LLL model NR-1 tritium sniffer (5 Mar 1975) (Engineering Materials). [34 drawings]
Drawings are given for the LLL NR-1 Radioactive Gas Monitor, an ionization chamber type instrument. In use, a blower draws air through the ionization chamber, and the current produced within the chamber volume is measured by a D.C. electrometer circuit and indicated on a microammeter. Direct calibration in microcuries of tritium per cubic meter of air removes the necessity of referring to a calibration chart in order to convert the current reading to the tritium in air concentration. Although the meter calibration is in microcuries of tritium per cubic meter of air, the instrument is not specific for tritium. When properly calibrated, the Radioactive Gas Monitor may be used to detect and measure atmospheric contamination by other gaseous radioisotopes such as C/sup 14/O/sub 2/, Argon-41, Krypton-85, Radon, etc. The sensitivity to these isotopes is appreciably greater due to their greater disintegration energies.
- Research Organization:
- California Univ., Livermore (USA). Lawrence Livermore Lab.
- OSTI ID:
- 7330422
- Report Number(s):
- CAPE-2528
- Country of Publication:
- United States
- Language:
- English
Similar Records
Argus focus lens mount (12 Jan 1976) (Engineering Materials). [40 drawings]
Hand and shoe monitor (29 Mar 1973) (Engineering Materials). [6 drawings and text]
Related Subjects
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
500300 -- Environment
Atmospheric-- Radioactive Materials Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION MONITORS
AIR SAMPLERS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BLOWERS
CONTAINERS
DESIGN
ELECTRONIC CIRCUITS
FASTENERS
HYDROGEN ISOTOPES
IONIZATION CHAMBERS
ISOTOPES
LABORATORY EQUIPMENT
LIGHT NUCLEI
MEASURING INSTRUMENTS
MONITORING
NUCLEI
ODD-EVEN NUCLEI
RADIATION DETECTORS
RADIATION MONITORING
RADIATION MONITORS
RADIOISOTOPES
SAMPLERS
TRITIUM
TUBES
YEARS LIVING RADIOISOTOPES