Image:Nuclear Fireball Radius and Temperature.png

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  • Description: Radius and temperature vs. time of the fireball of a 20 kiloton nuclear air burst
  • Author: SiriusB
  • Source: Self-generated fit of curves in Glasstone/Dolan, The Effects of Nuclear Weapons (1977)
  • Additional note: The new image has been improved in quality by plotting as Postscript and then converting it to PNG, instead of using the PNG terminal of Gnuplot. The fireball diameter fit now uses a modified formula. It differs a bit from the original plot in Glasstone/Dolan (1977), but better fits the data shown in the text of the same source. The diameter formula is
D(t)=2\cdot\left[\left(R_{-4}(10^4\,t)^Q\right)^{-3}+R_\infty^{-3}\right]^{-1/3}\ ;\quad Q=\frac{1}{3}\cdot\log_{10}\frac{R_{-1}}{R_{-4}}

where t is the time after detonation in seconds, R_{-4}=13\,\mathrm{m} (radius at 10-4 seconds), R_{-1}=215\,\mathrm{m} (radius at 10-1 s) and R_\infty=236\,\mathrm{m} (final radius). The fit is valid from 10-4 seconds to a few seconds.

[edit] Licensing

I, the copyright holder of this work, hereby publish it under the following licenses:
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File history

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Date/TimeDimensionsUserComment
current10:36, 4 February 20051,337×1,348 (63 KB)SiriusB (Better quality)
09:46, 8 December 2004577×580 (7 KB)SiriusB (Radius and temperature vs. time of a 20 kiloton nuclear air burst)
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