Bruker 500-MHz Avance III HD
The Bruker 500-MHz Avance III HD spectrometer has a room temperature QXI probe, triple axis gradients, temperature controller and automatic tuning. Feed gases are dried, stored in a buffer tank (Parker Balston Model 72-012) and nitrogen separated.
Specifications
| Part | Description |
|---|---|
| Magnet | Ascend 500-MHz |
| Probes | Inverse QXI ¹H/²H/¹³C/¹⁵N/³¹P with auto-tune and 3-axis gradients |
| Amplifiers | BLAXH2H300/100/150 for ¹H/²H/X channel pulsing |
| BLA2X500 for X/Y channel pulsing | |
| Gradients | Grasp-III x/y/z with 10A per channel |
| Preamps | HPPR/2 with ¹H/²H/¹³C/³¹P preamps |
| Shims | BOSS-3 BSMS |
| Freq. Gen. | SGU3 with DRU/DQD |
| Temperature | BCU-I (0°C) |
| Console | Avance III HD |
| Software | Topspin v3.2 |
Nutation Field Strengths
| Nucleus | Power Level | pw90 | Notes |
|---|---|---|---|
| 1H (499.872MHz) | -8.4 dB (6.9W) | 10μs1 | Hard pulse (<100μs) |
| 27.1 dB (1.9mW) | 1.0ms1 | Sinc1 water flip back | |
| 31.6 dB | 1.0ms1 | Selective water flip back | |
| 13C (125.699MHz) | -23.0 dB (199.5W) | 11.6μs | Hard pulse (<100μs) |
| -8.0 dB (6.35W) | 65.0μs | Decoupling pulse (<80ms) | |
| 15N (50.657MHz) | -20.3 dB (106.2W) | 47μs | Hard pulse (<100μs) |
| -7.69 dB (5.87W) | 200μs | Decoupling pulse (<80ms) |