摘要
The formation of color centers in BaFCl:Eu^(2+) crystal is studied in more de- tail and further evidence for FA centers in BaFCl:Eu^(2+)is reported.The creation of color centers in BaFCl:Eu^(2+)may be devided into three stages.Under long time X-irradiation be- yond stage 1,the concentration of FA centers depends linearly on the nth(n=1,2 or 3) power of F center concentration.While under short time X-irradiation within stage 1,the concentration dependence of FA centers on F center is complex.Simple centers are easier to create than complex centers.Possible mechanisms for color centers formation in BaFCl:Eu^(2+) are also proposed and discussed.
The formation of color centers in BaFCl:Eu^(2+) crystal is studied in more de- tail and further evidence for FA centers in BaFCl:Eu^(2+)is reported.The creation of color centers in BaFCl:Eu^(2+)may be devided into three stages.Under long time X-irradiation be- yond stage 1,the concentration of FA centers depends linearly on the nth(n=1,2 or 3) power of F center concentration.While under short time X-irradiation within stage 1,the concentration dependence of FA centers on F center is complex.Simple centers are easier to create than complex centers.Possible mechanisms for color centers formation in BaFCl:Eu^(2+) are also proposed and discussed.
基金
The project is supported by NNSFC grant.
