Positronic complexes with unnatural parity

Michael Bromley, James Mitroy, K VARGA

    Research output: Contribution to journalArticleResearchpeer-review

    Abstract

    The structure of the unnatural parity states of PsH, LiPs, NaPs, and KPs are investigated with the configuration interaction and stochastic variational methods. The binding energies (in hartree) are found to be 8.17�10-4, 4.42�10-4, 15.14�10-4, and 21.80�10-4, respectively. These states are constructed by first coupling the two electrons into a configuration which is predominantly Pe3, and then adding a p -wave positron. All the active particles are in states in which the relative angular momentum between any pair of particles is at least L=1. The LiPs state is Borromean since there are no three-body bound subsystems (of the correct symmetry) of the (Li+, e-, e-, e+) particles that make up the system. The dominant decay mode of these states will be radiative decay into a configuration that autoionizes or undergoes positron annihilation. � 2007 The American Physical Society.
    Original languageEnglish
    Pages (from-to)62505-62514
    Number of pages10
    JournalPhysical Review A - Atomic, Molecular, and Optical Physics
    Volume75
    Publication statusPublished - 2007

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    parity
    decay
    configurations
    positron annihilation
    configuration interaction
    positrons
    angular momentum
    binding energy
    symmetry
    electrons

    Cite this

    Bromley, Michael ; Mitroy, James ; VARGA, K. / Positronic complexes with unnatural parity. In: Physical Review A - Atomic, Molecular, and Optical Physics. 2007 ; Vol. 75. pp. 62505-62514.
    @article{58116a41e8e746ac8a8921377603aac3,
    title = "Positronic complexes with unnatural parity",
    abstract = "The structure of the unnatural parity states of PsH, LiPs, NaPs, and KPs are investigated with the configuration interaction and stochastic variational methods. The binding energies (in hartree) are found to be 8.17�10-4, 4.42�10-4, 15.14�10-4, and 21.80�10-4, respectively. These states are constructed by first coupling the two electrons into a configuration which is predominantly Pe3, and then adding a p -wave positron. All the active particles are in states in which the relative angular momentum between any pair of particles is at least L=1. The LiPs state is Borromean since there are no three-body bound subsystems (of the correct symmetry) of the (Li+, e-, e-, e+) particles that make up the system. The dominant decay mode of these states will be radiative decay into a configuration that autoionizes or undergoes positron annihilation. � 2007 The American Physical Society.",
    keywords = "Angular momentum, Binding energy, Ground state, Molecular interactions, Molecular structure, Random processes, Positronic complexes, Stochastic variational methods, Positron annihilation",
    author = "Michael Bromley and James Mitroy and K VARGA",
    year = "2007",
    language = "English",
    volume = "75",
    pages = "62505--62514",
    journal = "Physical Review A",
    issn = "1050-2947",
    publisher = "American Physical Society",

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    Bromley, M, Mitroy, J & VARGA, K 2007, 'Positronic complexes with unnatural parity', Physical Review A - Atomic, Molecular, and Optical Physics, vol. 75, pp. 62505-62514.

    Positronic complexes with unnatural parity. / Bromley, Michael; Mitroy, James; VARGA, K.

    In: Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 75, 2007, p. 62505-62514.

    Research output: Contribution to journalArticleResearchpeer-review

    TY - JOUR

    T1 - Positronic complexes with unnatural parity

    AU - Bromley, Michael

    AU - Mitroy, James

    AU - VARGA, K

    PY - 2007

    Y1 - 2007

    N2 - The structure of the unnatural parity states of PsH, LiPs, NaPs, and KPs are investigated with the configuration interaction and stochastic variational methods. The binding energies (in hartree) are found to be 8.17�10-4, 4.42�10-4, 15.14�10-4, and 21.80�10-4, respectively. These states are constructed by first coupling the two electrons into a configuration which is predominantly Pe3, and then adding a p -wave positron. All the active particles are in states in which the relative angular momentum between any pair of particles is at least L=1. The LiPs state is Borromean since there are no three-body bound subsystems (of the correct symmetry) of the (Li+, e-, e-, e+) particles that make up the system. The dominant decay mode of these states will be radiative decay into a configuration that autoionizes or undergoes positron annihilation. � 2007 The American Physical Society.

    AB - The structure of the unnatural parity states of PsH, LiPs, NaPs, and KPs are investigated with the configuration interaction and stochastic variational methods. The binding energies (in hartree) are found to be 8.17�10-4, 4.42�10-4, 15.14�10-4, and 21.80�10-4, respectively. These states are constructed by first coupling the two electrons into a configuration which is predominantly Pe3, and then adding a p -wave positron. All the active particles are in states in which the relative angular momentum between any pair of particles is at least L=1. The LiPs state is Borromean since there are no three-body bound subsystems (of the correct symmetry) of the (Li+, e-, e-, e+) particles that make up the system. The dominant decay mode of these states will be radiative decay into a configuration that autoionizes or undergoes positron annihilation. � 2007 The American Physical Society.

    KW - Angular momentum

    KW - Binding energy

    KW - Ground state

    KW - Molecular interactions

    KW - Molecular structure

    KW - Random processes

    KW - Positronic complexes

    KW - Stochastic variational methods

    KW - Positron annihilation

    M3 - Article

    VL - 75

    SP - 62505

    EP - 62514

    JO - Physical Review A

    JF - Physical Review A

    SN - 1050-2947

    ER -