Escape probability of a particle in a sphere

In summary, the conversation discussed the possibility of using statistical mechanics to determine the probability of a particle escaping through a hole on the surface of a sphere without potential energy. The idea of comparing the areas and considering the speed of the particle was suggested, while also mentioning the potential dependence on geometry. Additionally, looking into Brownian Motion was suggested as a potential solution.
  • #1
anon_man
1
0
how can we use statistical mechanics to find the probability of a particle inside a sphere to escape through a hole on the surface (no potential energy) ? any ideas ??
 
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  • #2
Look up Brownian Motion.

Cheers.Roman.
 
  • #3
I don't think this is statistical mechanics. Just compare the area of the hole to the area of the sphere, and consider how fast the particle is moving.
 
  • #4
Probability of particle traveling at speed U escaping from volume V through aperture area A in time period dT will be proportional to U.A.dT/V. Don't know what the multiplicative constant would be - perhaps depends on geometry.
 

Related to Escape probability of a particle in a sphere

1. What is the definition of escape probability in a particle in a sphere?

The escape probability of a particle in a sphere refers to the likelihood that a particle will escape from the sphere's confinement and be released into the surrounding space.

2. How is escape probability calculated for a particle in a sphere?

The escape probability can be calculated by taking into account the particle's initial velocity, the sphere's radius, and the gravitational force acting on the particle.

3. How does the escape probability change as the particle's initial velocity increases?

As the particle's initial velocity increases, the escape probability also increases. This is because the particle has more kinetic energy to overcome the sphere's gravitational force and escape.

4. What factors affect the escape probability of a particle in a sphere?

The escape probability of a particle in a sphere is affected by the particle's initial velocity, the sphere's radius, the gravitational force, and the presence of any other external forces acting on the particle.

5. How is the escape probability related to the concept of escape velocity?

The escape probability is related to the concept of escape velocity, which is the minimum velocity required for a particle to escape from the gravitational pull of a massive body. In the case of a particle in a sphere, the escape probability increases as the initial velocity approaches the escape velocity for that specific sphere.

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