Optical efficiency for fission-fragment track counting in Muscovite Solid-State Track Recorders
In order to determine absolute fission rates from thin actinide deposits placed in direct contact with Muscovite Solid-State Track Recorders, it is necessary to know the efficiency with which fission-fragment tracks are recorded. In this paper, a redetermination of the optical efficiency, i.e., the fraction of fission events recorded and observed in the Muscovite, is reported. The value obtained from a well-calibrated thin deposit of /sup 252/Cf and Muscovite etched about 90 min. in 49% HF at room temperature, is 0.9875 +- 0.0085. Manual counting was used. Preliminary results from a deposit of /sup 242/Pu are also reported, along with preliminary comparisons of track counting with an automated system. Reasons for the discrepancy of the optical efficiency reported here with an earlier measurement are also reported. 5 references, 1 figure, 3 tables.
- Research Organization:
- Hanford Engineering Development Lab., Richland, WA (USA)
- DOE Contract Number:
- AC06-76FF02170
- OSTI ID:
- 5625168
- Report Number(s):
- HEDL-SA-2864-FP; CONF-830969-6; ON: DE84001477
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ABSOLUTE COUNTING
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
CALIFORNIUM 252
CALIFORNIUM ISOTOPES
COUNTING TECHNIQUES
DATA
DIELECTRIC TRACK DETECTORS
EFFICIENCY
EVEN-EVEN NUCLEI
EXPERIMENTAL DATA
FISSION FRAGMENTS
HEAVY NUCLEI
INFORMATION
ISOTOPES
MEASURING INSTRUMENTS
MICA
MINERALS
MUSCOVITE
NUCLEAR FRAGMENTS
NUCLEI
NUMERICAL DATA
PARTICLE TRACKS
PLUTONIUM 242
PLUTONIUM ISOTOPES
RADIATION DETECTORS
RADIOISOTOPES
SILICATE MINERALS
YEARS LIVING RADIOISOTOPES