Atomic structure of Ni-like soft x-ray lasing ions. Final report, 31 January 1991--23 January 1992

Technical Report · Tue Sep 01 04:00:00 EDT 1992

DOI:https://doi.org/10.2172/10169072· OSTI ID:10169072

Reader, J

The object of this research was to use the GDL laser at the Laboratory for Laser Energetics (LLE) at the University of Rochester to determine the atomic structure of ions of nickel isoelectronic sequence for which lasing in the soft x-ray region has been observed. To accomplish this goal, two experiments were carried out at the LLE. Excellent spectra were photographed for Ni-like ions of the following atoms: Gd, Tb, Dy, Er, Yb, Lu, and Hf. Thousands of spectral lines were observed in these exposures. The plates are now in the process of being measured and analyzed at NIST. In the second experiment, spectra of the following atoms were photographed with a laser energy of about 45 J in green light: Fe, Cd, Ce, Sn, Mo, and Rh. The spectrum of Fe was particularly excellent, evidencing several strong, previously unobserved transitions at about 32 angstroms for the Li-like ion Fe{sup 23}. These transitions are of the type n=3-4, which will be important for determining an accurate ionization energy for this ion. The measurements of the wavelengths for these transitions are being completed at the present time. They will eventually be combined with new measurements of the n=2-2 resonance lines obtained from tokamak observations to produce an improved set of energy levels for Fe{sup 23}. (GH)

• Research Organization: National Inst. of Standards and Technology (IMSE), Gaithersburg, MD (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: FG03-91SF18865
• OSTI ID: 10169072
• Report Number(s): DOE/SF/18865--T1; ON: DE92019273
• Country of Publication: United States
• Language: English

Related Subjects

664400
74 ATOMIC AND MOLECULAR PHYSICS
CADMIUM IONS
CERIUM IONS
DYSPROSIUM IONS
ELECTRONIC STRUCTURE
EXPERIMENTALLY DERIVED INFORMATION ON ATOMIC AND MOLECULAR PROPERTIES
GADOLINIUM IONS
HAFNIUM IONS
IONIZATION
IONIZATION POTENTIAL
IONS
IRON IONS
LASER RADIATION
LUTETIUM IONS
PROGRESS REPORT
SOFT X RADIATION
TERBIUM IONS
TIN IONS
X-RAY SPECTROSCOPY
YTTERBIUM IONS