Proton-Boron Fusion reaction: My thoughts.

[P G]

For a long time, I have been thinking about proton-Boron fusion reaction. Today the main focus is on deuterium-tritium reaction and both are gaseous. They need to be converted into plasma for fusion. But, Boron is solid and it can react with Proton i.e. simple hydrogen nuclei. Proton accelerators are already available. We just need a solid Boron bar and hit that with a Proton beam with sufficient energy. A few Protons from the beam will certainly hit the nucleus of the Boron and will fuse and generate power that can be easily converted into electricity.
In case of a gaseous materials, the beam will cause ionisation and much more energy will be lost through ionisation. But, that's the not the case for solid. As per this paper at https://lib.dr.iastate.edu/cgi/viewcontent.cgi?referer=&httpsredir=1&article=1103&context=ameslab_iscreports, the number of elections released per Proton is just 3.39 and the energy loss is negligible.

[PhysicsProf]

For a long time, I have been thinking about proton-Boron fusion reaction. Today the main focus is on deuterium-tritium reaction and both are gaseous. They need to be converted into plasma for fusion. But, Boron is solid and it can react with Proton i.e. simple hydrogen nuclei. Proton accelerators are already available. We just need a solid Boron bar and hit that with a Proton beam with sufficient energy. A few Protons from the beam will certainly hit the nucleus of the Boron and will fuse and generate power that can be easily converted into electricity.
In case of a gaseous materials, the beam will cause ionisation and much more energy will be lost through ionisation. But, that's the not the case for solid. As per this paper at https://lib.dr.iastate.edu/cgi/viewcontent.cgi?referer=&httpsredir=1&article=1103&context=ameslab_iscreports, the number of elections released per Proton is just 3.39 and the energy loss is negligible.

You cite a 1955 paper above.  Here is the abstract:

Abstract
Stray electrons were produced in the Ames Laboratory linear accelerator by the ion beam striking the target
and various other parts of the accelerator. This experiment was done to determine if the stray electrons from
parts of the accelerator other than the target could be reduced by using construction materials other than
brass. Measurements of the number of electrons produced from several materials, however, indicated that
there is no particular advantage in using other materials in place of brass.

   Is this paper directly relevant to p-Boron fusion?  (I don't think so)

[P G]

This is just to show that number of ionisation and energy loss is less in case of metallic solids in comparison to gas.

[P G]

https://revolution-green.com/breakthroughs-make-commercial-laser-nuclear-fusion-billion-times-improvements-yield/
A possible way of doing what I have proposed.