TY - JOUR
T1 - Many-electron dynamics in high-order harmonic generation of niobium
T2 - A time-dependent density-functional-Theory study
AU - Chu, Xi
AU - Groenenboom, Gerrit C.
N1 - Publisher Copyright:
© 2022 American Physical Society.
PY - 2022/5
Y1 - 2022/5
N2 - The strong-field many-electron dynamics is studied via the resonance-enhanced high-order harmonic generation (HHG) of niobium. In intense IR lights excited states of Nb with the configuration 4d35snp play a vital role in the enhanced HHG below the ionization potential, even though the electron initially occupying the 5s orbital is the most active. The energies of these states increase linearly with the laser intensity, which causes the effective ionization potential to increase as well. Above the ionization potential, many-electron effects may cause an electronic state of Nb to be in resonance with that of Nb+, which leads to enhanced HHG and which influences the tunneling ionization as well.
AB - The strong-field many-electron dynamics is studied via the resonance-enhanced high-order harmonic generation (HHG) of niobium. In intense IR lights excited states of Nb with the configuration 4d35snp play a vital role in the enhanced HHG below the ionization potential, even though the electron initially occupying the 5s orbital is the most active. The energies of these states increase linearly with the laser intensity, which causes the effective ionization potential to increase as well. Above the ionization potential, many-electron effects may cause an electronic state of Nb to be in resonance with that of Nb+, which leads to enhanced HHG and which influences the tunneling ionization as well.
UR - http://www.scopus.com/inward/record.url?scp=85130315972&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.105.053110
DO - 10.1103/PhysRevA.105.053110
M3 - Article
AN - SCOPUS:85130315972
SN - 2469-9926
VL - 105
JO - Physical Review A
JF - Physical Review A
IS - 5
M1 - 053110
ER -