Lines in the spectrum of /sup 7/LiH (4728--5298 A)
The emission spectra of the A/sup 1/..sigma../sup +/--X/sup 1/..sigma../sup +/ bands of /sup 7/LiH were photographed in the 4728A - 5298 A region with a 3.4 meter Ebert Spectrograph of theoretical resolution of about 0.07 cm/sup -1/. High purity /sup 7/LiH crystals were obtained from Oak Ridge National Laboratory. The atomic percent of /sup 7/Li in /sup 7/LiH and /sup 7/LiD was 99.93 percent. The discharge source was a demountable stainless steel hollow cathode lamp. The lithium hydride crystals were packed into the cathode. Pressure in the discharge tube was about 10 to 20 torr of H/sub 2/. The discharge was run at about 600 volts and 1.25 to 1.75 amperes. Acceptable spectra were obtained with exposure time of 6 hours. A Westinghouse iron hollow cathode was used to produce the iron spectrum for calibration. The plates were measured on the Gaertner photoplate comparator with an encoder system and on-line computer service at Argonne National Laboratory. The measured lines in the spectra of /sup 7/LiH are given in this repot /sup 9/COO-2326-19). Similar spectra for /sup 6/LiH and /sup 6/LiD are given in companion reports (COO-2326-17) and (COO-2326-18), respectively. The relative intensities of the lines are applicable only to short regions and do not extend over the whole spectrum.
- Research Organization:
- Iowa Univ., Iowa City (USA). Dept. of Chemistry
- OSTI ID:
- 7122852
- Report Number(s):
- COO-2326-19
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400104 -- Spectral Procedures-- (-1987)
400201* -- Chemical & Physicochemical Properties
640302 -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ALKALI METAL COMPOUNDS
ALKALI METALS
CRYSTALS
ELEMENTS
EMISSION SPECTRA
ENERGY LEVELS
EXCITED STATES
HYDRIDES
HYDROGEN COMPOUNDS
ISOTOPE ENRICHED MATERIALS
LITHIUM
LITHIUM COMPOUNDS
LITHIUM HYDRIDES
METALS
SPECTRA
WAVELENGTHS