[modeless]

How about gamma irradiation?

[sanjayjc]

Mentioned in the article as having limited applicability:

"When a mold’s takeover of an artifact must be stopped, there’s gamma radiation—pelting it with electromagnetic energy from radioactive decay to kill fungi and spores. But this technique penetrates deeply and can extensively damage materials."

[TomatoCo]

Does neutron radiation have the same degradation? I know there's neutron embrittlement for metals but do more plastic materials suffer the same?

[Grimblewald]

Consider the mechanism by which neutrons destroy life. It very much degrades most other things as well, much like gamma radiation.

[HPsquared]

How about alpha radiation? That will not penetrate deeply.

[somekindaguy]

Mold does penetrate deeply, unfortunately