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  2. Doubly ionized oxygen - Wikipedia

    en.wikipedia.org/wiki/Doubly_ionized_oxygen

    A Grotrian diagram of doubly ionized oxygen: forbidden transitions in the visible spectrum are shown in green. In astronomy and atomic physics, doubly ionized oxygen is the ion O 2+ (O III in spectroscopic notation).

  3. Molecular orbital diagram - Wikipedia

    en.wikipedia.org/wiki/Molecular_orbital_diagram

    Molecular orbital diagram of dioxygen. Oxygen has a similar setup to H 2, but now we consider 2s and 2p orbitals. When creating the molecular orbitals from the p orbitals, the three atomic orbitals split into three molecular orbitals, a singly degenerate σ and a doubly degenerate π orbital.

  4. File:Valence orbitals of oxygen atom and dioxygen molecule ...

    en.wikipedia.org/wiki/File:Valence_orbitals_of...

    The following other wikis use this file: Usage on id.wikipedia.org Kaidah penggandaan maksimum Hund; Oksigen triplet; Usage on ja.wikipedia.org フントの最大多重度の規則

  5. Ionization - Wikipedia

    en.wikipedia.org/wiki/Ionization

    Feynman diagram for the process of double ionization in an atom through re-scattering mechanism. The re-scattering model in Kuchiev's version (Kuchiev's model) is quantum mechanical. The basic idea of the model is illustrated by Feynman diagrams in figure a. First both electrons are in the ground state of an atom.

  6. Double ionization - Wikipedia

    en.wikipedia.org/wiki/Double_ionization

    Double ionization is a process of formation of doubly charged ions when laser radiation or charged particles like electrons [1], positrons [2] or heavy ions [3] are exerted on neutral atoms or molecules. Double ionization is usually less probable than single-electron ionization. Two types of double ionization are distinguished: sequential and ...

  7. Forbidden mechanism - Wikipedia

    en.wikipedia.org/wiki/Forbidden_mechanism

    In spectroscopy, a forbidden mechanism (forbidden transition or forbidden line) is a spectral line associated with absorption or emission of photons by atomic nuclei, atoms, or molecules which undergo a transition that is not allowed by a particular selection rule but is allowed if the approximation associated with that rule is not made. [1]

  8. Veil Nebula - Wikipedia

    en.wikipedia.org/wiki/Veil_Nebula

    However, an observer can see the nebula clearly in a telescope using an O-III astronomical filter (isolating the wavelength of light from doubly ionized oxygen), as almost all light from this nebula is emitted at this wavelength. An 8-inch (200 mm) telescope equipped with an O-III filter shows the delicate lacework apparent in photographs.

  9. O2 - Wikipedia

    en.wikipedia.org/wiki/O2

    Doubly ionized oxygen (O 2+), an ion; O(2), the 2-dimensional orthogonal group in group theory; O2, an EEG electrode site according to the 10–20 system;