scholarly journals Impact of complex many-body correlations on electron capture in thermally excited nuclei around Ni78

2021 ◽  
Vol 103 (2) ◽  
Author(s):  
Elena Litvinova ◽  
Caroline Robin
Keyword(s):  
Electron Capture ◽  
Many Body ◽  
Excited Nuclei

scholarly journals THEORY FOR SPIN–POLARIZED ELECTRON CAPTURE SPECTROSCOPY IN FERROMAGNETIC NICKEL

1993 ◽  
Vol 07 (01n03) ◽  
pp. 250-254
Author(s):  
W. HÜBNER ◽  
L. M. FALICOV
Keyword(s):  
Electron Capture ◽  
Time Scale ◽  
Nickel Atom ◽  
Time Dependent ◽  
Many Body ◽  
Many Body Theory ◽  
Interaction Terms ◽  
Quantum Numbers ◽  
Spin Polarized ◽  
Body Theory

A time-dependent many-body theory is developed for the study of spin-polarized electron capture spectroscopy. As a model system we choose the head-on collision of protons with a nickel atom. For the electronic part of the Hamiltonian we use the most general on-site interaction terms allowed by atomic symmetry. The total electronic many-body states are group-theoretically classified with respect to the conserved quantum numbers L, L z and S z. The time-dependent Schrödinger equation for this system is solved exactly. The zero-, one- and two- electron capture probabilities which are treated on the same footing are monitored along the trajectories of the scattering species on the femtosecond time scale. In good agreement with experiments on surfaces we find probabilities of 22% and 0.33% for one- and two-electron capture respectively and spin polarizations between -60% and -100%. The predominant capture of minority electrons is enhanced due to electronic correlations. This implies that the probing of magnetism occurs on a significantly longer time scale than the probing of single electron properties.

Novel simulation model for many-body multipole dispersion interactions

1998 ◽  
Vol 94 (3) ◽  
pp. 417-433 ◽  
Author(s):  
MARTIN VAN DER HOEF ◽  
PAUL MADDEN
Keyword(s):  
Simulation Model ◽  
Dispersion Interactions ◽  
Many Body

On the many-body theory of nuclear reactions

1968 ◽  
Vol 111 (1) ◽  
pp. 392-416 ◽  
Author(s):  
K DIETRICH ◽  
K HARA
Keyword(s):  
Nuclear Reactions ◽  
Many Body ◽  
Many Body Theory ◽  
The Many ◽  
Body Theory

MANY-BODY THEORY FOR HYPERFINE EFFECTS IN ATOMS AND MOLECULES

1970 ◽  
Vol 31 (C4) ◽  
pp. C4-99-C4-104
Author(s):  
T. P. DAS ◽  
C. M. DUTTA ◽  
N. C. DUTTA
Keyword(s):  
Many Body ◽  
Atoms And Molecules ◽  
Many Body Theory ◽  
Body Theory

ARGON RECOIL ION ELECTRON CAPTURE FROM NEUTRAL ARGON AND HELIUM STUDIED BY TIME RESOLVED V.U.V. SPECTROSCOPY

1989 ◽  
Vol 50 (C1) ◽  
pp. C1-363-C1-369
Author(s):  
I. LESTEVEN-VAISSE ◽  
M. CHANTEPIE ◽  
F. FOLKMANN ◽  
D. LECLER ◽  
A. BEN SITEL
Keyword(s):  
Electron Capture ◽  
Time Resolved
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