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Pulsed NMR
introduction | the instrument | experiments
| specifications| prices
New Pulsed/CW NMR Designed for Teaching
PS1-B Specifications
Magnet
- Field: 3,600 Gauss (nominal)
- Homogeneity: 0.1 % over 1 cm³ spherical volume
- Temperature stability: 4 Gauss/°C
Pulse Programmer
- Two Independent Pulses: A and B
- Pulse width: 1-30 µs
- Pulse sequence: Single A, Multiple B; 1-99 pulses
- Digital time delay: 0.1 ms-9.9 s in 10 µs increments
- Repetition time: 1 ms-10 s
- Internal, external, manual trigger
- Meiboom-Gill gate pulse
- Scope trigger on A or B pulse
Oscillator/Amplifier/Mixer
- Frequency: 15.000 ± 1.0 MHz, 10 Hz resolution
- Accuracy: 0.005 %
- Stability: 1 ppm over 103 s
- Leakage (pulse off): 80 db maximum
- B rotating 10 Gauss, 5 µs for p/2 pulse
- Mixer input 10 mV rms full-scale
Receiver
- Sensitivity: 8 µV rms full-scale
- Equivalent input noise: 1.5 µV rms
- Gain range: 60 db (power)
- Dead time: 5 µs
- Time constant: 0.01-0.3 ms
- RF output, detected output, blanking input
Sample Probe
- Crossed-coil design: Helmholtz configuration for transmitter, axial receiver coil
- Probe mounted on mechanical stage to locate sample in appropriate region of the magnet gap
- Two-dimensional (x-y) motion, parallel to pole pieces.
Instrument Case
- Power supply, two open slots for additional accessories.
Also included
- Complete set of coaxial cables,
- 50 sample vials, vial storage case and standard calibrated samples.
- Instructional manual with representive data, student experiments and extended references.
Accessories Available
- Circuit Diagrams
- B1 - Pickup Probe to measure rf magnetic field diretly
- Dummy Sample Probe to simulate precessing nuclear magnetism
- Carry Handle for Electronics Case
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