85MeV19 F重离子辐照α-Al2O3的空洞研究
85MeV19 F중리자복조α-Al2O3적공동연구
Voids in α-Al2O3 Irradiated by 85 MeV19 F Ions
  • 万方数据
    高能物理与核物理 고능물리여핵물리
    HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS
    2003年 7期 649-652 ,共4页

    王荣%徐勇军%朱佳政%T.Iwata%郑永男%周冬梅%K.Matsuta%M.Fukuda%M.Mihara%T.Minamisono%朱升云

    왕영%서용군%주가정%T.Iwata%정영남%주동매%K.Matsuta%M.Fukuda%M.Mihara%T.Minamisono%주승운

    重离子辐照%热退火%空洞%正电子湮没 重離子輻照%熱退火%空洞%正電子湮沒
    중리자복조%열퇴화%공동%정전자인몰
    heavy ion irradiation%thermal annealing%void%positron annihilation
    5.28×1016cm-2 85MeV 19 F辐照的α-Al2O3中,在其热退火过程中采用正电子湮没方法首次观察到了空洞. 450℃退火开始产生空洞,550℃到750℃空洞半径约为0.29nm不随温度变化,但浓度随温度增加而增加;高于750℃,空洞半径随温度升高迅速增大,1050℃时空洞的半径达1.10nm.
    5.28×1016cm-2 85MeV 19 F복조적α-Al2O3중,재기열퇴화과정중채용정전자인몰방법수차관찰도료공동. 450℃퇴화개시산생공동,550℃도750℃공동반경약위0.29nm불수온도변화,단농도수온도증가이증가;고우750℃,공동반경수온도승고신속증대,1050℃시공동적반경체1.10nm.
    The voids in α-Al2O3 irradiated by 85 MeV 19 F ions of 5.28×1016 cm-2 have been observed during the post-annealing by a positron annihilation lifetime technique for the first time. The voids start to appear at 450℃. The void radius keeps nearly constant at ～0.29nm and the number of voids increases with increasing the annealing temperature from 550℃ to 750℃. Afterwards, the radius of voids increases rapidly with the annealing temperature and reaches 1.10nm at 1050℃.
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