Doubly charged Negative Ions of Oxygen, Fluorine, Chlorine and Bromine

Stuckey, W. K.; Kiser, Robert W.

doi:10.1038/211963c0

Cited by 40 publications

(9 citation statements)

References 3 publications

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“…The possible existence of stable or long-lived doubly negatively charged atomic ions X 2− has attracted interest for several decades [1][2][3][4][5][6]. While this question has been a contentious issue during certain periods [2,3], nowadays the nonexistence of such ions seems to be generally accepted [4].…”

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confidence: 99%

On the maximal electronic charge bound by atomic nuclei

Hogreve

1998

J. Phys. B: At. Mol. Opt. Phys.

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Motivated by the stability problem for doubly charged negative atomic ions, we study the minimal charge Z cr (N) required for an atomic nucleus to bind N electrons. Employing large and diffuse basis sets and multireference configuration interaction computations, Z cr (N ) is determined for systems up to N = 19 corresponding to elements from the lowest three periods of the periodic table. For those elements X considered here, our results rule out the stability of X 2− , and give strong evidence that no other stable atomic dianions exist.

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confidence: 99%

On the maximal electronic charge bound by atomic nuclei

Hogreve

1998

J. Phys. B: At. Mol. Opt. Phys.

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“…Baker et al [42] veriÐed numerically that does coin-Z c (2) cide with Z*, the parameter value limiting the radius of convergence of the series in (4). Based on large-scale computations and in accordance with arguments of a complex scaling analysis [43], this disproves existence of ""bound states imbedded into the continuumÏÏ for Z v [Z*, conjectured by Stillinger [44] from the outcome Z* \ Z c ], of earlier less precise numerical work [45].…”

Section: Discussionmentioning

confidence: 96%

Extraction of Pulsed Ion Beams from an Anode Covered with Liquid Material

Kitamura¹,

Yano

1982

Jpn. J. Appl. Phys.

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Destabilization of atomic anions is studied for the ground 1S and Ðrst excited state 3P of the ten-electron system. Using large and di †use basis sets, conÐguration-interaction calculations show that for decreasing nuclear charge Z the ground state 1S is absorbed into the continuous spectrum at the critical parameter value and the triplet state at Z c (1S) B 8.74 e 0 , This implies instability of the di-anion O2~and excludes Z c (3P) \ 9 e 0 . existence of stable excited bound states of F~. The numerical results give strong evidence of di †erent absorption mechanisms into the continuum for 1S and 3P, involving zero-energy threshold bound or virtual states, respectively. Arguments from the rigorous theory of Schro dinger operators lead to the expectation that the observed phenomena are manifestations of more universal properties common to all anionic systems.

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“…A theory of dissociative attachment (1164) and thermal energy dissociative attachment of negative ions (522) are presented. It is reported that doubly-charged negative ions have been formed and studied with an omegatron mass spectrometer (569,1412,1413), and the existence of negatively-charged beryllium and magnesium ions is noted (144) Lithium negative ions have been produced in a Penning discharge (114), and negative ions are produced from the ion bombardment of solid surfaces (76).…”

Section: Negative Ionsmentioning

confidence: 99%

“…Doubly-charged transition metal carbonyl ions have been observed (1576) and their intensities related to the normal singly-charged positive ion mass spectra. Doubly-charged negative ions (569,1412,1413) are the subject of both experimental and theoretical interest. Triply-charged ions are observed in the mass spectrum of tripty-cene (242) and metastable transitions of triply-charged ions (799) have been reported.…”

Section: Negative Ionsmentioning

confidence: 99%