How to make Neutrons - Backstage Science
ฝัง
- เผยแพร่เมื่อ 1 มี.ค. 2011
- One of the world's leading neutron sources is the ISIS facility, in Oxfordshire, UK. We take a look around its cavernous buildings and discover how it works.
Take a tour of its neighbour facility, Diamond, at this link: • Brighter than the Sun ... - วิทยาศาสตร์และเทคโนโลยี
There are a few ways that neutrons can be made. Neutrons are given off spontaneously by fissile materials. Fusion of deuterium atoms is a very important source of neutrons for lab experiments. Spallation, which is what is done here, uses protons traveling at near the speed of light to literally knock neutrons out of the target material.
Only 48 KiloWatts?!! You can't do proper physics until you can generate 1.21 GigaWatts!
I'm really enjoying this video series. Keep it up, guys!
Fantastic video! I love this channel. It's great to find out new stuff...
This channel is great since it introduces so many of the real places where science occurs. It gives people a feel and an actual image of scientific facilities. Most of the time I think people either view scientist as only playing with test tubes or sitting on a couch and doing some math, The scientific comunity is so much wider and diverse than that and these videos are a great glimpse of the facilities and the people behind these facilities. Thank you Brady.
awesome!! it's pretty cool to look at the practical way in which they actually get those subatomic particles out of the materials they're in :)
@BackstageScience well thank you for making the effort to get inside :D
@gmtbrs we've got a bonus video just on the spallation target coming up very shortly... we were very lucky they had just taken delivery of a new one on the day we filmed!!!! That only happens every few years!
I even held it in my hands, which was a great geek moment!
It's nice to hear about this kind of Science going on in the UK (not just at CERN, Prof. Brian Cox).
@superdau yes of course... just at urn of phrase in a short "headline"... in an upcoming video we'll show yu in detail the actual target the neutrons are dislodged from and what it's made from, etc... very cool!
How are the neutrons produced? And is the neutron target the sample target to be studied, or is it what emits the neutron beam?
Can someone explain to me exactly what and why they test materials in these accelerators?
Do u use magnetic field to bend the proton beam? If yes, how strong is it?
@shidoink my background is in journalism, so I've had a lot of experience with what to leave in and what to leave out.... but to be fair, the scientists I work with across all projects are pretty good at explaining stuff to me!!!
Can someone explain to me the neutron star phenomena? In documentary it was said that electrons fuse with protons to create neutron. How and why it happens?
@trespire the protons colide with the nucleus of the atoms of the sample, ejecting some stuff, including neutrons and gamma rays.
How long does the spallation target last? Can't imagine blasting relativistic protons into it is a gentle process! Is it replaced periodically?
I cannot "like" this enough.
im curious, mr editor.
I remember vaugely from Professor Poliakoff who said you were a student in the arts (directing yeah?) so how do you know what key information to include? you do a very good job to include the very key information, and im wondering how you know what to include?
In Chile, when you finish school you must choose almost blindly the carrer you want to study in university, why is that? because in our 17 or 18 of life we haven't seen all carrers in action, we haven't been there to see how an engineer works, how a chemist does his work and the environment he works in.. i believe those are the most important things we should consider when picking a carrer and this videos really help people like me to get hooked in science and realize how awesome this work is.
@SeeYouInMe probably because they have such difference in penetrative ability. Gamma rays are "completely" blocked by a few meters of concrete, while neutrons are (probably) not.
Pretty durned fantastic if y'ask me!
@anonysquirrel
Neutron beam I don't know. But search for "Anatoli Bugorski" when you want to know what it's like to put your head into a proton beam!
@mcjhn Gamma rays are high frequency electromagnetic radiation, similar to light, just at a much much much higher frequency, but they are a form of ionizing radiation and form a very real health risk, needless to say, you wouldn't last long, and the amount of time that you did would likely be painful. Secondly, Neutrons, despite their small size, are travelling at near light speed, so if it hit you, you'd well and truly still know about it. As for the separation question, unfortunately I dunno.
@DeathIzurfriend we can see atoms and quarks with technology.
How do they get all the money for this, is it all from the government or do they make their own money? or is it a mixture?
@rauc6788 Don't thank me, thank the scientists for letting me in!!!
@z0tx i feel hungery
What are they doing behind the red window @ 5:32?
I've just noticied how those labs are exactly the same, Look at Synchroton and ISIS Facility and even the CERN are built in the same way, an accelerator and lots of detectors and sometimes filters to obtain the right thing you want to study.
Its a clever way to propel progress, you invest in one big project that helps a gigantic amount of researches.
Heh, that pulse waveform looks familiar, granted a heck of a lot cleaner than the medical LINACs.
Not to diminish what's going on here, but are the neutrons really "made"? Isn't it just that the protons knock out existing neutrons from the target?
i see, so if i collect enough crystals i have more time in the ticket collecting dome.