Molecules with 100 or so electrons to annihilate faster

In summary, the reason for molecules with 100 or so electrons to annihilate faster with a positron is due to the fact that the electrons are quantum mechanically smeared across a larger area. This is reflected in the highest positron lifetime observed in polymers and insulators, and the shortest in metals. This can be explained by the difference in electron density between these materials, with polymers and insulators having lower electron density and thus less stopping power compared to metals.
  • #1
talanum1
25
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I think the reason for molecules with 100 or so electrons to annihilate faster with a positron is because the electrons are quantum mechanicly smeared across a larger area.
 
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  • #3


Bob S said:
Positron lifetime is highest in polymers and insulators, shortest in metals. See slide 13 in
http://www.positronannihilation.net/Index_files/positron lifetime.pdf
Bob S
Polymers are mostly CmHn or CmHnOp and insulators are metal oxides, usually richer in oxygen. C, H and O have relatively low electron density, as opposed to metals, from period 4 and greater, have much greater electron density - which means greater LET (linear energy transfer) or greater stopping power, and more electrons with which to annihilate
 

Related to Molecules with 100 or so electrons to annihilate faster

1. What is the significance of molecules with 100 or so electrons?

Molecules with a large number of electrons have been found to exhibit unique properties and behaviors that can be useful in various scientific fields, such as materials science and pharmacology.

2. How do these molecules annihilate faster?

Molecules with a high number of electrons tend to have a high density of electron states, which can lead to faster annihilation rates when exposed to certain conditions, such as high energy radiation or collisions with other particles.

3. What factors affect the annihilation rate of these molecules?

The annihilation rate of molecules with 100 or so electrons can be influenced by various factors, such as molecular structure, electronic configuration, and external stimuli like temperature and pressure.

4. Can the annihilation process be controlled or manipulated?

Yes, scientists have been able to manipulate the annihilation rate of these molecules by using different techniques, such as altering the molecular environment or introducing specific catalysts.

5. What potential applications do these molecules have?

Molecules with a high number of electrons have shown promise in areas such as energy storage, drug delivery, and even quantum computing, making them a topic of ongoing research and exploration in the scientific community.

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