The energy dependence of lifetime damage constants in GaAs LEDs for 1-500 MeV protons
The energy dependence of lifetime damage constants in GaAs LEDs for 1-500 MeV protons
复制标题
1-500 MeV 质子的 GaAs LED 寿命损伤常数的能量依赖性
DOI：
10.1109/23.489259
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发表时间：
1995
影响因子：
1.8
通讯作者：
J. Vincent
中科院分区：
文献类型：
--
作者：
A. L. Barry;A. Houdayer;P. Hinrichsen;W. G. Letourneau;J. Vincent
已在 1-500 MeV 质子的 GaAs LED 中测量了寿命损伤常数的能量依赖性。当能量低于约 100 MeV 时，这种依赖性接近于基于非电离能量损失 (NIEL) 和损伤常数之间的比例所预期的依赖性。然而，在 150-500 MeV 范围内，发现损伤常数单调下降，这与已公布的计算结果不一致，该计算表明损伤常数随着能量的增加而增加。建议两种可能的解释；计算 NIEL 能量依赖性的模型不充分，或者产生损伤簇，其影响小于以点缺陷形式沉积的等效能量。
The energy dependence of lifetime damage constants have been measured in GaAs LEDs for 1-500 MeV protons. At energies below about 100 MeV, the dependence is close to that expected based on proportionality between non-ionizing energy loss (NIEL) and damage constants. In the 150-500 MeV range, however, a monotonic decrease in damage constant is found, at variance with published calculations which show an increase with energy. Two possible explanations are suggested; an inadequate model for the calculated energy dependence of NIEL, or the creation of damage clusters which have less effect than the deposition of an equivalent energy in the form of point defects.