A comparison is performed between theoretical and experimental shapes of the
XVV (
X=
M
2,3 and
L
3) Auger spectra of ferromagnetic Fe
x
−Ni
1−x
alloys for
x=0.48 and 0.27 in order to check if recent theories, which take into account the Coulomb correlation between the two final
Auger holes, would be able to reproduce shape and position of the experimental peaks in an accurate way. For the case under
investigation, it seems that, at least for the low-energy (
M
2,3
VV) spectra and notwithstanding the usual neglecting of matrix element effects, the theory gives results in close agreement
with the experimental data. The comparison with the high-energy
L
3
VV spectra is somewhat hampered by an asymmetric broadening of the experimental data on the low kinetic-energy side due to satellite
structures, but still gives good agreement on the high kinetic-energy side.
Si effettua un confronto fra le forme di riga degli spettri Auger
XVV di una lega di Fe−Ni sperimentali e quelle determinate teoricamente, usando teorie recenti che tengono in conto la correlazione
coulombiana fra le due buche Auger. Per il sistema in esame la teoria dà risultati in stretto accordo con i dati sperimentali,
almeno per quanto riguarda gli spettri a bassa energia. Il confronto con i dati sperimentali ad alta energia è in qualche
modo complicato dalla struttura asimmetrica dei picchi sperimentali, dovuta ad effetti satelliti.
PACS. 71.20 Electronic density of states determinations (including energy states of liquid semiconductors)
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