TOPIC 1-Q OF THE DEPARTMENT OF DEFENSE OMNIBUS SOLICITATION SPECIFIES THE MEASUREMENT OF LIQUID WATER CONTENT OF SNOW.

TOPIC 1-Q OF THE DEPARTMENT OF DEFENSE OMNIBUS SOLICITATION SPECIFIES THE MEASUREMENT OF LIQUID WATER CONTENT OF SNOW. NUCLEAR MAGNETIC RESDNANCE SPECTROSCOPY HAS THE ABILITY TO DETECT AND MEASURE LIQUID CONTENT WITHOUT MEASURING SOLID DENSITY. FORTUNATELY THE HYDROGEN RESONANCE SIGNAL FROM H20 IS PROBABLY THE STRONGEST NMR SIGNAL AVAILABLE. THIS COMBINATION OF CIRCUMSTANCES SHOULD PERMIT THE DESIGN OF A COMS MIRCROPROCESSOR BASED NMR SPECTROMETER RELATIVELY LOW RESOLUTION WHICH HAS THE CAPABILITY OF MEASURING THE AREA UNDER THE HYDROGEN LINE AND COMPUTING FREE WATER CONTENT OF SNOW. THE TWO MAJOR PROBLEMS WILL BE ACHIEVEMENT TO A SUFFIECIENTLY UNIFORM MAGNETIC FIELD OF SUFFICIENTLY KNOWN STRENGHT, AND SUFFICIENT OSCILLATOR STABILITY. ONLY THE FACT THAT THE DESIRED SIGNAL WILL SEVERAL ORDERS OF MAGNITUDE LARGER THAN ANY SPURIOUS SIGNALS MAKES THE DESIGN PRACTICAL. THE DESIGN APPROACH WILL USE CERAMIC MAGNETS TO ESTABLISH A BASE MAGNETIC FIELD. FIELD COILS WILL SWEEP THE FIELD OVER SUFFICIENT RANGE TO COVER ALL TOLERANCES. THE MICROPROCESSOR WILL CAPTURE AND MEASURE THE HYDROGEN RESONANCE PEAK.