Is those who ask a question pupil? The teacher is told well to you ha.
The nucleus is played notch roughly it is two kinds, nuclear fission bomb and nuclear fusion bomb, the nucleus that nuclear fission bomb says commonly namely is played, the explosive material inside is the uranium, radioelement such as plutonium, nuclear fusion bomb basically is to point to h-bomb at present, the explosive material inside is isotropy deuterium tritium of hydrogen. (h-bomb also is not the fusion that go up plays strict significance, it is fusion fission mixes actually play)
So the nucleus with an one heavy gram plays complete explosion, how much is explosive area?
At present for technical condition, cannot explode at all! It is to the explosive area of real world 0, but to the destruction of your imagination the area may be infinity, terminal teacher tells you outside astral high-tech, make your psychology shadow a few smaller breath out.
Critical mass
What issue is critical Where is quality? Say simply, radioactivity material does not explode at any time, or the radioactivity material in nature dropped cosmic bomb early, small at ordinary times dispersive radioelement is to be in slowly emissive energy, specific is there many slow? Every kinds of element is different, can carry a search " half-life " will obtain exact value.
Gather in the radioelement only when rising, achieved particular weight (quality) moment, the distance is too close between the atom as a result of emissive sex element, can think big miscellaneous courtyard in get house people same, if a person puts rock-and-roll not to let others sleep, can let all round a few also put Beijing opera to judge play comic dialogue to give backstroke, whole finally toad of big miscellaneous courtyard makes a noise hole, everybody does not sleep!
This is a radioelement " nuclear chain reaction " , an atomic decay is radiative the energy that give sends out do not drop, can cause additionally several all round atomic disintegration, these a few have let respective all round other more atomic decay, it is then inside extreme time, the atomic number of disintegration increases with geometrical class, launch a tremendous energy, cause nuclear explosion, this is the principle of atom bomb.
And h-bomb, more laborious, there is a small fission to play inside h-bomb actually, this fission plays explosion, create the extreme environment of high temperature high pressure, resemble a small sun, can cause h-bomb at that time inside the nuclear reaction of fusion material, cause more massive explosion!
So how much is this critical mass? The critical mass of the U-235 below natural state is 48 kilogram. But the meeting when atom bomb detonate has spirited dynamite to undertake exceeding compression to U (can reduce critical mass) , the figure that can reach critical mass with least stock is globose. If be in all around try neutron reflexes stock, critical mass is OK and fewer. Have neutron catoptric globose uranium - 235 critical point is controlled for 15 kilograms. Plutonium is controlled for 10 kilograms.
Common uranium regards reflector uranium as the critical mass of 235 is 15 kilograms (33 pounds) . If use plutonium to try similar reflector, critical mass may be 5 kilograms (11 pounds) . Such, the uranium that the heart of atom bomb may have muskmelon volume only 235, or the plutonium of orange size, the common uranium that watermelon measurement uses all round does reflector, the diameter of two globes that cover closely together is 18 inches about. The heavy metal reflector of such appearance makes an appointment with a ton again.
But these are inscribed more than far advocate the 1 gram of the tentative idea!
If inscribe advocate the inquisitive is 1 gram nuclear material turns into completely energy form can give off how many energy, in using fokelore OK and simply then qualitative can equation E=MC^2, energy is equal to quality to multiply the square with velocity of light.
E=mc^2=0.001*(3*10^8)^2=9*10^13J (joule)
And the energy that 1KgTNT plunges into place to release is 4.2 million joule about, namely 4200KJ, 1 gram quality changes energy to be equivalent to the chemical energy that explosion of dynamite of twenty-one thousand four hundred tons of TNT releases.
But want to notice, problem advocate says one gram nucleus is played, even if can explode, explosive hind also cannot be all quality changeover energy, is will very few one part quality turns only for energy, accordingly, eye comes round to say, the energy that 1 kilogram uranous fission releases is equivalent to the energy that when dynamite of 20 thousand tons of TNT explodes, gives off. One gram is 20 tons of TNT.
The ram of a grenade is left and right sides of 50 grams TNT, kill and wound radius did not live inside 10 meters of limits, you are so so called what is explosive area does not know, if be to kill and wound an area, can consult Tianjin explodes greatly, that explosion is equivalent to 20 tons of TNT.
The energy that a kilogram of TNT gives off can move an a kilogram object 420 kilometers, or a 100 kilograms object is mobile 4.2 kilometers. Enough of a kilogram of TNT destroys the building of a 100 square metre completely. The aviation bomb of 3000 kilograms of level of domestic, backfill coefficient is 47% , it is 1400 kilograms TNT about. Can the pit that scamper gives a 1000 stere.
200 thousand tons of TNT are equivalent the nucleus is played explode for nothing (the limits that is apart from ground 200-500 rice) the medium-sized city that can destroy compose of a reinforced concrete completely to build (diametical 10-15 kilometer) the urban district, not the personnel below the circumstance of fortify kills and wound probability to be 60-80% , 2 million tons nucleus is played destroy effectiveness to be equivalent to 2-3 the might that nucleus of 200 thousand tons of equivalent plays, the nucleus plays equivalent to be not with destroy effectiveness to just become direct ratio concern. Play with the nucleus that deters at the strategy now so basic it is 20-40 of class of 10 thousand tons of equivalent. Make an example again, use at destroying Tokyo thoroughly such especially big city, need average dispersed 8-10 nucleus of equivalent of 200 thousand tons of TNT is played. 10 single warhead or 1-2 cent guides type strategy nuclear missile is enough.
So, simple estimation, 1 gram uranium is played be equivalent to 20 tons of TNT, can the large hole diameter that scamper gives 7 1000 stere many meters 20 (real data requires a test, explosive bulk likelihood and dynamite quality are not linear relation) blow up architectural area to be less than one kilometer hundreds of meters.
Disclose finally outside astral science and technology!
Want to realize 1 gram " the nucleus is played " still be possible on the technology actually, that is " antimatter " weapon, with 0.5 grams material and interblend of 0.5 grams antimatter close, can energy of translate into of will all quality, produce the massive explosion that sheet of 20 thousand tons of TNT measures, can destroy a small town child should be problem of it doesn't matter, estimation destroys an area to count the area of the kilometer for the diameter.
