Proximity detector circuits: an attractive alternative to tunnel diode oscillators for contactless measurements in pulsed magnetic fields

Altarawneh, Moaz M; Mielke, Charles H

doi:10.1063/1.3152219

Title: Proximity detector circuits: an attractive alternative to tunnel diode oscillators for contactless measurements in pulsed magnetic fields

Journal Article · Thu Jan 01 00:00:00 EST 2009 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.3152219· OSTI ID:956390

Altarawneh, Moaz M ^[1]; Mielke, Charles H ^[1]

Los Alamos National Laboratory

A new radio frequency oscillator circuit based on a proximity detector integrated circuit is described as an alternative for the traditional tunnel diode oscillator used for pulsed magnetic field measurements at low temperatures. The new circuit has been successfully applied to measure the superconducting upper critical field in Ba{sub 0.55}K{sub 0.45}Fe{sub 2}As{sub 2} single crystfl.ls up to 60 T. The new circuit design avoids many of the problems associated with tunnel diode circuits while keeping the advantages of contact less measurements in pulsed magnets.

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Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC52-06NA25396

OSTI ID:: 956390

Report Number(s):: LA-UR-09-00749; LA-UR-09-749; RSINAK; TRN: US1004046

Journal Information:: Review of Scientific Instruments, Vol. 80, Issue 6; ISSN 0034-6748

Country of Publication:: United States

Language:: English

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Title: Proximity detector circuits: an attractive alternative to tunnel diode oscillators for contactless measurements in pulsed magnetic fields

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