ESR signals of zircon irradiated with thermal neutrons and .GAMMA.-rays.
スポンサーリンク
概要
- 論文の詳細を見る
The effect of radioactive radiation on ESR signals of zircon has been studied. Natural zircons and synthetic zircons doped with Ca, U, Al-U, and Ca-P were irradiated with thermal neutrons and γ-rays. ESR measurements performed on these and also on non-irradiated syn-thetic zircons containing various elements, revealed that ESR signals in a range from g=2.000 to g=2.009 are attributed to various radiations and not to impurity ions. Among them, the signal g=2.0083 changes little in intensity with the irradiations and is considered to be related only to α-decay. This has been demonstrated from the nuclear reaction 40Ca (n, α)37 Ar in the Ca-doped zircon. Since the intensity of the signal g=2.0083 in natural zircons is roughly proportional to their fission track age, it is probably caused by disintegration of radioactive elements in the zircons. The other signals with g=2.0001, 2.0010, 2.0018. and 2.0030. become stronger in intensity after the neutron and γ-ray irradiations.
- 日本鉱物科学会の論文
日本鉱物科学会 | 論文
- シリケイトメルト中の水の拡散
- 岡山市北西部, 日近花崗閃緑岩体の岩石記載および全岩化学組成
- 高エネルギー陽子マイクロビームによる鉱物中の水素定量分析法の開発
- 日本海竹島海山(仮称)のかんらん岩捕獲岩の成因とその意義
- 高輝度 高指向 連続光・直線偏光の単結晶X線回折への恩恵