US 4,063,207 A · Coil structure

Abstract

A cylindrical coil form, for magnetic coupling with an irradiated nuclear magnetic resonance gas sample, is provided with peripheral and longitudinal grooves. The peripheral grooves are not helical in form, but are perpendicular to the axis of the coil form to give a precisely directed longitudinal magnetic field. A first coil for providing strong magnetic coupling along the axis of the coil form is wound in the peripheral grooves, the adjacent turns being interconnected by short longitudinal sections of wire in one of the longitudinal grooves. Additional coils are provided for magnetic coupling transverse to the axis of the coil through the use of wires extending down one of the longitudinal slots and back in another longitudinal slot. The form may be of phenolic material, or may be transparent so that the nuclear magnetic resonance sample may be irradiated directly through the coil form.

Claims13

Dependent claims

In a coil structure for applying a strong magnetic field in a predetermined direction, and weaker magnetic field in two additional mutually orthogonal directions:

a generally cylindrical coil form, said coil form having a plurality of peripheral grooves along its length, and a plurality of longitudinal grooves extending parallel to the axis of said form along the outer surface of said form;
first coil means including wires wound in said peripheral grooves for providing strong magnetic coupling along the axis of said coil form;
second coil means including a wire extending down at least one of said longitudinal grooves and back in another of said longitudinal grooves for providing weak magnetic coupling in a first transverse direction perpendicular to the axis of said coil form, and
third coil means including a wire extending down one of said longitudinal grooves and back in another for providing weak magnetic coupling perpendicular the axis of said coil form, and at an angle with respect to said first transverse direction.

1 more element

Dependencies are inferred from the claim text.

Coil structure

Life of this patent

Coil structure

Life of this patent

Abstract

Claims13