書誌事項
- タイトル別名
-
- Examination on Coloring of Diamonds by Proton Beam Irradiation
- ヨウシセン ショウシャ ニヨル ダイヤモンド ノ チャクショク
この論文をさがす
説明
Cyclotron-treated green diamonds produced historically in foreign countries can be easily identified by shallow color confined to a layer near surface. Homogeneously colored green diamonds by irradiation of high energy electrons using a linear accelerator or fast neutrons using a reseach reactor, can also be identified by a spectrophotometer. These irradiated green diamonds can be changed the color to yellow, orange or light brown by subsequent annealing. A 2.378 carat colorless diamond had been irradiated by high energy electron beam and annealed subsequently. The treated yellow diamond has been irradiated by 18 MeV proton beam using a cyclotron to the culet through a φ3 mm metallic collimator. The diamond becomes bi-color:surrounding the culet is green, the table and the girdle are yellow. According to the experimental results, the green diamonds irradiated by 18 MeV proton beam, exhibit "umbrella mark" around the culet, whereas the green diamonds irradiated by high energy electron beam, do not show such features.
収録刊行物
-
- 宝石学会誌
-
宝石学会誌 21 (1-4), 15-19, 1996
宝石学会（日本）
- Tweet
詳細情報 詳細情報について
-
- CRID
- 1390001205163037184
-
- NII論文ID
- 110003367423
- 110003367492
-
- NII書誌ID
- AN00226317
-
- ISSN
- 21898413
- 03855090
-
- NDL書誌ID
- 4246921
-
- 本文言語コード
- ja
-
- データソース種別
-
- JaLC
- NDL
- CiNii Articles
-
- 抄録ライセンスフラグ
- 使用不可