%0 Journal Article
%T Gamma Irradiation of Magnetoresistive Sensors for Planetary£¿Exploration
%A Ruy Sanz
%A Ana B. Fern¨¢ndez
%A Jose A. Dominguez
%A Boris Mart¨ªn
%A Marina D. Michelena
%J Sensors
%D 2012
%I MDPI AG
%R 10.3390/s120404447
%X A limited number of Anisotropic Magnetoresistive (AMR) commercial-off-the-shelf (COTS) magnetic sensors of the HMC series by Honeywell, with and without integrated front-end electronics, were irradiated with gamma rays up to a total irradiation dose of 200 krad (Si), following the ESCC Basic Specification No. 22900. Due to the magnetic cleanliness required for these tests a special set-up was designed and successfully employed. Several parameters of the sensors were monitored during testing and the results are reported in this paper. The authors conclude that AMR sensors without front-end electronics seem to be robust against radiation doses of up to 200 krad (Si) with a dose rate of 5 krad (Si)/hour and up to a resolution of tens of nT, but sensors with an integrated front-end seem to be more vulnerable to radiation.
%K magnetic devices
%K radiation effects in devices
%K Gamma ray effects
%K space applications
%K space radiation effects
%U http://www.mdpi.com/1424-8220/12/4/4447