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Multipurpose EPR loop-gap resonator and cylindrical cavity for aqueous samples at
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10.1063/1.2709746
/content/aip/journal/rsi/78/3/10.1063/1.2709746
http://aip.metastore.ingenta.com/content/aip/journal/rsi/78/3/10.1063/1.2709746

Figures

Image of FIG. 1.
FIG. 1.

Scaled drawings of (a) one-loop-one-gap , (b) two-loop-one-gap , (c) three-loop-two-gap , and (d) five-loop-four-gap loop-gap resonators.

Image of FIG. 2.
FIG. 2.

The assembled design of the (a) five-loop-four-gap loop-gap resonator and the (b) cylindrical resonator at band. Iris placement is sidewall coupled and centered in both resonator designs. Frequency adjustment screws allow fine-tuning of the cylindrical frequency by changing the ratio.

Image of FIG. 3.
FIG. 3.

band translation setup. The resonator is inserted into the horizontal (perpendicular to ) port by sliding the air-bearing table along the granite slab.

Image of FIG. 4.
FIG. 4.

Assembled drawing of the band collet system: (a) view assembled with sample and (b) exploded view. Two end sections are placed concentric with the resonator body and form the top and bottom end plates of the resonator. The sample is placed through the compression screw, bearing, and sphere. As the compression screw is tightened, the PTFE sphere becomes oblate and secures the sample.

Image of FIG. 5.
FIG. 5.

Using EDM technology, the cylindrical resonator body was cut in a keylike shape and press fit into the graphite holder. The end sections were then fastened on the top and bottom of the graphite, completing the assembly.

Image of FIG. 6.
FIG. 6.

Multiquantum experiment using of TEMPO. (a) , (b) , (c) , and (d) . As the quantum number increases, the ratio of signal heights of the first to the third line increases, which provides information on the product of and . See Ref. 10.

Image of FIG. 7.
FIG. 7.

Continuous-wave field modulation experiment using of TEMPO. The figure provides a benchmark of sensitivity and stability for band EPR of aqueous spin-label samples.

Tables

Generic image for table
Table I.

Summary of LGR dimensions at .

Generic image for table
Table II.

Characteristics of the five-loop-four-gap LGR and cylindrical at .

Generic image for table
Table III.

Summary of cylindrical dimensions at .

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/content/aip/journal/rsi/78/3/10.1063/1.2709746
2007-03-09
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Multipurpose EPR loop-gap resonator and cylindrical TE011 cavity for aqueous samples at 94GHz
http://aip.metastore.ingenta.com/content/aip/journal/rsi/78/3/10.1063/1.2709746
10.1063/1.2709746
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