Neutrons need something that provides them with lots of chances to have interactions. Water is good too. What blocks neutrons may not block gamma and vise versa. To block neutrons and high energy particles like cosmic rays that actually have mass to them you need something like a crash barrier.
Comment on penetration tests
aaa@lemmy.sdf.org 3 months ago
idiot here. can someone explain to me how come neutrons can’t penetrate concrete compared to lead.
roguetrick@lemmy.world 3 months ago
jol@discuss.tchncs.de 3 months ago
Same. Aren’t neutrons capable of crossing the entire planet unless they directly colide with another particle?
Admetus@sopuli.xyz 3 months ago
I reckon you’re thinking of the neutrino which rarely interacts with matter.
Warl0k3@lemmy.world 3 months ago
I believe you’re thinking of neutrinos
GBU_28@lemm.ee 3 months ago
Neutrons are just so bonked up
jol@discuss.tchncs.de 3 months ago
Oh oops. I did mix them up.
HootinNHollerin@lemmy.world 3 months ago
If you throw a ball at a brick wall it will bounce. If you tire a ball into a ball put it will be slowed down and stop
mouserat@discuss.tchncs.de 3 months ago
Another idiot here who found this answer interesting: quora.com/Why-is-concrete-the-best-shield-for-neu…
aaa@lemmy.sdf.org 3 months ago
that’s very interesting, thanks.