| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10730253 | Applied Radiation and Isotopes | 2005 | 4 Pages |
Abstract
Natural methane hydrate under deep ocean floor in Ocean Drilling Program (ODP) Leg 164 was studied by electron spin resonance (ESR) after γ-ray irradiation. The methyl radical (g=2.0024±0.0005, A=2.3±0.1mT) as well as an unidentified signal was observed. Although the parameters and the thermal stability were very similar to those in a synthetic sample, the signal intensity was about one eightieth of that in synthetic one because methane hydrate had partially changed to ice. ESR signal intensity of the methyl radical after γ-ray irradiation could be used to estimate the amount of methane hydrate in a sample mixed with ice.
Related Topics
Physical Sciences and Engineering
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Radiation
Authors
Kei Takeya, Atsushi Tani, Takeshi Yada, Motoji Ikeya,