Efficient mass-selective three-photon ionization of zirconium atoms
- San Ramon, CA
In an AVLIS process, .sup.91 Zr is selectively removed from natural zirconium by a three-step photoionization wherein Zr atoms are irradiated by a laser beam having a wavelength .lambda..sub.1, selectively raising .sup.91 Zr atoms to an odd-parity E.sub.1 energy level in the range of 16000-19000 cm.sup.-1, are irradiated by a laser beam having a wavelength .lambda..sub.2 to raise the atoms from an E.sub.l level to an even-parity E.sub.2 energy level in the range of 35000-37000 cm.sup.-1 and are irradiated by a laser beam having a wavelength .lambda..sub.3 to cause a resonant transition of atoms from an E.sub.2 level to an autoionizing level above 53506 cm.sup.-1. .lambda..sub.3 wavelengths of 5607, 6511 or 5756 .ANG. will excite a zirconium atom from an E.sub.2 energy state of 36344 cm.sup.-1 to an autoionizing level; a .lambda..sub.3 wavelength of 5666 .ANG. will cause an autoionizing transition from an E.sub.2 level of 36068 cm.sup.-1 ; and a .lambda. .sub.3 wavelength of 5662 .ANG. will cause an ionizing resonance of an atom at an E.sub.2 level of 35904 cm.sup.-1.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- DOE Contract Number:
- W-7405-ENG-48
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Number(s):
- US 5376246
- OSTI ID:
- 869673
- Country of Publication:
- United States
- Language:
- English
Pulsed single-mode laser ionization of hyperfine levels of zirconium-91
|
journal | January 1988 |
The first ionization potential of zirconium atoms determined by two laser, field‐ionization spectroscopy of high lying Rydberg series
|
journal | September 1986 |
Radiative lifetimes, absorption cross sections, and the observation of new high-lying odd levels of ^238U using multistep laser photoionization*
|
journal | January 1976 |
| Physics overview of AVLIS | report | February 1985 |
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Related Subjects
mass-selective
three-photon
ionization
zirconium
atoms
avlis
process
91
zr
selectively
removed
natural
three-step
photoionization
irradiated
laser
beam
wavelength
lambda
raising
odd-parity
energy
level
range
16000-19000
cm
-1
raise
even-parity
35000-37000
resonant
transition
autoionizing
53506
wavelengths
5607
6511
5756
ang
excite
atom
36344
5666
36068
5662
ionizing
resonance
35904
energy level
laser beam
selectively removed
three-step photoionization
selectively remove
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