4 ms·

https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.120.245003 https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.12... This article mentions they

by zaarn 5y ago

https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.120.245003 https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.12... This article mentions they used 1.5MJ of energy for the fusion process, it seems to be related to this news, on wikipedia you can find a cited NYTimes article stating 80% of the energy input was released. And I don't get where you get "couple order of magnitude too low" from, 500TW means nothing, it's a workload, not the total work the laser performed. Over a few nanoseconds, that checks out.

leephillips 5y ago
(1) That’s from 2018. (2) It does not say what you say it says. It does not state how much energy was “used”. The laser is about 1% efficient. (3) That 80%, which is the number that goes with this recent news, has nothing to do with the “energy input”. It is 80% of the energy that their models say was absorbed by the hohlraum. These are part of where my couple of orders of magnitude remark comes from.