The above paper discusses the neutrons coming from Focardi's and Piantelli's Ni-H system.
In their runs that produced the most excess heat, neutron radiation was detected.
However, I don't think most of these neutrons were true neutrons. I think they were a form of strange radiation. Basically, a proton and electron in an ultra dense form with a magnetic field but no electric field.
I think this is the same SR that Parkhomov detected coming from his reactor.
Me356 detected neutrons coming from NiH. He saw that they interacted with lithium.
This makes me think that there are two big keys to pure powder based systems.
First, get enough atomic hydrogen into your nickel so that you can produce a good deal of SR.
Secondly, use other fuels around it to capture the SR.
I would be helpful if you provide a reference for an assertion. For example, a link to a post where me356 states that he "detected neutrons coming from NiH. He saw that they interacted with lithium."