Xianxinda
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| Brand | Xianxinda |
|---|---|
| Model | CIT-3000F |
| Detector Type | Gamma Spectrometer |
| Scintillator | NaI(Tl), Ø75 mm × 75 mm |
| Shielding | Lead chamber, 100 mm wall thickness, 200 mm internal diameter |
| MCA Channels | 1024 / 2048 |
| Energy Resolution | <7% at 661 keV (¹³⁷Cs) |
| Differential Nonlinearity | 0.2% |
| Integral Nonlinearity | 0.01% |
| Pulse Shaping Time | 2.0 µs |
| Background Count Rate | ≤6 cps (50–3000 keV) |
| Measurement Uncertainty | ≤10% (k=2) |
| Stability | Peak shift ≤1% over 24 h |
| Sample Mass | 500 g |
| Acquisition Time Range | 10–65,500 s |
| Operating Temperature | 0–50 °C |
| Relative Humidity | ≤95% |
| Power Consumption | <300 mA |
| Host Dimensions | 31 × 32 × 13 cm |
| Host Weight | 3 kg |
| Software | Windows-based spectral analysis suite with Chinese GUI, Excel export, calibration database, and inverse matrix quantification algorithm |
| Compliance | JJG 417–2006, GB 6566–2010, CNAS-accredited calibration certificate issued by China National Institute of Metrology (CNIM) |