Magnetic Resonance Spectrometer

[J_Player]

Originally Posted by Esteban

Of course, apparently no relation with PD... but you're sure?

Hi Esteban,
Yes, I am sure.
If you read the articles, they are talking about the methods of measuring the spectrum of nuclear magnetic resonance for different samples placed inside a testing machine. The testing machine will not work without building it to some very close tolerances:

Originally Posted by Caltech - physics department

The magnet has been modified and adjusted to produce a highly homogeneous magnetic field over a relatively large volume (~1.5 cm^3) at the center of the gap. This has required using high-purity low-remanence iron for the pole-pieces, and finishing the faces flat to optical tolerances (~1-2 wavelengths). The pole-pieces have not been rigidly attached to the main magnet H-frame, realistic machining tolerances making this impractical. Instead a Neoprene rubber (0.8 mm) spacer has been inserted between each pole-piece and the frame. Careful adjustment of the three fixing screws for each pole-piece varies the compression of the Neoprene so that the pole faces may be adjusted to be precisely parallel, thus maximizing the volume of best field homogeneity. A field homogeneity better than 1 part in 10,000 over a volume of ~2 cm^3 has been achieved.

A sample coil is mounted centrally in the gap of the magnet. A short length of NON-MAGNETIC low-capacity coaxial cable is used for connection to the electronics chassis.

The sample to be tested is inserted between the pole pieces of an electromagnet that has been adjusted by three setscrews to produce an extremely homogenous field in a space of 2 cubic centimeters where the sample is placed.

When reading the text, it became very apparent that this equipment has no bearing on using an antique IB metal detector to find buried treasure, or using a passive ferrite coil with an attached RF detector circuit to locate buried treasure. The articles describe a method to measure the nuclear magnetic resonance of samples placed in a testing machine, not methods to locate hidden samples at long range with receiver coils. And the principle of operation is not related either, as it requires extremely high precision machining as well as adjusting physical dimensions to optical tolerances (1-2 wavelengths) in order to produce a extremely homogeneous magnetic field (better than part 1 in 10,000). Then it requires inserting a sample into this high-precision 2cc field to exhibit precession data when the field is removed.

Do you think any of this is related to the PD?

Best wishes,
J_P