Accession Number : AD0067003


Title :   Measurement of Intense Beams of Thermal Radiation.


Corporate Author : NAVAL RADIOLOGICAL DEFENSE LAB SAN FRANCISCO CA


Personal Author(s) : Broido, A ; Willoughby, A B


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/067003.pdf


Report Date : 01 Feb 1955


Pagination or Media Count : 50


Abstract : Thermal radiation calorimeters have been constructed with relatively thick receivers which permit the direct recording of integrated thermal energy dose as a function of time. However, it is shown that the rate of change of recorded temperature can be made proportional to the rate of delivery of energy within a reasonably short time constant. Thus, differentiation of the recorded temperature data will give an accurate picture of the irradiance-time history of an impinging pulse. Calorimeters have been successfully used both in the laboratory and in the field, to measure. with a time constant of 20 milliseconds or less, radiant energy pulses up to 100 cal/sq cm with peak irradiances up to 200 cal/sq cm/sec.


Descriptors :   *THERMAL RADIATION , MEASUREMENT , ENERGY , RECORDING SYSTEMS , CALORIMETERS


Subject Categories : Thermodynamics


Distribution Statement : APPROVED FOR PUBLIC RELEASE