Pulsed CW NMR Spectrometer upper level physics experiments

The Pulsed / Continuous Wave (CW) NMR Spectrometer is designed for advanced physics, chemistry, and material science laboratories to study the principles of Nuclear Magnetic Resonance (NMR). The system enables students to perform both Pulsed NMR and Continuous Wave (CW) NMR experiments using hydrogen and fluorine nuclei. It supports the investigation of relaxation times, spin echoes, free induction decay (FID), chemical shifts, diffusion, magnetic field gradients, and one-dimensional imaging while providing research-grade performance for advanced educational and research applications. Manufactured by Atico Export India.

• Pulsed NMR spectroscopy
• Continuous Wave (CW) NMR spectroscopy
• Hydrogen and fluorine NMR studies
• Spin-lattice relaxation measurements
• Spin-spin relaxation measurements
• Chemical shift analysis
• Diffusion measurements
• One-dimensional imaging
• Magnetic resonance research
• Advanced laboratory education

Instrument Components :

• 0.49 Tesla permanent magnet
• Single-coil RF sample probe
• Four gradient coils (X, Y, Z, Z²)
• Gradient coil power supplies
• Temperature control system
• Pulse programmer module
• RF synthesizer
• Pulse amplifier
• Receiver module
• Envelope detector
• Quadrature phase-sensitive detector
• Lock-in amplifier
• Magnetic field sweep module
• Frequency sweep controller
• Main electronic controller
• Analog output interface

Experiments :

Relaxation Time Measurements

• Measurement of T₁ (Spin-Lattice Relaxation Time)
• Measurement of T₂ (Spin-Spin Relaxation Time)
• Relaxation studies in water
• Relaxation studies in glycerin-water mixtures
• Relaxation studies in mineral oil
• Relaxation studies in petroleum jelly
• Biological sample relaxation measurements

Pulse NMR Experiments

• Free Induction Decay (FID)
• Spin Echo measurements
• Carr-Purcell pulse sequence
• Meiboom-Gill pulse sequence
• Signal averaging
• Pulse sequence optimization

Spectroscopy Studies

• Hydrogen NMR
• Fluorine NMR
• Chemical shift analysis
• Detection of inequivalent fluorine nuclei
• Fast Fourier Transform (FFT) spectroscopy
• Phase-sensitive detection

Magnetic Field Studies

• Gradient field optimization
• Magnetic field homogeneity adjustment
• Diffusion measurements
• One-dimensional imaging

Material Investigations

• Soft solid NMR studies
• Rubber analysis
• Plastic material studies
• Grease analysis
• Epoxy curing studies
• Biological material analysis
• Comparison of recycled and virgin polymers

Educational Objectives :

• Understand the principles of Nuclear Magnetic Resonance
• Study Pulsed and Continuous Wave (CW) NMR techniques
• Measure T₁ and T₂ relaxation times
• Investigate Free Induction Decay (FID) and Spin Echo phenomena
• Analyze chemical shifts in hydrogen and fluorine compounds
• Study diffusion using magnetic field gradients
• Understand Fast Fourier Transform (FFT) analysis
• Develop practical skills in magnetic resonance spectroscopy
• Perform advanced material characterization
• Gain hands-on experience with research-grade NMR instrumentation

• Supports both Pulsed and CW NMR
• Hydrogen (Proton) and Fluorine NMR measurements
• 0.49 Tesla permanent magnet
• 21 MHz proton resonance frequency
• Highly stable magnetic field
• Envelope and quadrature phase-sensitive detection
• Measurement of T₁ and T₂ relaxation times
• Spin Echo and Free Induction Decay (FID)
• Carr-Purcell and Meiboom-Gill pulse sequences
• Fast receiver recovery for soft solids
• Detection of fluorine chemical shifts
• Four independently controlled gradient coils
• Gradient-based diffusion and imaging studies
• Integrated lock-in detection for CW NMR
• Built-in magnetic field and RF frequency sweep
• Digital pulse and frequency synthesis
• Modular instrument construction
• Research-grade experimental performance
• Analog outputs for flexible data acquisition