Angle and Channel Dependence of Resonances in <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>e</mi></math></span>-He Scattering near 60 eV

J. Arol Simpson; M. G. Menendez; S. R. Mielczarek

doi:10.1103/PhysRev.150.76

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Angle and Channel Dependence of Resonances in $e$ -He Scattering near 60 eV

J. Arol Simpson, M. G. Menendez, and S. R. Mielczarek

National Bureau of Standards, Washington, D. C.

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Phys. Rev. 150, 76 – Published 7 October, 1966

DOI: https://doi.org/10.1103/PhysRev.150.76

Abstract

The ${He}^{-}$ resonances at 57.1 and 58.2 eV in the electron scattering from He were studied as a function of angle in three inelastic channels corresponding to excitation of the $(1 s 2 s) {}^{3}S$ , $(1 s 2 s) {}^{1}S$ , and $(1 s 2 p) {}^{1}P$ states of He. The line shapes of the resonances are found to vary with angle. The application of the Fano-Cooper formula, developed for the case of photon absorption, to resonances in inelastic electron scattering is discussed, along with a simple procedure for determining the line profile indices. The angular dependence of the ${}^{1}S$ , ${}^{3}S$ , and ${}^{1}P$ excitations at 56.5 eV was also measured out to about 60°.

References (14)

G. E. Chamberlain, Phys. Rev. Letters 14, 581 (1965)
G. E. Chamberlain and H. G. M. Heideman, Phys. Rev. Letters 15, 337 (1965)
Omitted endnote
G. J. Schulz, Phys. Rev. 135, A988 (1964) H. G. M. Heideman, C. E. Kuyatt, and G. E. Chamberlain, J. Chem. Phys. 44, 440 (1966)
G. J. Schulz, [4] H. G. M. Heideman, C. E. Kuyatt, and G. E. Chamberlain, J. Chem. Phys. 44, 355 (1966)
C. E. Kuyatt, J. A. Simpson, and S. R. Mielczarek, Phys. Rev. 138, A385 (1965)
J. A. Simpson, Rev. Sci. Instr. 35, 1698 (1964)
J. A. Simpson, G. E. Chamberlain, and S. R. Mielczarek, Phys. Rev. 139, A1039 (1965)
U. Fano and J. W. Cooper, Phys. Rev. 138, A400 (1965)
U. Fano, Phys. Rev. 124, 1866 (1961)
U. Fano (private communication)
M. Blatt and V. F. Weisskopf, Theoretical Nuclear Physics (John Wiley & Sons, Inc., New York, 1952)
U. Fano and J. W. Cooper, Phys. Rev. 137, A1364 (1965)
J. W. Cooper (private communication)

[c1] G. E. Chamberlain, Phys. Rev. Letters 14, 581 (1965)

[c2] G. E. Chamberlain and H. G. M. Heideman, Phys. Rev. Letters 15, 337 (1965)

[c3] Omitted endnote

[c4] G. J. Schulz, Phys. Rev. 135, A988 (1964) H. G. M. Heideman, C. E. Kuyatt, and G. E. Chamberlain, J. Chem. Phys. 44, 440 (1966)

[c5] G. J. Schulz, [4] H. G. M. Heideman, C. E. Kuyatt, and G. E. Chamberlain, J. Chem. Phys. 44, 355 (1966)

[c6] C. E. Kuyatt, J. A. Simpson, and S. R. Mielczarek, Phys. Rev. 138, A385 (1965)

[c7] J. A. Simpson, Rev. Sci. Instr. 35, 1698 (1964)

[c8] J. A. Simpson, G. E. Chamberlain, and S. R. Mielczarek, Phys. Rev. 139, A1039 (1965)

[c9] U. Fano and J. W. Cooper, Phys. Rev. 138, A400 (1965)

[c10] U. Fano, Phys. Rev. 124, 1866 (1961)

[c11] U. Fano (private communication)

[c12] M. Blatt and V. F. Weisskopf, Theoretical Nuclear Physics (John Wiley & Sons, Inc., New York, 1952)

[c13] U. Fano and J. W. Cooper, Phys. Rev. 137, A1364 (1965)

[c14] J. W. Cooper (private communication)

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Angle and Channel Dependence of Resonances in $e$ -He Scattering near 60 eV

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Angle and Channel Dependence of Resonances in e-He Scattering near 60 eV

Abstract

References (14)

Angle and Channel Dependence of Resonances in $e$ -He Scattering near 60 eV