IDL from a light emitter will only emit light into the scene, which is invisible until it hits something. It won't make an object 'glow' in the way nyguy (I think) means.

Atmosphere only works with direct lights, not IDL. So it won't pick up the IDL emitted light from these light tubes.

If the glow has to be in-scene (as opposed to postwork) I would make a larger capsule prop to sit around each light tube, with a suitable semi-transparent Edge_Blend shader. I used this technique for the moon glow in my gallery image Chuu-ai, and it was easy to get a nice glow effect.

Cross-post!

"If I were a shadow, I know I wouldn't like to be half of what I should be."
Mr Otsuka, the old black tomcat in Kafka on the Shore (Haruki Murakami)