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Positrons are antimatter. They do not exist for very long in the universe we know, and that is because they attempt to combine with any available electron in mutual annihilation. We can look at places where positrons appear and make some comments about these tiny units of (anti)matter. And we'll find there isn't really a way to "count" them to know how many there might be.
The positron can appear naturally as a result of pair production when gamma rays of sufficient energy are present, but, as stated, any positron present around "normal" matter will soon combine with an electron, and both particles will be completely converted into energy. Positrons can also be created in a kind of radioactive decay called beta plus decay. Again, the positron appears amid "normal" matter, and it isn't very long before it finds an electron to "merge" with. Positrons are created in astronomical numbers inside stars, but they continue to participate in the nuclear reactions there. We don't generally find positrons hanging around anywhere.
What else can I help you with?
The electric current in a medical conductor is carried by positive electrons or electrons?
The answer is electrons. I assume you mean positrons (anti-electrons) by positive electrons, and positrons and electrons go boom when they meet, so we don't see many positrons around.
What are e- and e plus plus particles?
That might refer to electrons and positrons (aka anti-electrons).That might refer to electrons and positrons (aka anti-electrons).That might refer to electrons and positrons (aka anti-electrons).That might refer to electrons and positrons (aka anti-electrons).
What is beta radiation made from?
Electrons or positrons.
What has the author Ann T Nelms written?
Ann T. Nelms has written: 'Energy loss and range of electrons and positrons' -- subject(s): Electrons, Positrons
Do electrons attract positrons and vice versa?
Yes. And when this occurs, they will collide and annihilate one another.
Are gamma rays positrons?
No, they are not.Gamma rays are photons - just like light. They are electrically neutral. They move at the speed of light. Positrons, also known as anti-electrons, have a positive charge. They move at speeds less than the speed of light.
Electrons negative charge?
Yes and positrons are positive!
Does beta decay produce particles?
Yes, electrons and positrons.
What has 20 positrons and is found inside teeth and bones?
Calcium
How Positron emission tomography work?
A tracer courses through the bloodstream to the target organ, where it emits positrons. The positively charged positrons collide with negatively charged electrons, producing gamma rays.
What is elctricity a movement of?
Electricity if the movement of electrons in matter, or positrons in antimatter.
How are gamma rays readable by photomultiplier-scintillator combinations produced by positron emission tomography?
the tracer courses through the bloodstream to the target organ, where it emits positrons. The positively charged positrons collide with negatively charged electrons,
