查詢結果分析
相關文獻
- Absorption Spectra of Gamma-Irradiated Borate Glasses Containing Vanadium
- On the Study of the Void Effects on the Distributions of Neutron Fluxex and Gamma Ray Dose Rates
- 表面電漿波能量吸收光譜對金膜厚度變化的Kretschmann組態及化學偵測器之特性研究
- 差異光學吸收開徑式監測儀
- 中藥(材)中微量元素(銅、汞、鎘、鉛、砷、鈷、錳)之檢驗方法及規格研訂的整合型研究計畫。子計畫4:動物中藥(材)中微量元素(銅、汞、鎘、鉛、砷、鈷、錳)檢驗方法及規格研訂之研究
- 金屬元素釩能否作為糖尿病治療藥物
- 市售中藥材金屬元素之分析
- 燃油飛灰資源化之研究
- 臺中港魚市魚貨重金屬含量之調查
- 以石墨爐式原子吸收光譜儀直接測量酒中鉛、銅及鎘方法之探討
頁籤選單縮合
題 名 | Absorption Spectra of Gamma-Irradiated Borate Glasses Containing Vanadium=含釩之硼酸鹽玻璃經加馬射線照射後之吸收光譜 |
---|---|
作 者 | Elbatal,Hatem A.; Shafi,Nabil Abd El; Azooz,Moenis A.; | 書刊名 | 核子科學 |
卷 期 | 35:5 1998.10[民87.10] |
頁 次 | 頁331-342 |
分類號 | 449.6 |
關鍵詞 | 釩; 硼酸鹽玻璃; 加馬射線; 吸收光譜; Absorption; Radiation; Borate glasses; Vanadium; |
語 文 | 英文(English) |
英文摘要 | The optical absorption spectra of nominally pure and V-doped alkali borate glasses have been measured at wavelengths from 200 to 1100 nm before and after absorbed various doses of γ - ray radiation. Based on the analysis, the effect of glass composition on the equilibrium between various vanadium coordinations was studied. In the parent borate glass without vanadium, the gamma ray irradiation induces three absorption bands that are attributed to the formation of positive hole centers, in the glasses containing vanadium, it induces two new absorption bands. The results indicate that the electrons liberated during irradiation share in the formation of V ���� ions according to the proposed photochemical reactions. Another postulation is advanced that the induced defects is a metastable (���� +e �� ) defect which gives absorption at the same position to that for the original V ���� ions. The change in the growth rate of the induced bands is discussed. |
本系統中英文摘要資訊取自各篇刊載內容。