 gat ~ 112 µm的后续发射。
We report generation of directional far-infrared emission between Rydberg states of NO in the gas phase initiated by the absorption of black body radiation at room temperature. All the transitions detected are assignable to thenf→ (n− 1)gandn′g→ (n′− 1)ftransitions. The longest wavelength observed in the present experiment was ~ 112 µm (2.7 THz) which corresponds to the 14f→ 13gtransition. The laser-prepared population in the 14sand 15sstates is transferred to the 13fand 14fstates located energetically higher, respectively, which generates the subsequent emission of 13f→ 12gat ~ 88 µm and 14f→ 13gat ~ 112 µm. Collisions of Rydberg molecules with the surrounding ground state molecules are considered to responsible for the upward population flow. The population in the 14pand 15pstates is transported to the 13fand 14fstates located energetically lower, respectively, which gives rise to the subsequent emission of 13f→ 12gat ~ 88 µm and 14f→ 13gat ~ 112 µm.Graphical abstract