Problems with Fast Ignition fusion?

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Fast ignition fusion faces significant challenges, including the need to compress deuterium-tritium (DT) fuel to high densities while ensuring the cone tip can withstand extreme implosion pressures. The interaction of relativistic lasers, which exceed intensities of 10^20 W/cm², leads to complex electron generation issues. Additionally, the transport of these relativistic electrons in high-energy density (HED) plasmas is complicated by phenomena such as collective transport and filamentation, which can affect core heating and burn. For further understanding, the paper by M. Key provides a comprehensive review of fast ignition, along with additional references for deeper insights. Exploring these resources will clarify the complexities of points two and three.
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I came across these slides http://hedpschool.lle.rochester.edu/2009SummerSchool/lectures/Key.pdf which say that the main problems with Fast igniton fusion are

1. Compress DT fuel to high ρ, ρR around cone tip; cone tip must survive Gbar implosion pressure
2. Relativistic laser interaction (I>1020 W/cm2) & electron generation
3. Relativistic electron transport in HED plasmas; collective transport, filamentation, extreme E&B fields; core heating & burn

I understand 1. but not 2 and 3, i can't find any information online. Could anyone explain them to me please or point me to an article/book. Thank you
 
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