Thermal Control System for the Investigation of Specific Absorption Rates for Specimens Exposed to Electromagnetic Radiation
Final 1 Sep 1989-31 Aug 1990
QUESTECH INC FALLS CHURCH VA
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A thermal control system was developed to automatically maintain biological and chemical specimens at a controlled thermal profile during exposure to electromagnetic radiation to aid in the investigation of specific absorption rates. Hot and cold air supplies are mixed using mass flow control valves to generate an air source of controlled temperature at a constant mass flow rate. This air source is used to cool or heat the specimen which is within a low thermal-mass holder. By maintaining a constant mass flow rate for the air, the temperature difference between the input and exhaust air will directly indicate the heat energy removedadded to the specimen. A non-radiofrequency field perturbing temperature probe is inserted into the specimen to provide the temperature information to the controller.
- Nuclear Radiation Shielding, Protection and Safety