在BNU400注入机上搭建的离子激发发光(ion beam induced luminescence,IBIL)测量装置上,开展了相同能量(100 keV)条件下的3种离子(H^+、He^+以及O^+)辐照氟化锂材料时的IBIL光谱的原位测量工作,对比研究离子种类对氟化锂材料辐照缺陷的...在BNU400注入机上搭建的离子激发发光(ion beam induced luminescence,IBIL)测量装置上,开展了相同能量(100 keV)条件下的3种离子(H^+、He^+以及O^+)辐照氟化锂材料时的IBIL光谱的原位测量工作,对比研究离子种类对氟化锂材料辐照缺陷的生成及其演变行为的影响.结合SRIM(Stopping and Range of Ions in Matter)模拟的结果,可以发现He^+辐照时的IBIL光谱强度最高,这是由于He^+激发产生的电子空穴对密度高于H^+,而O^+辐照时由于激发出的电子空穴对密度过高引起的非辐射复合比例增加,从而导致发光效率过低;质量数越大的离子辐照时,核阻止本领越大,会加快缺陷的生成和湮灭速率,降低达到平衡状态时的发光强度.近红外波段的F^-3/F^+2色心发光峰强度及其演变行为表明其耐辐照性能好于可见光波段的F2色心.展开更多
[Objective] The aim was to study on effects of inorganic sodium salt in soil on concentration of zinc ion in different patterns. [Method] Tessier sequential extraction was used to study on effects of inorganic sodium ...[Objective] The aim was to study on effects of inorganic sodium salt in soil on concentration of zinc ion in different patterns. [Method] Tessier sequential extraction was used to study on effects of inorganic sodium salts （in different species and different concentrations） on concentration of zinc ion in different patterns. [Result] Different inorganic sodium salts had different effects on zinc form. Content of ex- changeable Zn would reduce if Na2CO3 or Na2SO4 was added and the content would increase if NaCI was added. Content of carbonate zinc, which was significantly influ- enced by Na2SO4, would increase if NaCI or Na2SO4 was added, and would decrease if Na2CO3 was added. For Zn bound to Fe-Mn oxides and organic matters, and residual Zn, the contents would decrease if NaCI or Na2SO4 was added and the decrease showed much more significantly if high concentration sodium salts were added. In addition, content of Zn bound to Fe-Mn oxides decreased if Na2CO3 was added. If low concentration Na2CO3 was added, Zn bound to organic matters and residual would increase in content but would lower if high concentration one was added. [Conclusion] The research provided references for measurement of heavy metal ion content in soil in different places.展开更多
文摘在BNU400注入机上搭建的离子激发发光(ion beam induced luminescence,IBIL)测量装置上,开展了相同能量(100 keV)条件下的3种离子(H^+、He^+以及O^+)辐照氟化锂材料时的IBIL光谱的原位测量工作,对比研究离子种类对氟化锂材料辐照缺陷的生成及其演变行为的影响.结合SRIM(Stopping and Range of Ions in Matter)模拟的结果,可以发现He^+辐照时的IBIL光谱强度最高,这是由于He^+激发产生的电子空穴对密度高于H^+,而O^+辐照时由于激发出的电子空穴对密度过高引起的非辐射复合比例增加,从而导致发光效率过低;质量数越大的离子辐照时,核阻止本领越大,会加快缺陷的生成和湮灭速率,降低达到平衡状态时的发光强度.近红外波段的F^-3/F^+2色心发光峰强度及其演变行为表明其耐辐照性能好于可见光波段的F2色心.
基金Supported by National Natural Science Foundation of China (40973078)Tianjin Normal University Project (5RL083)~~
文摘[Objective] The aim was to study on effects of inorganic sodium salt in soil on concentration of zinc ion in different patterns. [Method] Tessier sequential extraction was used to study on effects of inorganic sodium salts （in different species and different concentrations） on concentration of zinc ion in different patterns. [Result] Different inorganic sodium salts had different effects on zinc form. Content of ex- changeable Zn would reduce if Na2CO3 or Na2SO4 was added and the content would increase if NaCI was added. Content of carbonate zinc, which was significantly influ- enced by Na2SO4, would increase if NaCI or Na2SO4 was added, and would decrease if Na2CO3 was added. For Zn bound to Fe-Mn oxides and organic matters, and residual Zn, the contents would decrease if NaCI or Na2SO4 was added and the decrease showed much more significantly if high concentration sodium salts were added. In addition, content of Zn bound to Fe-Mn oxides decreased if Na2CO3 was added. If low concentration Na2CO3 was added, Zn bound to organic matters and residual would increase in content but would lower if high concentration one was added. [Conclusion] The research provided references for measurement of heavy metal ion content in soil in different places.
