Full-Text Search:
Home|About CNKI|User Service|中文
Add to Favorite Get Latest Update

Radiation Damage in Large Barium Fluoride Crystals

Li Peijun Xie Youyu Zhao Yuanlong Yin Zhiwen (Shanghai Institute of Ceramics,Chinese Academy of Science,200050)  
The radiation damage of BaF_2 crystals has been investigated through the changes in theiroptical transmission before and after γ-ray irradiation.The correlation of radiation damage withcrystal growth conditions revealed that the radiation damage is impurity and defect related.Asimpurity is concerned,when the contents of cationic impurities decrease to a certain toleratedlevel,oxygen and hydroxyl become most harmful.High density of defect such as scatteringcenters in crystal also resulted in radiation damage.Thanks to recent progress in BaF_2 crystalgrowth,an encouraging result of radiation test on large crystals has been achieved.On themechanism of radiation damage,it is likely that the oxygen ion come from dissolved oxygenduring irradiation,is the cause of 190~250 nm absorption band and the formation of F colorcenter is the reason for 500~600 nm absorption band.
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©CNKI All Rights Reserved