Progress in zirconium resonance ionization spectroscopy
We have examined the stepwise-resonant free-photon-ionization spectrum of neutral zirconium atoms using three separately-tunable pulsed visible dye lasers. The ground-level (first-step) transitions were chosen on the basis of demonstrated [sup 91]Zr selectivity. Lifetimes of even-parity levels around 36000 cm[sup [minus]1], measured with the delayed-photoionization technique, range from 10 to 100 ns. Direct ionization cross sections appear to be less than 10[sup [minus]17] cm[sup 2]; newly-detected autoionizing levels give peak ionization cross sections (inferred from saturation fluences) up to 10[sup [minus]15] cm[sup 2]. Portions of Rydberg series converging to the 315 and 763 cm[sup [minus]1] levels of Zr[sup +] were identified. Clumps'' of autoionizing levels are thought to be due to Rydberg-valence mixing.
- Research Organization:
- Lawrence Livermore National Lab., CA (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 6856765
- Report Number(s):
- UCRL-JC-112518; CONF-930159-25; ON: DE93011881
- Resource Relation:
- Conference: OE/LASE '93: International Society for Optical Engineering (SPIE) conference, Los Angeles, CA (United States), 16-23 Jan 1993
- Country of Publication:
- United States
- Language:
- English
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