−Table of Contents
Cf-252 Runs with NaI detector
| Run Types (all done using anode output, +1100V bias) | ||||||
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| Run Name | Threshold (mV) | Scale (mV/div) | Offset (mV) | Timebase (nsec/div) | Delay (nsec) | Trigger Rate (+/- 0.05 Hz) |
| No Source | -10 | 20 | 60 | 200 | 500 | 22.35 |
| No Source | -100 | 200 | 600 | 200 | 500 | 14.94 |
| Source | -10 | 20 | 60 | 200 | 500 | 23.02 |
| Source | -100 | 200 | 600 | 200 | 500 | 18.73 |
| Source, Gd | -10 | 20 | 60 | 200 | 500 | 27.20 |
| Source, Gd | -100 | 200 | 600 | 200 | 500 | 21.99 |
| Source, Shield | -10 | 20 | 60 | 200 | 500 | 26.83 |
| Source , Shield | -100 | 200 | 600 | 200 | 500 | 20.80 |
| Source, Shield, Gd | -10 | 20 | 60 | 200 | 500 | 26.80 |
| Source, Shield, Gd | -100 | 200 | 600 | 200 | 500 | 20.79 |
Analysis
The K-60 peak can be found at 1.46 MeV and the Tl-208 peak can be found at 2.61 MeV (http://www.irpa.net/irpa10/cdrom/00910.pdf).
Runs with no shielding
| Figure 1: Cf-252 Runs: 10mV threshold |
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| Figure 2: Cf-252 Runs: 100mV threshold |
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Runs with shielding
| Figure 3: Cf-252 Runs: 10mV threshold |
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| Figure 4: Cf-252 Runs: 100mV threshold |
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