Merci.
Le résumé en tête d'article :
In a burning plasma state1–7
, alpha particles from deuterium–tritium fusion reactions redeposit their energy and
are the dominant source of heating. This state has recently
been achieved at the US National Ignition Facility8 using
indirect-drive inertial-confinement fusion. Our experiments
use a laser-generated radiation-filled cavity (a hohlraum) to
spherically implode capsules containing deuterium and tritium
fuel in a central hot spot where the fusion reactions occur. We
have developed more efficient hohlraums to implode larger
fusion targets compared with previous experiments9,10. This
delivered more energy to the hot spot, whereas other parameters were optimized to maintain the high pressures required
for inertial-confinement fusion. We also report improvements
in implosion symmetry control by moving energy between
the laser beams11–16 and designing advanced hohlraum geometry17 that allows for these larger implosions to be driven at
the present laser energy and power capability of the National
Ignition Facility. These design changes resulted in fusion powers of 1.5 petawatts, greater than the input power of the laser,
and 170 kJ of fusion energy18,19. Radiation hydrodynamics simulations20,21 show energy deposition by alpha particles as the
dominant term in the hot-spot energy balance, indicative of a
burning plasma state.
C'est à Livermore, Californie.
il ya cette page :
https://www.pmi.org/learning/library/na ... %20science. qui présente cette installation scientifique.
La construction s'est terminée en 2009 et ça a couté 3.5 milliards de dollars.
Une brève page sur le Wikipedia en Français :
https://fr.wikipedia.org/wiki/National_ ... n_FacilityMerci.
Le résumé en tête d'article :
In a burning plasma state1–7
, alpha particles from deuterium–tritium fusion reactions redeposit their energy and
are the dominant source of heating. This state has recently
been achieved at the US National Ignition Facility8 using
indirect-drive inertial-confinement fusion. Our experiments
use a laser-generated radiation-filled cavity (a hohlraum) to
spherically implode capsules containing deuterium and tritium
fuel in a central hot spot where the fusion reactions occur. We
have developed more efficient hohlraums to implode larger
fusion targets compared with previous experiments9,10. This
delivered more energy to the hot spot, whereas other parameters were optimized to maintain the high pressures required
for inertial-confinement fusion. We also report improvements
in implosion symmetry control by moving energy between
the laser beams11–16 and designing advanced hohlraum geometry17 that allows for these larger implosions to be driven at
the present laser energy and power capability of the National
Ignition Facility. These design changes resulted in fusion powers of 1.5 petawatts, greater than the input power of the laser,
and 170 kJ of fusion energy18,19. Radiation hydrodynamics simulations20,21 show energy deposition by alpha particles as the
dominant term in the hot-spot energy balance, indicative of a
burning plasma state.
C'est à Livermore, Californie.
il ya cette page : https://www.pmi.org/learning/library/national-ignition-facility-major-obstacles-6571#:~:text=In%201996%2C%20the%20United%20States%20Department%20of%20Energy,knowledge%20of%20astrophysics%2C%20materials%20science%2C%20and%20nuclear%20science. qui présente cette installation scientifique.
La construction s'est terminée en 2009 et ça a couté 3.5 milliards de dollars.
Une brève page sur le Wikipedia en Français : https://fr.wikipedia.org/wiki/National_Ignition_Facility