Title :
Low dose proton radiation sensitivity of quartz resonators
Author :
Cash, P.E. ; Emmons, D.A. ; Stapor, W.
Author_Institution :
Frequency & Time Syst., USA
Abstract :
The results of the testing of 4 MHz, 10.24 MHz and 10.95 MHz 3rd overtone SC-cut quartz crystals confirms earlier work on 5th overtone AT-Cut, SC-Cut crystals. The testing showed that low dose rate radiation sensitivity is manufacturing lot dependent. Frequency variations due to low dose rate proton and gamma ray exposures varied between <1×10-11 and 4×10-10 per Rad. The majority of the crystals exhibited radiation sensitivities of 3-5×10-11 per Rad. The hypothesis that a nonlinear relationship exists between low dose rate and high total dose rate was confirmed. Testing indicated that the majority of crystals exhibited a conditioning effect during successive exposures to low dose radiation
Keywords :
crystal resonators; gamma-ray effects; proton effects; quartz; 10.24 MHz; 10.95 MHz; 4 MHz; SC-cut quartz; SiO2; conditioning effect; gamma ray exposures; manufacturing lot dependence; nonlinear relationship; proton radiation sensitivity; quartz resonators; total dose rate; Cobalt; Cyclotrons; Dosimetry; Frequency; Laboratories; Manufacturing; Oscillators; Photonic crystals; Protons; Testing;
Conference_Titel :
Frequency Control Symposium, 1996. 50th., Proceedings of the 1996 IEEE International.
Conference_Location :
Honolulu, HI
Print_ISBN :
0-7803-3309-8
DOI :
10.1109/FREQ.1996.559872
