Two particles annihilating each other and you can see explosion with the naked eye, very big energy is release in the explosion because the electron and positron have almost zero size.
Why sometimes it seems that the particle that creates the trail doesn't originate from the radioactive sample? And why the trail only forms when the particle is at a certain distance from the sample?
@freemanx2x These could be several things: a gamma-ray photon from a positron-electron annihilation scattering an electron from an atom, cosmic rays unrelated to the sample etc.
Cloud chambers are not very good detectors and generally clouds will only form around "slow" moving charged particles because these are more heavily ionizing. If you look carefully some tracks stop before leaving the chamber and are more dense towards the end - this is the particle slowing down and stopping.
MoorePhysics, could you please tell me the process of this? There are several problem that we're facing, like the decay energy and the supersaturated solution used inside the vacuum chamber. Need help.
Correct - the Fluorine decays into Oxygen-18, a positron and an electron neutrino and energy is released. This is the end of the decay chain since O-18 is stable and exists in nature where its ratio to O-16 (the most abundant isotope) in ice cores can be used to measure the mean global temperature when the ice was laid down.
this is so awesome
b0gdanB 3 months ago
Two particles annihilating each other and you can see explosion with the naked eye, very big energy is release in the explosion because the electron and positron have almost zero size.
elchippe 6 months ago
Why sometimes it seems that the particle that creates the trail doesn't originate from the radioactive sample? And why the trail only forms when the particle is at a certain distance from the sample?
freemanx2x 8 months ago
@freemanx2x These could be several things: a gamma-ray photon from a positron-electron annihilation scattering an electron from an atom, cosmic rays unrelated to the sample etc.
Cloud chambers are not very good detectors and generally clouds will only form around "slow" moving charged particles because these are more heavily ionizing. If you look carefully some tracks stop before leaving the chamber and are more dense towards the end - this is the particle slowing down and stopping.
MoorePhysics 3 weeks ago
That clouds apears becose the mowement of the particle or becouse of the energy emited when positron colides with electron?
utkanos 10 months ago
MoorePhysics, could you please tell me the process of this? There are several problem that we're facing, like the decay energy and the supersaturated solution used inside the vacuum chamber. Need help.
Mangoose95 11 months ago
What is the average half-life of F-18?
BotGuides4U 11 months ago
@BotGuides4U
109.77 minutes
Mangoose95 11 months ago
Correct - the Fluorine decays into Oxygen-18, a positron and an electron neutrino and energy is released. This is the end of the decay chain since O-18 is stable and exists in nature where its ratio to O-16 (the most abundant isotope) in ice cores can be used to measure the mean global temperature when the ice was laid down.
MoorePhysics 1 year ago
@MoorePhysics Science is SO awesome.
ghostalin 1 year ago 2
@ghostalin Total win.
LuxuryBarrage 8 months ago
Turns into oxygen 18
vmelkon 1 year ago
This is amazing...
I have to study on this!
PermafrostMonkey 2 years ago