Resonances in the Photo-Ionization Continuum of Ne I (20-150 eV)

K. Codling; R. P. Madden; D. L. Ederer

doi:10.1103/PhysRev.155.26

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Resonances in the Photo-Ionization Continuum of Ne I (20-150 eV)

K. Codling, R. P. Madden, and D. L. Ederer

National Bureau of Standards, Washington, D. C.

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Phys. Rev. 155, 26 – Published 5 March, 1967

DOI: https://doi.org/10.1103/PhysRev.155.26

Abstract

The absorption spectrum of neon in the region 20-150 eV has been studied photographically and photoelectrically, using synchrotron light as a background source. Discrete structure has been observed in three distinct energy ranges. The first is between the ${}^{2}{P^{\circ}}_{\frac{1}{2}, \frac{3}{2}}$ limits near 22 eV, involving resonances analogous to those observed by Beutler in Ar, Kr, and Xe; the second is the region between 44 and 60 eV, the structure here being classified as due to two types of excitation: (i) the excitation of a subshell $2 s$ electron, (ii) the simultaneous excitation of two outer $2 p$ electrons; the third region is near 80 eV, where two weak resonances are observed, due to the simultaneous excitation of a subshell $2 s$ and a $2 p$ electron. The resonance profiles of the states $2 s 2 p^{6} np {}^{1}{P^{\circ}}_{1}$ , where $n = 3, 4, and 5$ , and the two-electron excitation state $2 p^{4} ({}^{3}P) 3 s 3 p {}^{1}{P^{\circ}}_{1}$ have been studied quantitatively and values of $q$ , $Γ$ , and $ρ$ determined for each.

References (19)

R. P. Madden and K. Codling, Phys. Rev. Letters 10, 516 (1963)
U. Fano and J. W. Cooper, Phys. Rev. 137, A1364 (1965)
K. Sewell, J. Opt. Soc. Am. 55, 739 (1965)
J. A. Simpson, S. R. Mielczarek, and J. W. Cooper, J. Opt. Soc. Am. 54, 269 (1964)
M. E. Rudd and D. Lang, in Proceedings of the Fourth International Conference on Physics of Electronic and Atomic Collisions, Quebec, 1965, edited by L. Kerwin and W. Fite (Science Book-crafters, Hastings-on-Hudson, New York, 1965), p. 153
D. L. Ederer and D. H. Tomboulian, Phys. Rev. 133, A1525 (1964)
J. A. R. Samson, J. Opt. Soc. Am. 55, 935 (1965)
K. Codling and R. P. Madden, J. Appl. Phys. 36, 380 (1965)
R. P. Madden and K. Codling, J. Opt. Soc. Am. 54, 268 (1964)
K. Codling and R. P. Madden, Phys. Rev. Letters 12, 106 (1964)
R. P. Madden and K. Codling, Astrophys. J. 141, 364 (1965)
R. P. Madden, D. L. Ederer, and K. Codling, Appl. Opt. 6, 31 (1967)
H. Beutler, Z. Phys. 93, 177 (1935)
U. Fano, Nuovo Cimento 12, 156 (1935)
Atomic Energy Levels, edited by C. E. Moore, Natl. Bur. Stds. (U. S.) Circ. No. 467 (U. S. Government Publishing and Printing Office, Washington, D. C., 1949), Vol. I
A. Weiss (private communication)
S. Goudsmit and L. Gropper, Phys. Rev. 38, 225 (1931)
Omitted endnote
Omitted endnote

[c1] R. P. Madden and K. Codling, Phys. Rev. Letters 10, 516 (1963)

[c2] U. Fano and J. W. Cooper, Phys. Rev. 137, A1364 (1965)

[c3] K. Sewell, J. Opt. Soc. Am. 55, 739 (1965)

[c4] J. A. Simpson, S. R. Mielczarek, and J. W. Cooper, J. Opt. Soc. Am. 54, 269 (1964)

[c5] M. E. Rudd and D. Lang, in Proceedings of the Fourth International Conference on Physics of Electronic and Atomic Collisions, Quebec, 1965, edited by L. Kerwin and W. Fite (Science Book-crafters, Hastings-on-Hudson, New York, 1965), p. 153

[c6] D. L. Ederer and D. H. Tomboulian, Phys. Rev. 133, A1525 (1964)

[c7] J. A. R. Samson, J. Opt. Soc. Am. 55, 935 (1965)

[c8] K. Codling and R. P. Madden, J. Appl. Phys. 36, 380 (1965)

[c9] R. P. Madden and K. Codling, J. Opt. Soc. Am. 54, 268 (1964)

[c10] K. Codling and R. P. Madden, Phys. Rev. Letters 12, 106 (1964)

[c11] R. P. Madden and K. Codling, Astrophys. J. 141, 364 (1965)

[c12] R. P. Madden, D. L. Ederer, and K. Codling, Appl. Opt. 6, 31 (1967)

[c13] H. Beutler, Z. Phys. 93, 177 (1935)

[c14] U. Fano, Nuovo Cimento 12, 156 (1935)

[c15] Atomic Energy Levels, edited by C. E. Moore, Natl. Bur. Stds. (U. S.) Circ. No. 467 (U. S. Government Publishing and Printing Office, Washington, D. C., 1949), Vol. I

[c16] A. Weiss (private communication)

[c17] S. Goudsmit and L. Gropper, Phys. Rev. 38, 225 (1931)

[c18] Omitted endnote

[c19] Omitted endnote

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Resonances in the Photo-Ionization Continuum of Ne I (20-150 eV)

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References (19)

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