I got to the point of activating the reactor, and all I got was a shower of deadly particles. I thought since the charging rods worked on ambient particles it'd work on those but guess they're neutrons or something 'cause neither mode slowed them.

Are we really supposed to skedaddle before activating that reactor?

Factoriopedia digging on this topic is rewarded.

IIIII honestly forgot about the factoriopedia. thanks for the reminder.

I am not finding this entry. Unless it's supposed to be the entry called Unknown key: "entity-name.cerys-neutron-projectile" (Entity), which as no text.

How did you find the projectile entity? :)

SPOILERS:

The entry is 'gamma radiation' on the space tab.

The particle was just under unsorted.

Oh thanks, those are now hidden as intended.

There is supposed to be a factoriopedia entry?
I used the search function with 'gamma radiation' to no avail.
Actually, there are no Cerys-related entries at all!

What am I doing wrong here?

I took a look at Factoriopedia and noticed that the entry for gamma radiation had some missing text. This is now fixed.

If you're not seeing any entries at all for Cerys items, fluids, entities or recipes, another mod must be making modifications to Factoriopedia.

That's unfortunate!
I use some AAI mods and the new planets Castra, Maraxis and Cerys.

The AAI mods introduce this "informatron" widget.