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  2. List of radioactive nuclides by half-life - Wikipedia

    en.wikipedia.org/wiki/List_of_radioactive...

    francium-219: 20 meitnerium-275: 20 boron-12: 20.2 radon-197m: 21 rutherfordium-260: 21 astatine-193m1: 21 californium-238: 21.1 beryllium-12: 21.49 francium-218m1: 22.0 tennessine-293: 22 polonium-191: 22 francium-200: 24 nitrogen-22: 24 actinium-206: 25 uranium-217: 26 actinium-220: 26.36 thorium-216: 26.8 meitnerium-268: 27 astatine-193m2 ...

  3. Francium - Wikipedia

    en.wikipedia.org/wiki/Francium

    Francium-223 is the most stable isotope, with a half-life of 21.8 minutes, [8] and it is highly unlikely that an isotope of francium with a longer half-life will ever be discovered or synthesized. [22] Francium-223 is a fifth product of the uranium-235 decay series as a daughter isotope of actinium-227; thorium-227 is the more common daughter. [23]

  4. TNT equivalent - Wikipedia

    en.wikipedia.org/wiki/TNT_equivalent

    TNT equivalent is a convention for expressing energy, typically used to describe the energy released in an explosion.The ton of TNT is a unit of energy defined by convention to be 4.184 gigajoules (1 gigacalorie), [1] which is the approximate energy released in the detonation of a metric ton (1,000 kilograms) of TNT.

  5. Isotopes of francium - Wikipedia

    en.wikipedia.org/wiki/Isotopes_of_francium

    Francium (87 Fr) has no stable isotopes, thus a standard atomic weight cannot be given. Its most stable isotope is 223 Fr with a half-life of 22 minutes, occurring in trace quantities in nature as an intermediate decay product of 235 U. Of elements whose most stable isotopes have been identified with certainty, francium is the most unstable.

  6. Table of explosive detonation velocities - Wikipedia

    en.wikipedia.org/wiki/Table_of_explosive...

    Table of Explosive Detonation Velocities; Explosive class Explosive name Abbreviation Detonation velocity (m/s) Test Density (g/cm 3) ; Aromatic: 1,3,5-trinitrobenzene

  7. Frisch–Peierls memorandum - Wikipedia

    en.wikipedia.org/wiki/Frisch–Peierls_memorandum

    The energy liberated in the explosion of such a super-bomb is about the same as that produced by the explosion of 1,000 tons of dynamite. This energy is liberated in a small volume, in which it will, for an instant, produce a temperature comparable to that in the interior of the sun. The blast from such an explosion would destroy life in a wide ...

  8. However, it would appear that francium perchlorate has been formed, as it coprecipitates with caesium perchlorate, and several other insoluble francium salts are similarly known (Hyde, E.K., Radiochemical Methods for the Isolation of Element 87 (Francium), J. Am. Chem. Soc., 1952, 74, 4181) The article also quotes a value for the Pauling ...

  9. Antimatter weapon - Wikipedia

    en.wikipedia.org/wiki/Antimatter_weapon

    An antimatter weapon is a theoretically possible device using antimatter as a power source, a propellant, or an explosive for a weapon.Antimatter weapons are currently too costly and unreliable to be viable in warfare, as producing antimatter is enormously expensive (estimated at US$6 billion for every 100 nanograms), the quantities of antimatter generated are very small, and current ...