0
What is meant by bombarding a thin sheet of beryllium by alpha particles?
Wiki User
∙ 12y ago
"Bombarding a thin sheet of beryllium by alpha particles" generates a neutron flux.
In nuclear weapons design, it is sometimes necessary to produce a heavy flux of neutrons at just the right instant in time, relative to the assembly of super prompt critical mass.
It turns out that beryllium is a good producer of neutrons when bombarded with alpha. The alpha source is often polonium. One design has the two in sheets that do not interact with each other, due to separation with gold and nickel, until the initiating shock wave compresses them together, along with the mass of fissile material, usually plutonium.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
A kind of antelope begining with G?
Guessing you meant "antelope" then I think you meant "GAZELLE"
What dyes are used to color earthworms?
You are not meant to!
What was meant by John Maynard Keynes' term a Carthaginian Peace?
He was talking in 1919 about the peace process and meant it was a temporary peace, leading to another war.
What is that Democratic republic?
Historically, "Democratic Republic" usually meant "socialist". "People's Democratic Republic" (or "Democratic People's Republic" meant "really, REALLY socialist".
What was Durer originally meant to follow his father as a?
goldsmith
Why beta has the least penetrating power?
It is not clear what is meant by 'beta'. Please rephrase it in a new question. It's pretty obvious this question is about radioactivity and the beta particles produced by that. In fact beta particles are not the least penetrating. It is the alpha particles that penetrate least. That's because they interact easily with atomic nuclei. Atomic nuclei are positively charged, like alpha particles, causing strong repulsion.
What is a sentence with bombard in it?
"Time to go bombard some Russians!""Captain! We're trapped! They keep bombarding us!""Our team kept bombarding the other one in a water balloon fight!"(No offense meant in these sentences. Simply used as demonstrations)
What is meant by the word radioactive?
emits radioactive particles.
What is meant by alpha label on tax return?
What is meant by the alpha label on a tax return is the letters that are to the left of the filers social security number on an IRS label. These are used by the IRS to verify the filers social security number.
What is meant by radioactive pollution?
high-energy subatomic particles
What were the conclusion of Rutherford alpha particles scattering experiment?
He observed that alpha particles can scatter (bounce) backwards off of matter. If matter was evenly distributed, the high energy particles should go through it like "a 15 inch shell through tissue paper" to paraphrase Rutherford. The fact that they bounced back meant that the charged matter (protons) must be distributed in small dense clusters so that the alpha particles (helium nuclei) hit these charges like a billiard ball and, if hit directly, could bounce straight back. This lead him to the understanding that atoms have a small central charged nucleus surrounded less densely by negative charges (electrons). It was, in some sense, the end of nuclear physics.
C8H9O2N Which element is present in the greatest proportion by number of particles?
Hydrogen is present in the greatest number of atoms, if that is what is meant by "particles" in the question.
What are two particles that matter have in common?
Atoms and molecules... If that's what u meant
What does foreign particles?
Something that is not meant to be there and generally causes harm or reduces performance.
What does foreign particles mean?
Something that is not meant to be there and generally causes harm or reduces performance.
What is bestosis?
I assume you meant: Asbestosis? Which is a lung disease resulting from the inhalation of asbestos particles.
What is meant by ionising radiation?
See the Wikipedia article 'Ionising Radiation' of which this is the introduction. Ionizing radiation consists of subatomic particles or waves that are energetic enough to detach (ionize) electrons from atoms or molecules. Ionizing ability depends on the energy of the impinging individual particles or waves, and not on their number. A large flood of particles or waves will not cause ionization if these particles or waves do not carry enough energy to be ionizing. Examples of ionizing particles are energetic alpha particles, beta particles, and neutrons. The ability of electromagnetic waves (photons) to ionize an atom or molecule depends on their wavelength. Radiation on the short wavelength end of the electromagnetic spectrum - ultraviolet, x-rays, and gamma rays - is ionizing.
