Accession Number : AD0782015

Title :   Effects of Nuclear Radiation on Magnetic Bubble Domain Materials and Devices,


Personal Author(s) : Williams,R. A.

Report Date : OCT 1973

Pagination or Media Count : 45

Abstract : The work described in this report is an extension of work performed on Contract no. F19628-72-C-0342. The present effort is primarily concerned with establishing failure thresholds and mechanisms of magnetic bubble domain devices. Four types of experiments were performed. A study was made of the effect of 60 KV x-rays on the hard bubble suppression properties of a neon implanted layer in (YSm)3(FeGa)5O12 material. Radiation burn-out of 300 A permalloy domain sensors was found to occur with 30 ns pulses of 1.5 MeV electrons at doses above 30,000 rads/pulse. The stability of stored information in a transient ionizing environment was investigated. Finally, measurements were made of the transient radiation response of domain sensors. (Modified author abstract)

Descriptors :   *Thin film storage devices, *Radiation effects, X rays, Electron irradiation, Magnetic domains, Garnet, Thin films, Shift registers, Transient radiation effects, Logic circuits, Yttrium compounds, Europium compounds, Thulium compounds, Gallium compounds, Samarium compounds, Ferrates

Subject Categories : Computer Hardware
      Radioactiv, Radioactive Wastes & Fission Prod
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE