The artifact you’re looking for is Particle Deconstruction. It’s the Destiny 2 seasonal artifact mod that applies a stacking debuff to enemies when you damage them with fusion rifles or linear fusion rifles, boosting fusion damage up to the maximum stack.

How it works

  • Hit a target with a fusion rifle or linear fusion rifle.
  • Each hit adds a stack of the debuff.
  • At full stacks, the target takes much more damage from those weapons.

Important note

This was a seasonal artifact mod , so it was tied to a specific season rather than being a permanent artifact perk.

Related wording

Some newer discussions refer to a similar-sounding mod or perk depending on the episode/season, but the well-known fusion-rifle debuff artifact is Particle Deconstruction.

If you want, I can also tell you which current Destiny 2 artifact perk is the closest modern equivalent.