Degenerate Siegert states

1988 ◽  
Vol 29 (10) ◽  
pp. 2250-2253
Author(s):  
David L. Huestis
Keyword(s):  
Siegert States

Atomic Siegert states in a rotating electric field

2021 ◽  
Vol 104 (2) ◽  
Author(s):  
Tor Kjellsson Lindblom ◽  
Oleg I. Tolstikhin ◽  
Toru Morishita
Keyword(s):  
Electric Field ◽  
Siegert States

Atomic Siegert states in an electric field: Transverse momentum distribution of the ionized electrons

2010 ◽  
Vol 82 (2) ◽  
Author(s):  
Pavel A. Batishchev ◽  
Oleg I. Tolstikhin ◽  
Toru Morishita
Keyword(s):  
Transverse Momentum ◽  
Electric Field ◽  
Momentum Distribution ◽  
Transverse Momentum Distribution ◽  
Siegert States

The unimolecular dissociation of HCO. IV. Variational calculation of Siegert states

1999 ◽  
Vol 110 (20) ◽  
pp. 9887-9897 ◽  
Author(s):  
Hans-Martin Keller ◽  
Reinhard Schinke
Keyword(s):  
Variational Calculation ◽  
Unimolecular Dissociation ◽  
Siegert States

Molecular Siegert states in an electric field. II. Transverse momentum distribution of the ionized electrons

2014 ◽  
Vol 89 (3) ◽  
Author(s):  
Vinh N. T. Pham ◽  
Oleg I. Tolstikhin ◽  
Toru Morishita
Keyword(s):  
Transverse Momentum ◽  
Electric Field ◽  
Momentum Distribution ◽  
Transverse Momentum Distribution ◽  
Siegert States

Molecular Siegert states in an electric field

2012 ◽  
Vol 86 (1) ◽  
Author(s):  
Linda Hamonou ◽  
Toru Morishita ◽  
Oleg I. Tolstikhin
Keyword(s):  
Electric Field ◽  
Siegert States

Spectroscopic aspects of subthreshold Siegert states

2018 ◽  
Vol 33 (26) ◽  
pp. 1850149
Author(s):  
Horia Comişel ◽  
Cornel Haţegan ◽  
Remus A. Ionescu ◽  
Hermann H. Wolter
Keyword(s):  
Decay Channel ◽  
Logarithmic Derivative ◽  
Strength Function ◽  
State Dependence ◽  
Bound State ◽  
R Matrix ◽  
S Matrix ◽  
Subthreshold Resonance ◽  
Asymptotic Normalization Constant ◽  
Siegert States

The Siegert states are approached in the framework of Bloch–Lane–Robson theory of quantum collisions. Both the bound and the quasi-stationary Siegert states are subject of the equation relating the channel R-matrix element to the logarithmic derivative. The Siegert state dependence on the decay channel parameters results in channel renormalization of reduced widths, especially near threshold. The neutron subthreshold and the electron Rydberg states are examples of subthreshold Siegert states. The Siegert approach results in Heisenberg’s S-matrix formula for the bound state and the subthreshold resonance. The Siegert state residue is a spectroscopic asymptotic normalization constant. The decay width of the electron Rydberg channel resonance is, up to a factor, the electron strength function.

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