The Vault - Fallout Wiki

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The Vault - Fallout Wiki
Nuclear Physicist
Nuclear Physicist.png
Fallout 4
RequirementsIntelligence 9
Level 1, 14, and 26
EffectsRadiation weapons do more damage, and fusion cores last longer.
base id001d246f (level 1)

001d2470 (level 2)

001d2471 (level 3)

With the Nuclear Physicist perk, radiation weapons inflict more damage and Fusion Cores last longer. You may even gain the ability to eject a Fusion Core from your Power Armor, causing a deadly explosion.

Fallout 4 loading screen hints

Nuclear Physicist is a perk in Fallout 4.


  • With the first rank of this perk, radiation weapons deal 50% more damage, and fusion cores last 25% longer. The second rank raises the bonus damage for radiation weapons to 100%, and fusion cores last 50% longer. The third rank allows fusion cores to be ejected like devastating grenades and they last twice as long.
  • To use the fusion core grenade effect (which explodes like a Mini Nuke), the player has to equip a non-melee weapon and hold the grenade button. The fusion core will drop out of the back of the Power Armor suit, and start a grenade countdown.
  • The extra fusion core duration effect applies to Gatling lasers: The Gatling will receive the full 500 units of power, but when expended, the fusion core is not remved, but placed back into the inventory with a 25% or 50% charge.