Electrons hit with one will be shut in (10)

I believe the answer is:

encloister

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'be shut in' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.

'electrons hit with one' is the wordplay.
'hit with' indicates anagramming the letters.
'one' becomes 'i' (Roman numeral).
'electrons' with its letters anagrammed with 'i' makes 'ENCLOISTER'.

'will' acts as a link.

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I've seen this clue in The Guardian.

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