**The Uranium 238 Decay
Chain**

Here is the decay chain involved in the production of Uranium
point-source pleochroic halos. The "polonium" halo is
claimed by 'Dr.' Gentry to lack all of the first **seven**
steps in the chain (up to and including 222Rn). My (John Brawley's)
hypothesis claims that the "polonium" halo lacks all of
the first **six** steps in the chain (up to but **not**
including 222Rn; in my work, Radon222 gas atoms *are* the
source of "polonium" halos. Once again, the alpha
decays are in **bold** text:

Read the table this way: "*This* **at**omic
**w**ei**g**h**t**ed **element**
decays with *this* **Likelihood** and *this*
**Energy** (in **m**illions of **e**lectron-**V**olts),
via *this* **decay type**, taking *this*
amount of **time** to do so, becoming (the element
in the next line in the table)". Things are not actually
that simple, of course; some of these decays also produce mostly
miniscule amounts of other elements, by "side chains"
of nuclear decays. For example, there are odd, unlikely, but
known side chains in the 214Bi-->214Po step, and in the 210Bi-->210Po
step, both involving either beta or alpha decays, but these are
unlikely to be seen in pleochroic halos. In general, this table
presents the salient data accurately.

At.Wgt./Element | Likelihood | Energy (MeV) | Decay type | Time involved |

238Uranium |
99% | 4.20 | alpha | 4.5 gigayears |

234Thorium | 77% | beta | 24 days | |

234Protactinium | beta | 6.7 hours | ||

234Uranium |
72% | 4.77 | alpha | 247,000 years |

230Thorium |
76% | 4.68 | alpha | 80,000 years |

226Radium |
95% | 4.78 | alpha | 1600 years |

222Radon |
100% | 5.49 | alpha | 3.83 days |

218Polonium |
99.9% | 6.00 | alpha | 3 minutes |

214Lead(Pb) | beta | 20 minutes | ||

214Bismuth | beta | 27 minutes | ||

214Polonium |
99% | 7.69 | alpha | 16 microseconds |

210Lead | beta | 21 years | ||

210Bismuth | beta | 5 days | ||

210Polonium |
100% | 5.30 | alpha | 138 days |

206Lead | No decay | None(stable) | None(st) | (forever) |