1-15 MeV proton and alpha particle radiation effects on GaAs quantum well light emitting diodes [and QWIPs]
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
Permanent radiation damage was investigated in GaAs quantum well light emitting diodes (QW LEDs) due to protons and alpha particles in the 1-15 MeV energy range. At room temperature, these devices under forward bias emit infrared radiation at 980 mm. Current-voltage (I-V) and light emission characteristics of these devices were studied as a function of fluence and energy of protons and alpha radiations. For a given particle, the radiation damage in these devices increased with increase in fluence at a given energy, and decreased with increase in energy of the radiation at a fixed fluence, for both protons and alpha particles. Further, the alpha particles were observed to be far more damaging than the protons. These results agree qualitatively with the principal concepts of dependence of permanent displacement damage on nonionizing energy loss (NIEL) in the device. They are however found to deviate from the widely accepted concepts of damage dependence on fluence and particle energy. Based on the decrease in damage with increase in energy observed in QW LEDs in the present work and the results of earlier workers on energy dependence of damage in GaAs LEDs, it is concluded that these QW LEDs are more radiation hard than the modern GaAs LEDs reported recently. Further, there is less device to device variability of radiation damage between the QW LEDs than in the double heterojunction LEDs. 3 MeV proton radiation effects on device characteristics of quantum well infrared photodetectors operating in the short wavelength infrared region are also reported.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it