Gamma Irradiation of Magnetoresistive Sensors for Planetary Exploration

Sensors

Ruy Sanz¹  Ana B. Fernández¹  Jose A. Dominguez¹  Boris Martín¹ 

[1] Space Programs & Space Sciences Department of the Spanish National Institute of Aerospace Technology (INTA), 28850, Torrejón de Ardoz, Madrid, Spain;

关键词: magnetic devices;    radiation effects in devices;    Gamma ray effects;    space applications;    space radiation effects;   

DOI  :  10.3390/s120404447

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.