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 journalArticle

    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 languageEnglish (US)
    Pages (from-to)637-639
    Number of pages3
    JournalApplied Physics Letters
    Volume47
    Issue number6
    DOIs
    StatePublished - 1985

    Fingerprint

    nuclear quadrupole resonance
    spoilers
    Bohr magneton
    interference
    downtime
    noise temperature
    pulses
    precession
    tunnel junctions
    liquid helium
    Q factors
    baths
    radio frequencies
    amplifiers
    bandwidth
    temperature
    rings

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

    Cite this

    Nuclear quadrupole resonance detected at 30 MHz with a dc superconducting quantum interference device. / Hilbert, Claude; Clarke, John; Sleator, Tycho; Hahn, Erwin L.

    In: Applied Physics Letters, Vol. 47, No. 6, 1985, p. 637-639.

    Research output: Contribution to journalArticle

    Hilbert, Claude ; Clarke, John ; Sleator, Tycho ; Hahn, Erwin L. / Nuclear quadrupole resonance detected at 30 MHz with a dc superconducting quantum interference device. In: Applied Physics Letters. 1985 ; Vol. 47, No. 6. pp. 637-639.
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