Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 012703-1-012703-17 |
| Journal | Physical Review A |
| Volume | 79 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 2009 |
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Keywords
- autoionisation
- configuration interactions
- field ionisation
- ion recombination
- positive ions
- resonant states
- Rydberg states
- titanium
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Resonance asymmetry and external field effects in the photorecombination of Ti4+. / Nikolic, D.; Gorczyca, T.W.; Badnell, N.R.
In: Physical Review A, Vol. 79, No. 1, 01.2009, p. 012703-1-012703-17.Research output: Contribution to journal › Article
TY - JOUR
T1 - Resonance asymmetry and external field effects in the photorecombination of Ti4+
AU - Nikolic, D.
AU - Gorczyca, T.W.
AU - Badnell, N.R.
PY - 2009/1
Y1 - 2009/1
N2 - We report on multiconfiguration Breit-Pauli calculations for the photorecombination of Ti4+ ions. Through a detailed comparison with the Test Storage Ring measurements of Schippers , we quantify the interference effects for the broad, asymmetric, near-threshold, highly correlated 3p(5)3d(2)(F-2) resonances. We also discuss the enhanced field ionization effects on recombined 3p(6)nl Rydberg states. This is due to the perturbation of the below-threshold tails of two of the broad 3p(5)3d(2)(F-2) resonances, giving rise to a "forced autoionization" phenomenon, increasing the field ionization effects. By accounting for interference for the lowest n=3,4 resonances, and field effects as n ->infinity, excellent agreement between our computed results and the experimental photorecombination spectrum is obtained.
AB - We report on multiconfiguration Breit-Pauli calculations for the photorecombination of Ti4+ ions. Through a detailed comparison with the Test Storage Ring measurements of Schippers , we quantify the interference effects for the broad, asymmetric, near-threshold, highly correlated 3p(5)3d(2)(F-2) resonances. We also discuss the enhanced field ionization effects on recombined 3p(6)nl Rydberg states. This is due to the perturbation of the below-threshold tails of two of the broad 3p(5)3d(2)(F-2) resonances, giving rise to a "forced autoionization" phenomenon, increasing the field ionization effects. By accounting for interference for the lowest n=3,4 resonances, and field effects as n ->infinity, excellent agreement between our computed results and the experimental photorecombination spectrum is obtained.
KW - autoionisation
KW - configuration interactions
KW - field ionisation
KW - ion recombination
KW - positive ions
KW - resonant states
KW - Rydberg states
KW - titanium
UR - http://dx.doi.org/10.1103/PhysRevA.79.012703
U2 - 10.1103/PhysRevA.79.012703
DO - 10.1103/PhysRevA.79.012703
M3 - Article
VL - 79
SP - 012703-1-012703-17
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
SN - 1050-2947
IS - 1
ER -