RADIOCARBON DATING
The development of radiocarbon dating procedures is reviewed. Basic principles and counting techniques are discussed and a method is described for measuring the radioactivity of C/sup 14/ directly. The sample is converted by chemical methods into a suitable form, such as carbon dioxide, acetylene gas, or solid carbon, which is placed inside a shielded Geiger or proportional counter, where it constitutes the gas or lies on the inner counter wall. In this way a maximum count rate is achieved using relatively inexpensive equipment. Data are included on the natural abundance of radiocarbon in the earth, radiocarbon genesis and mixing, the activity of samples from the terrestrial biosphere, the radiocarbon content of various archeological specimens of known age, the age of a nuinber of human occupation sites in America, and the age of a variety of archeological specimens as determined by radiocarbon dating procedures. Applications of radiocarbon dating procedures in the fields of archeology, geology, meteorology, and oceanography are discussed. (C.H.)
- Research Organization:
- Univ. of California, Los Angeles
- NSA Number:
- NSA-15-010611
- OSTI ID:
- 4094389
- Journal Information:
- Science See Saiensu, Journal Name: Science See Saiensu Vol. Vol: 133; ISSN SIENDS1
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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AGE ESTIMATION
ALPHA PARTICLES
ARCHAEOLOGY
CARBON
CARBON 14
CARBON DIOXIDE
CHEMICAL REACTIONS
ELECTRIC CHARGES
ENERGY
GEIGER-MUELLER COUNTERS
GENERAL AND MISCELLANEOUS
GEOLOGY
ION BEAMS
IONS
MEASURED VALUES
METEOROLOGY
NEON
NITROGEN
NUCLEAR EMULSIONS
OCEANOGRAPHY
OXYGEN
PROPORTIONAL COUNTERS
QUANTITY RATIO
SEA
SLOWDOWN