An inelastic threshold in electron - alkali cluster collisions

2001 ◽  
Vol 16 (1) ◽  
pp. 99-102 ◽  
Author(s):  
V. Kasperovich ◽  
K. Wong ◽  
G. Tikhonov ◽  
V.V. Kresin
Keyword(s):  
Inelastic Threshold

scholarly journals NEW PARAMETERIZATION OF THE RESONANT PRODUCTION AMPLITUDES NEAR AN INELASTIC THRESHOLD

2009 ◽  
Vol 24 (02n03) ◽  
pp. 549-552 ◽  
Author(s):  
LEONARD LEŚNIAK
Keyword(s):  
Data Analysis ◽  
Mass Spectra ◽  
Resonant Scattering ◽  
Resonance Pole ◽  
Inelastic Threshold ◽  
Production Processes ◽  
Resonance Properties ◽  
Resonant Production ◽  
Watson Theorem ◽  
Scalar Resonances

New formulae for the resonant scattering and the production amplitudes near an inelastic threshold are derived. It is shown that the Flatté formula, frequently used in experimental analyses, is not sufficiently accurate. Its application to data analysis can lead to a substantial distortion of the effective mass spectra and of the resonance pole positions. A unitary parameterization, satisfying a generalized Watson theorem for the production amplitudes, is proposed. It can be easily applied to study production processes, multichannel meson-meson interactions and the resonance properties, including among others the scalar resonances a0(980) and f0(980).

scholarly journals Extraction of hadron interactions above inelastic threshold in lattice QCD

2011 ◽  
Vol 87 (8) ◽  
pp. 509-517 ◽  
Author(s):  
Sinya AOKI ◽  
Noriyoshi ISHII ◽  
Takumi DOI ◽  
Tetsuo HATSUDA ◽  
Yoichi IKEDA ◽  
...  
Keyword(s):  
Lattice Qcd ◽  
Inelastic Threshold

scholarly journals New formula for a resonant scattering near an inelastic threshold

2008 ◽  
Author(s):  
L. Leśniak ◽  
George Rupp ◽  
Eef van Beveren ◽  
Pedro Bicudo ◽  
Brigitte Hiller ◽  
...  
Keyword(s):  
Resonant Scattering ◽  
Inelastic Threshold ◽  
New Formula

scholarly journals Electron-Hydrogen Phase Shifts Just Below the Inelastic Threshold

1963 ◽  
Vol 10 (6) ◽  
pp. 268-268 ◽  
Author(s):  
A. Temkin ◽  
R. Pohle
Keyword(s):  
Phase Shifts ◽  
Inelastic Threshold

scholarly journals Threshold behaviors in positron scattering from atomic lithium near the first inelastic threshold

2012 ◽  
Vol 388 (7) ◽  
pp. 072014
Author(s):  
F Liu ◽  
Y Cheng ◽  
Y Zhou
Keyword(s):  
Positron Scattering ◽  
Inelastic Threshold

Spin-resolved elastic scattering of electrons from sodium below the inelastic threshold

1991 ◽  
Vol 67 (27) ◽  
pp. 3761-3763 ◽  
Author(s):  
S. R. Lorentz ◽  
R. E. Scholten ◽  
J. J. McClelland ◽  
M. H. Kelley ◽  
R. J. Celotta
Keyword(s):  
Elastic Scattering ◽  
Inelastic Threshold

Resonant electron scattering by atoms

1963 ◽  
Vol 274 (1357) ◽  
pp. 253-266 ◽  
Keyword(s):  
Wave Function ◽  
Electron Scattering ◽  
Atomic Hydrogen ◽  
Resonant State ◽  
Wave Functions ◽  
Exclusion Principle ◽  
Inelastic Threshold ◽  
Atomic Systems ◽  
Resonance Energies ◽  
Resonant Electron

The Kapur-Peierls resonance formalism adapted for electron scattering by atomic systems is modified to allow for the exclusion principle, and a variational principle is derived for calculating the complex resonance energies. The theory is applied to calculate the first four resonance levels in the 1 S state of the electron/atomic hydrogen system by using a trial wave function made up from singleparticle functions which are modified (1 s ), (2 s ) and (2 p ) hydrogen wave functions. We find two levels (at approximately — 13 and — 10 eV) whose widths are of the order of a few volts. There are also two levels (at about — 3 and 0 eV) which have very narrow widths, less than 10 -2 eV, if they occur below the inelastic threshold, shooting up to widths of several volts at threshold. Such a narrow level occurs if the resonant state is energetically unable to decay to a state of the residual atom of which it contains a substantial component.

Geometrical scaling at inelastic threshold

1976 ◽  
Vol 65 (5) ◽  
pp. 475-479 ◽  
Author(s):  
J. Dias De Deus ◽  
T. Shimada
Keyword(s):  
Inelastic Threshold ◽  
Geometrical Scaling

scholarly journals Electron-Hydrogen Phase Shifts Just Below the Inelastic Threshold

1963 ◽  
Vol 10 (1) ◽  
pp. 22-25 ◽  
Author(s):  
A. Temkin ◽  
R. Pohle
Keyword(s):  
Phase Shifts ◽  
Inelastic Threshold
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