Particle would turn one off (7)

I believe the answer is:

neutron

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'particle' is the definition.
(type of sub-atomic particle)

'turn one off' is the wordplay.
'off' indicates anagramming the letters.
'turn'+'one'='turnone'
'turnone' anagrammed gives 'NEUTRON'.

'would' is the link.
This may not be right. It may be part of another bit of the clue.

Can you help me to learn more?

(Other definitions for neutron that I've seen before include "tiny amount" , "Elementary particle with zero charge" , "one's not charged" , "Turn one (anag) - kind of bomb" , "Charged particle" .)

I've seen this clue in The Globe and Mail.

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