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Table 2.
Count rate degradation induced by neutron fluence for diodes A (a) and C (b).
| a | ||||||
|---|---|---|---|---|---|---|
| Reactor | Day | Fluence range | Mean | Mean count | Count rate drift | Count rate |
| power (W) | (cm−2) | temperature (°C) | rate (s−1) | (s−1) | relative drift (%) | |
| 100 | 1 | 7.4 × 1013–7.6 × 1013 | 23.8 | 5920.7 | −1502.7 | −22.2% |
| 200 | 1 | 8.1 × 1013–9.1 × 1013 | 23.8 | 6551.5 | −2101.1 | −28.0% |
| 1000 | 1 | 1.1 × 1014–1.7 × 1014 | 24.0 | 24766.3 | −3626.9 | −13.8% |
| 2000 | 1 | 2.2 × 1014–3.3 × 1014 | 24.6 | 37314.2 | −5665.0 | −14.0% |
| 5000 | 1 | 4.8 × 1014–7.1 × 1014 | 25.6 | 62719.2 | −12015.5 | −17.6% |
| 10 000 | 1 | 8.9 × 1014–1.4 × 1015 | 27.1 | 75803.5 | −16362.8 | −19.5% |
| 20000 | 1 | 1.7 × 1015–2.2 × 1015 | 29.5 | 84044.2 | −15072.8 | −16.4% |
| 20000 | 2 | 3.2 × 1015–4.2 × 1015 | 26.0 | 68485.8 | −12909.7 | −17.2% |
| 50000 | 2 | 5.3 × 1015–8.5 × 1015 | 35.8 | 77530.5 | −35692.6 | −36.9% |
| 100000 | 2 | 1.1 × 1016–2.4 × 1016 | 53.1 | 28536.6 | −53611.7 | −83.6% |
| 150000 | 2 | 2.8 × 1016–3.6 × 1016 | 64.2 | 7085.6 | −4240.6 | −46.5% |
| 200000 | 2 | 4.2 × 1016–5.5 × 1016 | 77.5 | 2251.3 | −2513.4 | −68.1% |
| 250000 | 2 | 6.6 × 1016–1.1 × 1017 | 92.8 | 869.3 | −2526.9 | −99.9% |
| b | ||||||
| Reactor | Day | Fluence range | Mean | Mean count | Count rate drift | Count rate |
| power (W) | (cm−2) | temperature (°C) | rate (s−1) | (s−1) | relative drift (%) | |
| 100 | 1 | 2.5 × 1013–3.8 × 1013 | 23.9 | 3536.1 | −4197.4 | −67.4% |
| 200 | 1 | 4.3 × 1013–5.3 × 1013 | 23.9 | 3400.6 | −3133.7 | −73.0% |
| 1000 | 1 | 8.0 × 1013–1.4 × 1014 | 24.1 | 20379.6 | −3592.5 | −16.1% |
| 2000 | 1 | 1.9 × 1014–3.3 × 1014 | 24.7 | 31096.7 | −7759.4 | −22.0% |
| 5000 | 1 | 4.8 × 1014–7.0 × 1014 | 25.7 | 55936.6 | −10528.0 | −17.2% |
| 10000 | 1 | 9.7 × 1014–1.4 × 1015 | 27.3 | 69180.6 | −19196.6 | −24.5% |
| 20000 | 1 | 1.8 × 1015–2.3 × 1015 | 29.7 | 75812.3 | −17009.5 | −20.2% |
| 20000 | 2 | 3.2 × 1015–4.3 × 1015 | 26.3 | 48252.5 | −13395.8 | −24.0% |
| 50000 | 2 | 5.9 × 1015–8.6 × 1015 | 36.2 | 43966.1 | −27516.0 | −46.2% |
| 100000 | 2 | 1.2 × 1016–2.5 × 1016 | 53.7 | 16138.2 | −23970.6 | −75.6% |
| 150000 | 2 | 3.0 × 1016–3.7 × 1016 | 65.0 | 5337.8 | −3413.3 | −47.1% |
| 200000 | 2 | 4.4 × 1016–5.8 × 1016 | 78.7 | 1566.5 | −1834.9 | −71.7% |
| 250000 | 2 | 7.6 × 1016–1.2 × 1017 | 94.2 | 62.8 | −154.4 | −91.1% |
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