How can I write a character literal for a vertical tab ('\v', ASCII 11) in Scala?

'\v' doesn't work. (invalid escape character) '\11' should be it, but...

scala> '\11'.toInt
res13: Int = 9

But 9 is the ASCII code for a normal tab('\t'). What is going on there?

EDIT: This works and produces the right character, but I'd still like to know the syntax for a literal.

val c:Char = 11
scala
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