Title :
Frequency drift for quartz resonator irradiated by CO gamma ray
Author :
Obara, Shigeru ; Koyama, Mitsuaki ; Chiba, Akio ; Fukuda, Hideaki ; Ohba, Hideo
Author_Institution :
Nihon Dempa Kogyo Co. Ltd., Japan
fDate :
31 May-2 Jun 1989
Abstract :
An investigation and research is reported into the radiation environment of a geostationary satellite and the radiation resistance of quartz resonators to be installed in artificial satellites. The total absorbed dose of a synchronous satellite in a geostationary orbit reaches about 1×104 Gy in ten years. For example, the rate of change of the frequency of a quartz resonator manufactured from an unswept crystal with a Q-value of about 2.8 million was about 0.2×10-6 at a total absorbed dose of 1×10 5
Keywords :
Q-factor; aerospace instrumentation; artificial satellites; crystal resonators; environmental testing; frequency stability; gamma-ray effects; quartz; radiation hardening (electronics); 100 kGy; 60Co gamma rays; Q-factor; artificial satellites; frequency drift; frequency rate of change; geostationary orbit; geostationary satellite; quartz resonator; radiation environment; radiation resistance; synchronous satellite; total absorbed dose; unswept crystal; Artificial satellites; Cosmic rays; Electron beams; Geomagnetism; Ovens; Protons; Pulse measurements; Resonant frequency; Tellurium; Testing;
Conference_Titel :
Frequency Control, 1989., Proceedings of the 43rd Annual Symposium on
Conference_Location :
Denver, CO
DOI :
10.1109/FREQ.1989.68912
