Integrated planar HTS SQUID gradiometer for NDE application

Jen Tzong Jeng*, Hsu Yang Lee, Ji Cheng Chen, Jau Han Chen, Chiu Hsien Wu, Hong Chang Yang, Herng Er Horng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


The performance of a SQUID NDE probe with integrated planar SQUID gradiometers was compared to that with an electronic axial SQUID gradiometer. A circular excitation coil was used for the SQUID NDE probe with the planar gradiometer, whereas a differential excitation coil was adopted for the one with the axial gradiometer. These NDE systems are used to detect a buried flaw in aluminum plates, and the phase-depth relations of the buried flaw were found to show similar linear dependences. Overall, the SQUID NDE system with the planar gradiometer is relatively simple and practical for unshielded operations.

Original languageEnglish
Pages (from-to)521-526
Number of pages6
JournalJournal of Low Temperature Physics
Issue number3-4
Publication statusPublished - 2003 May

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • General Materials Science
  • Condensed Matter Physics


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