Table 2 Observed transitions originating from one excited state of Eu−, in eV.

From: Direct experimental observation of weakly-bound character of the attached electron in europium anion

Band

Binding energy (eV)

Paired peak

Binding energy (eV)

ΔE (eV)

A'

1.650

A

1.725

0.075

A1'

1.672

A1

1.746

0.074

A2'

1.699

A2

1.773

0.074

C'

1.920

C

1.995

0.075

C2'

1.950

C2

2.024

0.074

B2'

1.967

B2

2.044

0.077

  1. Experimental binding energies (BEs) have an uncertainty of ± 0.013 eV. ΔE represent the energy differences between peaks A' and A, A1' and A1, A2' and A2 and so on.
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