Did ecletron ever die ???

[quatumrulesoverall]

Everthing in this world has a beginning and then an end? Would in at any moment in time electron be considered as die ???

Waiting for all of your reply.

[Mercedes Benzene]

I'm pretty sure that electrons cannot "die".

[InfiniteNow]

What if it bumped into a positron?

[Mercedes Benzene]

What if it bumped into a positron?

 

Damnit. You're right.

I wasn't thinking of antimatter!:lightning

[quatumrulesoverall]

Great, could u tell me about what is called "positron" ????? ::) :eek_big:

[Chemnut]

Great, could u tell me about what is called "positron" ????? ::) :eek_big:

 

A positron is a particle of the same size as an electron but it has a positive (opposite) charge.

[Mercedes Benzene]

A positron is the "antiparticle" for an electron.

It have a +1 charge (opposite of an electron), and the same mass as an electron. Essentially, it's an electron's "evil twin".

They aren't really just "found" anywhere on earth, but are created through positron decay of certain radioisotopes.

[quatumrulesoverall]

Does it exist inside the nucleus ? Or where is it found ??? Would it affect any properties of the whole atom ????

[Mercedes Benzene]

Does it exist inside the nucleus ? Or where is it found ??? Would it affect any properties of the whole atom ????

 

It's not part of an atom. It exists by itself... as far as humans know.

Perhaps in some other dimension or something atoms have positrons instead of electrons, but obviously it doesn't matter since it would all be speculative.

[quatumrulesoverall]

It's not part of an atom. It exists by itself... as far as humans know.

Perhaps in some other dimension or something atoms have positrons instead of electrons, but obviously it doesn't matter since it would all be speculative.

So, is positron just another theory, and yet has not been seen?

[CraigD]

Everthing in this world has a beginning and then an end? Would in at any moment in time electron be considered as die ???

Waiting for all of your reply.

According to the Standard Model, I don’t think an electron can transform into any combination of particles that doesn’t include an electron, so my answer would be “an electron can’t ‘die’”.

 

As several previous posts have noted, an electron and its antiparticle, a positron, can interact to produce a 2 photons, and at some energies, also particles with mass, such as mesons.

So, is positron just another theory, and yet has not been seen?

Positrons have been observed in large numbers. They’re fairly easy to detect, due to the characteristic emission of 2 photons with frequencies in the gamma (2.4*10^18 + hz) range when one collide and annihilate with an electron.

 

This is discussed more in "’Antimatter factories’" in operation now and other posts in the recent thread 7204.

[Qfwfq]

Damnit. You're right.

I wasn't thinking of antimatter!:confused:

Or of weak interactions. :confused:

[quatumrulesoverall]

I just read a bit of articles about positron, however let say, if positrons have the abiltity to cancel out electrons, where on earth that we have matters exist? everything should have been cleared since according to some scientists the no of positron is equivalent as no of electrons.

[CraigD]

… everything should have been cleared since according to some scientists the no of positron is equivalent as no of electrons.

Why the universe contains anything but energy in the form of photons is one of the deep mysteries of physics.

 

Early theories suggested that the presence of matter rather than antimatter was due to random quantum fluctuations and luck – that the universe is just as likely to be made of antimatter as matter. The current best theory to explain how this came about, charge-parity symmetry violation.

 

Along with other symmetry violations, CP violation is an important theory. It won the 1980 Nobel Prize in Physics. Although the theory accurately predicts experimental observations, and roughly accounts for the presence of matter in the universe, it’s yet to be integrated into the fundamental formalism of quantum mechanics. The ongoing search for a “Theory of Everything”, which has generated such theories as string theory and holographic theory, is an attempt to fix this and other failings of current theories of quantum mechanics.

[myspip90]

In the beginning of everything there was a little bit more matter compared to antimatter. Matter, antimatter ratio : 1+10^(-7) : 1

 

One can "produce" an electron and a positron by colliding gamma rays or two electrons in high speed.

For example if you collide two electrons e-,e- you could end up with e-,e- and e-,e+ (e+ being the positron). It may seem strange that e-,e+ comes up from nothing, but as matter is closely connected to energy (special relativity E=mc^2) some of the energy turns into e-,e+.

 

Positrons are used in some medical diagnostic devices as the PET scan (Positron Emission Tomography)