Nuclear quadrupole resonance detected at 30 MHz with a dc superconducting quantum interference device

Claude Hilbert; John Clarke; Tycho Sleator; Erwin L. Hahn

doi:10.1063/1.96042

Nuclear quadrupole resonance detected at 30 MHz with a dc superconducting quantum interference device

Claude Hilbert, John Clarke, Tycho Sleator, Erwin L. Hahn

Research output: Contribution to journal › Article › peer-review

Abstract

A dc superconducting quantum interference device is used as a tuned radio frequency amplifier at liquid helium temperatures to detect pulsed nuclear quadrupole resonance at ∼30 MHz. At a bath temperature of 4.2 K, a total system noise temperature of 6±1 K has been achieved, with a quality factor Q of 2500. A novel Q spoiler, consisting of a series array of Josephson tunnel junctions, reduces the ring-down time of the tuned circuit after each pulse. The minimum number of Bohr magnetons observable from a free precession signal after a single pulse is ∼2×10¹⁶ in a bandwidth of 10 kHz.

Original language	English (US)
Pages (from-to)	637-639
Number of pages	3
Journal	Applied Physics Letters
Volume	47
Issue number	6
DOIs	https://doi.org/10.1063/1.96042
State	Published - 1985

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.96042

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title = "Nuclear quadrupole resonance detected at 30 MHz with a dc superconducting quantum interference device",

abstract = "A dc superconducting quantum interference device is used as a tuned radio frequency amplifier at liquid helium temperatures to detect pulsed nuclear quadrupole resonance at ∼30 MHz. At a bath temperature of 4.2 K, a total system noise temperature of 6±1 K has been achieved, with a quality factor Q of 2500. A novel Q spoiler, consisting of a series array of Josephson tunnel junctions, reduces the ring-down time of the tuned circuit after each pulse. The minimum number of Bohr magnetons observable from a free precession signal after a single pulse is ∼2×1016 in a bandwidth of 10 kHz.",

author = "Claude Hilbert and John Clarke and Tycho Sleator and Hahn, {Erwin L.}",

year = "1985",

doi = "10.1063/1.96042",

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volume = "47",

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journal = "Applied Physics Letters",

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AU - Hilbert, Claude

AU - Clarke, John

AU - Sleator, Tycho

AU - Hahn, Erwin L.

PY - 1985

Y1 - 1985

N2 - A dc superconducting quantum interference device is used as a tuned radio frequency amplifier at liquid helium temperatures to detect pulsed nuclear quadrupole resonance at ∼30 MHz. At a bath temperature of 4.2 K, a total system noise temperature of 6±1 K has been achieved, with a quality factor Q of 2500. A novel Q spoiler, consisting of a series array of Josephson tunnel junctions, reduces the ring-down time of the tuned circuit after each pulse. The minimum number of Bohr magnetons observable from a free precession signal after a single pulse is ∼2×1016 in a bandwidth of 10 kHz.

AB - A dc superconducting quantum interference device is used as a tuned radio frequency amplifier at liquid helium temperatures to detect pulsed nuclear quadrupole resonance at ∼30 MHz. At a bath temperature of 4.2 K, a total system noise temperature of 6±1 K has been achieved, with a quality factor Q of 2500. A novel Q spoiler, consisting of a series array of Josephson tunnel junctions, reduces the ring-down time of the tuned circuit after each pulse. The minimum number of Bohr magnetons observable from a free precession signal after a single pulse is ∼2×1016 in a bandwidth of 10 kHz.

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JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 6

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Nuclear quadrupole resonance detected at 30 MHz with a dc superconducting quantum interference device

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