Progress in zirconium resonance ionization spectroscopy

Conference · Tue Dec 29 00:00:00 EST 1992

OSTI ID:10148663

Page, R H; Dropinski, S C; Worden, Jr, E F; Stockdale, J A.D.

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, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 10148663
• 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),13-23 Jan 1993; Other Information: PBD: 29 Dec 1992
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ZIRCONIUM 91
ENERGY-LEVEL TRANSITIONS
RESONANCE IONIZATION MASS SPECTROSCOPY
LASER ISOTOPE SEPARATION
360104
663110
400202
PHYSICAL PROPERTIES
GENERAL AND AVERAGE PROPERTIES OF NUCLEI AND NUCLEAR ENERGY LEVELS
ISOTOPE EFFECTS, ISOTOPE EXCHANGE, AND ISOTOPE SEPARATION