Measurement of Intense Beams of Thermal Radiation.
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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1955
- Accession Number
- AD0067003
Entities
People
- A. B. Willoughby
- A. Broido
Organizations
- Naval Radiological Defense Laboratory