SURFACE BURST OF 500-TON TNT HEMISPHERICAL CHARGE (1964) PROJECT NO. 4 THERMAL MEASUREMENTS

Authors
  1. Pattman, J.D.R.
  2. Tate, P.A.
Corporate Authors
Defence Chemical Biological and Radiation Labs, Ottawa ONT (CAN)
Abstract
The irradiance from an exploding charge of 500 tons of TNT was recorded in selected wavelength bands using high-speed bolometers and photocells with appropriate filters. Thermoelectric calorimeters were used to measure the total radiant energy emitted. The heat pulse had an initial maximum at 1.26 ms, a second maximum at 35 ms and a small third maximum at 300 ms. The surface temperature of the fireball calculated from irradiance measurements was about 10,000K at the initial maximum of intensity, dropping rapidly to 2000K, which temperature was maintained during most of the explosion. The total radiant energy was between 5 and 6% of the nominal explosive energy of 5xE11.
Report Number
DCBRL-488 — Previously accessioned as DSIS 66-10592
Date of publication
15 May 1966
Number of Pages
27
DSTKIM No
92-03669
CANDIS No
127022
Format(s):
Hardcopy;Originator's fiche received by DSIS

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