Question

what is beta-decay?

Answer 1

answer it plz!!!! uh hmm im confused

Answer 2

A nucleus that decays spontaneously by emitting an electron or a positron
is said to undergo beta decay. Like alpha decay, this is a spontaneous
process, with a definite disintegration energy and half-life. Again like alpha
decay, beta decay is a statistical process governed by Eqs. (13.14) and
(13.15). In beta minus (β − ) decay, an electron is emitted by the nucleus,
as in the decay of 32
15 P
32 32
15 16 P → S + e− +ν (T1/2 = 14.3 d) (13.22)
In beta plus (β+ ) decay, a positron is emitted by the nucleus, as in the
decay of 22
11 Na
22 22
11 10 Na → Ne + e+ +ν (T1/2 = 2.6 y) (13.23)
The symbols ν and ν represent antineutrino and neutrino,
respectively; both are neutral particles, with very little or no mass. These
particles are emitted from the nucleus along with the electron or positron
during the decay process. Neutrinos interact only very weakly with matter;
they can even penetrate the earth without being absorbed. It is for this
reason that their detection is extremely difficult and their presence went
unnoticed for long.

Answer 3

In beta-minus decay, a neutron transforms into a proton within the
nucleus according to
n → p + e– + ν (13.24)
whereas in beta-plus decay, a proton transforms into neutron (inside the
nucleus) via
p → n + e+ + ν (13.25)
These processes show why the mass number A of a nuclide undergoing
beta decay does not change; one of its constituent nucleons simply changes
its character according to Eq. (13.24) or (13.25).

Answer 4

excuse me what is positron

Answer 5

positron is=electron antiparticle: an elementary particle of antimatter that has the same mass as an electron, but the opposite electrical charge

Answer 6

okkk!!!! thanks
a lot of help u gave
bt stay on may be i get some doubt

Answer 7

ok sure

Answer 8

what actually are nutrinos

Answer 9

neutral elementary particle: a stable neutral elementary particle of the lepton group with a zero rest mass and no charge.
There are three types of neutrinos, associated respectively with the electron, and particle, and all have a spin of 1/2.

Answer 10

nutrinos=neutral elementary particle

Answer 11

is that clear

Answer 12

http://www.youtube.com/watch?v=NeydrHKvpYM
{ignore the mindless commentary

Answer 13

A beta minus particle is an electron
A beta plus particle is a positron (anti-electron)
\[\beta^-={e^-}\qquad\qquad\beta^+ =\,e^+\]
the only difference is the charge

A beta particle comes from a nuclear decay , when the nucleus converts a proton to a neutron or visa versa, attempting to stabilise the nucleus , nuclear isotopes with more protons than are stable will tend to beta-plus decay and consequently convert a proton to a neutron spitting out out a position