THE SPECTROGRAPHIC DETERMINATION OF URANIUM 235. PART V. ROUTINE APPLICATION OF A MULTIPLE HOLLOW CATHODE SOURCE ASSEMBLY AND A DIRECT-READING, LITTROW, GRATING SPECTROGRAPH
The routine application of a rapid, high-precision procedure and a high resolution spectrograph to the isotopic analysis of uranium is described. The procedure, which evolved from previous developments, includes a simple sample preparation and a hollow cathode source designed for rapid sample changing. The procedure also involves a high degree of automation, and eliminates the reference measurement and background correction. The precision at the level of naturally occurring uranium (0.7115% U/sup 235/), measured under routine conditions, is plus or minus 2.1% of the amount present, for a single cathode determination expressed at the 95% confidence interval. In the vicinity of 90% U/sup 235/ the precision is 0.07% of the amount present, for a single cathode determination. Approximately 7 1/2 mins is required for a determination, including sample preparation, measurement, and calculations. The maximum capacity of the instrument is over 60 samples per 8 hr day; the instrument is presentiy applied to a routine load varying from 20 to 50 samples per day. In addition to the U/ sup 235/ determination, a preliminary calibration and evaluation for U/sup 236/ is included. (auth)
- Research Organization:
- Oak Ridge Gaseous Diffusion Plant, Tenn.
- DOE Contract Number:
- W-7405-ENG-26
- NSA Number:
- NSA-16-028873
- OSTI ID:
- 4795092
- Report Number(s):
- TID-12769
- Country of Publication:
- United States
- 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
A SLOW-SCAN DIRECT-READING SPECTROMETER FOR URANIUM ISOTOPE ANALYSIS USING A WATER-COOLED HOLLOW CATHODE SOURCE