Observation of the <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mn>2</mn><mi>p</mi><mrow><msub><mrow><mi>σ</mi></mrow><mrow><mi mathvariant="normal">u</mi></mrow></msub></mrow><mo>−</mo><mn>1</mn><mi>s</mi><mrow><msub><mrow><mi>σ</mi></mrow><mrow><mi mathvariant="normal">g</mi></mrow></msub></mrow></math></span> Electronic Spectrum of <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">D</mi></mrow><mrow><mn>2</mn></mrow><mrow></mrow><mrow></mrow><mrow><mo>+</mo></mrow><mprescripts></mprescripts></mmultiscripts></mrow></math></span>

The long-range van der Waals state of $D_{2}^{+}$ has been characterized through observations of electronic transitions from the ground state.

DOI:https://doi.org/10.1103/PhysRevLett.61.1573

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Physical Review Letters