Explosive burning

I. Undisturbed granular bed at initial compaction. II. Explosive burning to give linear increase of pressure with time compaction occurs in most porous charges. III. Accelerated burning and pressure buildup to form precursor shock (Ref 69a)... 

A physical explosion, for example, a boiler explosion, a pressure vessel failure, or a BLEVE (Boiling Liquid Expanding Vapor Explosion), is not necessarily caused by a chemical reaction. Chemical explosions are characterized as detonations, deflagrations, and thermal explosions. In the case of a detonation or deflagration (e.g., explosive burning), a reaction front is present that proceeds through the material. A detonation proceeds by a shock wave with a velocity exceeding the speed of sound in the unreacted material. A... 

Reactivity A substance s susceptibility to undergoing a chemical reaction or change that may result in dangerous side effects, such as explosion, burning, and corrosive or toxic emissions. 

Hauck B, Maeder A and Meynet G (eds) University of Texas Press, Austin, p 113-154 Woosley SE, Arnett WD, Clayton DD (1973) The explosive burning of oxygen and silicon. Astrophys J Suppl 26 231-312... 

If no explosion takes place, introduce more of the explosive, gradually increasing the quantity until a weight of 5g is reached and repeat the test with 5 g three times. Observe the manner in which the explosive burns and the time that elapses between adding the explosive to the basin to the extinction of the flame... 

A substance is classed as a deflagrating explosive when a small amount of it in an unconfined condition suddenly ignites when subjected to a flame, spark, shock, friction or high temperatures. Deflagrating explosives burn faster and more violently than ordinary combustible materials. They burn with a flame or sparks, or a hissing or crackling noise. 

Explosive burning of the hydrogen-filled dirigible Hindenburg during landing at Lakehurst, New Jersey, on May 6,1937, killed 36 of the 97 persons aboard. 

On April 26, 1986, one of four nuclear reactors exploded more at the Chernobyl power station in Ukraine, a country that used to be a part of the old Soviet Union. The explosion burned for nine days, proving to be the worst nuclear accident in history. The disaster released at least 100 times more radiation than the atom bombs dropped in Nagasaki and Hiroshima. Much of the fallout fell close to Chernobyl,... 

Table 1. The 25 most abundant nuclei, and the processes which formed them. Here, NSE refers to nuclear statistical equilibrium (cf. Clayton, 1968) which occurs in explosive burning at high temperature, producing iron group nuclei. ...

Conditions for explosive burning can only occur if the core collapses at a speed vs, the local sound speed. In a star with an iron core, vs 107ms 1, which implies a collapse timescale < 3 s - essentially a dynamical timescale. Any slower and the star can reorganize itself without an explosion, so a lot of energy ( 1014 Jkg-1) must be removed rapidly. 

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