Anyway, according to Lerner, on that article, Boron can make the pinch values of up to 24GG. So, both will be strongly suppressed. So, anyway, talking about 14.4GG actually is about talking about the use of decaborane!!!! :O
You know what`s fun? According to the table given by Lerner, 17GG is achieved with 1.1MA. Lerner could very well start using boron now and expect a nice demonstration of Boron with just 1.8MA fired by the cathode.