THE SPECTROGRAPHIC DETERMINATION OF URANIUM 235. PART IV. USING A DIRECT READING, LITTROW, GRATING SPECTROGRAPH AND A HOLLOW CATHODE
The use of a hollow cathode source and a 4-m, directreading, Bausch and Lomb high-resolution spectrograph for the isotopic analysis of uranium is described. A relative precision of plus or minus 3.0%, expressed at the 95% confidence level, was obtained with naturally occurring uranium for a single cathode determination of U/sup 235/ measured in twenty min. Evidence for a weak uranium line structure interfering with the U/sup 235/ measurement is presented. Minor isotopes, U/sup 234/ and U/sup 236/, present up to a few percent at the higher U/sup 235/ concentrations, did not interfere with U/sup 235/ measurements. Measurements of U/sup 234/ however, could not be made in the presence of high U/ sup 235/ concentrations, thereby limitinp the determination of total uranium necessary for calculating the percent U/sup 235/. At the lower U/sup 235/ coccentrations, the concentrations of minor isotopes are generally too small to significantly affect the total uranium content of the sample. (auth)
- Research Organization:
- Oak Ridge Gaseous Diffusion Plant, Tenn.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-15-032111
- OSTI ID:
- 4838519
- Journal Information:
- Appl. Spectroscopy, Journal Name: Appl. Spectroscopy Vol. Vol: 15: No. 4
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
Similar Records
THE SPECTROGRAPHIC DETERMINATION OF URANIUM 235. PART III. USE OF A MULTIPLE HOLLOW CATHODE SOURCE ASSEMBLY AND A 22 FOOT DIRECT READING EAGLE SPECTROGRAPH
SPECTROGRAPHIC ASSAY OF U$sup 235$ WITH THE ECHELLE SPECTROGRAPH