SURFACE BURST OF 100 TON TNT HEMISPHERICAL CHARGE (1961) PROJECT NO. 4 THERMAL MEASUREMENTS

Technical Report · Fri Jun 01 04:00:00 EDT 1962

OSTI ID:4786722

Tate, P A; Pattmann, J D.R.

The radiant flux from an exploding charge of 100 tons of TNT was recorded in selected color bands using high speed bolometers and photocells with appropriate filters. Thermoelectric calorimeters were used to measure the total radiant energy emitted. The heat pulse exhibited an initial maximum of radiant intensity followed by a minimum at about 2 ms after detonation and a second maximum at about 20 ms. Surface temperatures fo the fireball were calculated from the observed spectral distribution of energy. The maximum temperature decreased until at late times it was 2500 deg K characteristic of burning detonation products. There was no minimum of temperature. Two different types of instruments viewing different sides of the fireball gave the thermal yield as 3.8% and 6.6% of the total energy yield of the explosion. (auth)

• Research Organization: Canada. Defence Research Chemical Labs., Ottawa
• NSA Number: NSA-16-030161
• OSTI ID: 4786722
• Report Number(s): DRCL-371
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CALORIMETERS
COLOR
EFFICIENCY
ENERGY
EXPLOSIONS
FILTERS
GENERAL AND MISCELLANEOUS
HEATING
INSTRUMENTS
MEASURED VALUES
PHOTOELECTRIC CELLS
PRODUCTION
PULSES
RADIATIONS
SHOCK WAVES
SPECTRA
SURFACES
TEMPERATURE
THERMOELECTRICITY
THERMOMETERS
VELOCITY