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Extension of the measurement capabilities of the quadrupole resonator
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10.1063/1.4725521
/content/aip/journal/rsi/83/6/10.1063/1.4725521
http://aip.metastore.ingenta.com/content/aip/journal/rsi/83/6/10.1063/1.4725521

Figures

Image of FIG. 1.
FIG. 1.

Technical drawing of the quadrupole resonator with attached sample and thermometry chamber housing a dc heater and temperature sensors.2

Image of FIG. 2.
FIG. 2.

Surface resistance of a reactor grade bulk niobium sample for three frequencies as a function of temperature, measured at a magnetic field of about 15 mT. The solid lines show least squares fits to BCS theory. In the normal conducting regime above T c the surface resistance was also derived from 3 dB bandwidth measurements.

Image of FIG. 3.
FIG. 3.

Quench field B max, RF of the bulk niobium sample in clean and dirty condition, measured in CW.

Image of FIG. 4.
FIG. 4.

Critical field under RF (short pulses) of the clean bulk niobium sample.

Image of FIG. 5.
FIG. 5.

Critical field under RF (short pulses) of the niobium film sample.

Tables

Generic image for table
Table I.

Material parameters derived from low field surface resistance measurements below 4.5 K.

Generic image for table
Table II.

Critical RF field of the bulk niobium sample.

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/content/aip/journal/rsi/83/6/10.1063/1.4725521
2012-06-06
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Extension of the measurement capabilities of the quadrupole resonator
http://aip.metastore.ingenta.com/content/aip/journal/rsi/83/6/10.1063/1.4725521
10.1063/1.4725521
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