Accession Number:

ADA037754

Title:

Thermal Radiative Losses from Graphite Calorimeters Used in Pulsed Electron Beam Experiments.

Descriptive Note:

Final rept.,

Corporate Author:

AIR FORCE WEAPONS LAB KIRTLAND AFB N MEX

Personal Author(s):

Report Date:

1976-11-01

Pagination or Media Count:

47.0

Abstract:

A study to analytically model the thermal behavior of a graphite calorimeter block subjected to an initially non-uniform temperature profile has been conducted. The model allows prediction of the amount of energy lost from the block by the time a uniform temperature profile is achieved. It is assumed that the only means of energy loss to the surroundings is that of thermal radiation the effects of convection and thermal conduction to the surroundings are neglected. In addition, it is assumed that the calorimeter is exposed to a uniform beam of energy with an area equal to that of the calorimeter face. Thus, conduction in the lateral directions is neglected. Finally, it is assumed that the beam energy is deposited instantaneously, with the resultant temperature profile being taken as an initial condition. The results of a parametric study in which the radiation losses are quantified for a variety of electron beam environments are presented. Finally, an evaluation of the manner in which calorimetry data are presently reduced is made. Author

Subject Categories:

  • Nuclear Radiation Shielding, Protection and Safety
  • Radioactivity, Radioactive Wastes and Fission Products
  • Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE