Abstract
Complex-basis-function techniques are used to implement the equations of the random-phase approximation (RPA) in matrix form. This approach allows the direct extraction of total photoionization cross sections from a finite series of (complex) transition energies and oscillator strengths. The RPA is an effective means for including electron correlation effects on the photoionization of closed-shell atoms and molecules. The procedure demonstrated here provides a rigorous way of solving the RPA equations for continuum photoabsorption without resorting to numerical integration. The results of calculations on He and N2 are presented. Correlation effects are found to significantly influence the threshold behavior of the N2 photoionization cross sections.
| Original language | English |
|---|---|
| Pages (from-to) | 3146-3151 |
| Number of pages | 6 |
| Journal | Physical Review A |
| Volume | 36 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 1987 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
Cite this
Complex-basis-function treatment of photoionization in the random-phase approximation. / Yabushita, Satoshi; McCurdy, C. W.; Rescigno, T. N.
In: Physical Review A, Vol. 36, No. 7, 1987, p. 3146-3151.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Complex-basis-function treatment of photoionization in the random-phase approximation
AU - Yabushita, Satoshi
AU - McCurdy, C. W.
AU - Rescigno, T. N.
PY - 1987
Y1 - 1987
N2 - Complex-basis-function techniques are used to implement the equations of the random-phase approximation (RPA) in matrix form. This approach allows the direct extraction of total photoionization cross sections from a finite series of (complex) transition energies and oscillator strengths. The RPA is an effective means for including electron correlation effects on the photoionization of closed-shell atoms and molecules. The procedure demonstrated here provides a rigorous way of solving the RPA equations for continuum photoabsorption without resorting to numerical integration. The results of calculations on He and N2 are presented. Correlation effects are found to significantly influence the threshold behavior of the N2 photoionization cross sections.
AB - Complex-basis-function techniques are used to implement the equations of the random-phase approximation (RPA) in matrix form. This approach allows the direct extraction of total photoionization cross sections from a finite series of (complex) transition energies and oscillator strengths. The RPA is an effective means for including electron correlation effects on the photoionization of closed-shell atoms and molecules. The procedure demonstrated here provides a rigorous way of solving the RPA equations for continuum photoabsorption without resorting to numerical integration. The results of calculations on He and N2 are presented. Correlation effects are found to significantly influence the threshold behavior of the N2 photoionization cross sections.
UR - http://www.scopus.com/inward/record.url?scp=0041338585&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0041338585&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.36.3146
DO - 10.1103/PhysRevA.36.3146
M3 - Article
AN - SCOPUS:0041338585
VL - 36
SP - 3146
EP - 3151
JO - Physical Review A
JF - Physical Review A
SN - 2469-9926
IS - 7
ER -