Heater substrate, alkali metal cell unit and atomic oscillator
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United States of America Patent
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Aug 18, 2015
Grant Date -
Feb 26, 2015
app pub date -
Aug 6, 2014
filing date -
Aug 20, 2013
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Abstract
A heater substrate for heating an alkali metal cell including an alkali metal includes a first heater wiring formed in a region surrounding an alkali metal encapsulating part in which the alkali metal is encapsulated; a second heater wiring formed in the region surrounding the alkali metal encapsulating part and inside the first heater wiring; and a third heater wiring formed outside the first heater wiring. A first electric current flowing in the first heater wiring is divided into a second electric current flowing in the second heater wiring and a third electric current flowing in the third heater wiring. A direction of the first electric current is opposite to a direction of the second electric current and a direction of the third electric current.
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