Distancing an accidental from the note using the right padding property
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It is possible to distance an accidental from the note head by setting suitably the right-padding property of AccidentalPlacement.
\version "2.24.0"
%% http://lsr.di.unimi.it/LSR/Item?id=4
\relative c'' {
\time 1/4
\once \override Staff.AccidentalPlacement.right-padding = #.5 cis
\once \override Staff.AccidentalPlacement.right-padding = #1 cis
\once \override Staff.AccidentalPlacement.right-padding = #1.5 cis
\once \override Staff.AccidentalPlacement.right-padding = #2 cis
}