Bruker Analytische Messtechnik Gmbh

Ekkehard Gentsch

Dieter Schmalbein

A resonator arrangement 10 serves for electron spin resonance spectroscopy. It comprises an upper carrier plate 30, a long center portion 32, 33, 40, 41 and a lower resonator section 45, 46, 47. In the area of the center portion 32, 33, 40, 41, there is provided at least one separating plane 50, 51 along which the resonator arrangement 10 can be divided into an upper part 52 and a lower part 52, it being possible to connect a plurality of different lower parts 53 to one and the same upper part 52.

Resonator arrangement for electron spin resonance spectroscopy

A resonator arrangement is provided for electron spin resonance spectroscopy. It comprises an annular, dielectric resonance ring 11 where field lines 13 of the resonance field emerge in the direction of the axis 12 of the resonance ring 11 and close in the outer space 18. There is further provided a coupling means for coupling and decoupling microwave energy into and out of the resonance ring 11. The coupling means comprises a coupling loop 14 which is arranged in the outer space 18 and adapted for being displaced in a direction 16 parallel to the axis 12.

A resonator is provided for electron spin resonance spectroscopy. The resonator comprises a first wall element which delimits a cavity and which is in releasable contact with other wall element delimiting the cavity. The connection between the first wall element and at least one of the additional wall elements is effected only by spring force (single figure).

Resonator for electron spin resonance spectroscopy

A resonator is provided for electron spin resonance spectroscopy. It comprises a resonant element comprising a cavity, and a predetermined oscillation mode is capable of propagating in the cavity. The resonator comprises further a coupling element comprising a waveguide section. Finally, the resonator is equipped with a tuning arrangement for coupling an electromagnetic wave in the waveguide section with the oscillation mode in the cavity. The tuning arrangement comprises at least one conductive wafer, which is arranged at the free end of a tuning rod projecting into the waveguide section and is adapted for displacement in the direction of a longitudinal axis of the tuning rod. The wafer further coacts with a coupling element disposed between the waveguide section and the cavity. Two wafers are arranged on either side of the coupling element, in the direction of the longitudinal axis, and can be displaced in opposite senses relative to the coupling element.

A resonator is provided for electron spin resonance spectroscopy. The resonator comprises walls defining a cavity. In the cavity, a predetermined oscillation mode of a preselectable frequency, in particular in the Q band, is capable of propagating. The walls are provided with an opening for irradiating a radiation, in particular light rays. The cavity has a cylindrical shape. An oscillation mode of the type TE.sub.01n is excited, with n being greater than one. The opening is configured as an annular slot extending substantially all around the cylindrical jacket, which defines the cavity, in a radial plane at a distance of m L/4 from a radial end wall delimiting the cavity, and m is an odd number and greater than one (FIG. 2).

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Karlsruhe, Germany

Ekkehard Gentsch