how to set velocity in a spherical pattern?

this is box distribution
6495901--730845--upload_2020-11-5_21-1-12.png
6495901--730848--upload_2020-11-5_21-2-27.png

I don’t see a spherical option
6495910--730858--upload_2020-11-5_21-34-5.png

I guess the spherical option is not doing
what you want it to do? Since it’s actually on your screenshot

you could try ‘conform to sphere’ and mess with the parameters a bit

yeah it’s in the documentation, at least for v7 but not visible when i press spacebar.
Do you know if particles can be emitted within a signed distance field?