The structure of triply excited, negative-ion resonances in the autoionizing region of helium

K. W. Trantham; M. Jacka; A. R.P. Raui; S. J. Buckman

doi:10.1088/0953-4075/32/3/021

The structure of triply excited, negative-ion resonances in the autoionizing region of helium

K. W. Trantham^*, M. Jacka, A. R.P. Raui, S. J. Buckman

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

The formation and decay of the two lowest-lying, triply excited He^- resonances in the autoionizing region of the helium spectrum (57-60 eV) have been studied by measuring electron-impact excitation functions for the n = 2 singly excited states of helium as a function of electron scattering angle. These results offer unambiguous confirmation of the classification of these states as He^- 2s 2p2 ²P and 2s2p² ²D, respectively. Furthermore, the observation of the relative strengths of the decay of these features into the various final states enables some speculation as to the structure of the three excited electrons.

Original language	English
Pages (from-to)	815-824
Number of pages	10
Journal	Journal of Physics B: Atomic, Molecular and Optical Physics
Volume	32
Issue number	3
DOIs	https://doi.org/10.1088/0953-4075/32/3/021
Publication status	Published - 14 Feb 1999

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title = "The structure of triply excited, negative-ion resonances in the autoionizing region of helium",

abstract = "The formation and decay of the two lowest-lying, triply excited He- resonances in the autoionizing region of the helium spectrum (57-60 eV) have been studied by measuring electron-impact excitation functions for the n = 2 singly excited states of helium as a function of electron scattering angle. These results offer unambiguous confirmation of the classification of these states as He- 2s 2p2 2P and 2s2p2 2D, respectively. Furthermore, the observation of the relative strengths of the decay of these features into the various final states enables some speculation as to the structure of the three excited electrons.",

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T1 - The structure of triply excited, negative-ion resonances in the autoionizing region of helium

AU - Trantham, K. W.

AU - Jacka, M.

AU - Raui, A. R.P.

AU - Buckman, S. J.

PY - 1999/2/14

Y1 - 1999/2/14

N2 - The formation and decay of the two lowest-lying, triply excited He- resonances in the autoionizing region of the helium spectrum (57-60 eV) have been studied by measuring electron-impact excitation functions for the n = 2 singly excited states of helium as a function of electron scattering angle. These results offer unambiguous confirmation of the classification of these states as He- 2s 2p2 2P and 2s2p2 2D, respectively. Furthermore, the observation of the relative strengths of the decay of these features into the various final states enables some speculation as to the structure of the three excited electrons.

AB - The formation and decay of the two lowest-lying, triply excited He- resonances in the autoionizing region of the helium spectrum (57-60 eV) have been studied by measuring electron-impact excitation functions for the n = 2 singly excited states of helium as a function of electron scattering angle. These results offer unambiguous confirmation of the classification of these states as He- 2s 2p2 2P and 2s2p2 2D, respectively. Furthermore, the observation of the relative strengths of the decay of these features into the various final states enables some speculation as to the structure of the three excited electrons.

UR - https://www.scopus.com/pages/publications/0001707467

U2 - 10.1088/0953-4075/32/3/021

DO - 10.1088/0953-4075/32/3/021

M3 - Article

SN - 0953-4075

VL - 32

SP - 815

EP - 824

JO - Journal of Physics B: Atomic, Molecular and Optical Physics

JF - Journal of Physics B: Atomic, Molecular and Optical Physics

IS - 3

ER -

The structure of triply excited, negative-ion resonances in the autoionizing region of helium

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