Can we somehow achieve glare effect (like that radio active material small thick glow around the object) on an object using just Cycles material nodes (this is my 2nd I guess better formulated approach with this question)?
Something like the "glowing" laser sabres on this image:

I understood it can be achieved thru Glare effect in the Compositor, but I am curious/wonder if it can be done purely as a Cycles material somehow only with Cycles nodes.
For example I know I can add emission node and it would kind-off like shine, but that is not the same: it is like a light casting itself on other objects and producing shadows + there is no visible thick glow around the object.