Question:What is the difference between flux and current?

In summary, the conversation discusses the difference between flux and current for neutrons and how to calculate them. Flux is a scalar value while current is a vector with direction. The question also touches on the ratio between total neutron current and flux and how to calculate it in MCNP.
  • #1
LeeGru
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TL;DR Summary
calculate the flux and current of neutron by MCNP
Guys,I need to calculate the flux and current of neutron by MCNP.So what's the difference between them ,and How to calculate them?
Any ideas?
 
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  • #2
Flux is a flow/area/time, so in the case of neutrons it would have units like neutrons/(cm^2 - sec). Current is a flow/time, so it would have units like neutrons/second. So the current will be the flux integrated over some surface. How you calculate theme depends on the problem given.
 
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  • #3
LeeGru said:
Guys, I need to calculate the flux and current of neutron by MCNP.So what's the difference between them ,and How to calculate them?
Flux is a scalar value, while current is a vector, which has a direction.

Is the question about neutron current (or particle current) or current density?
 
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  • #4
Astronuc said:
Flux is a scalar value, while current is a vector, which has a direction.

Is the question about neutron current (or particle current) or current density?
I need to calculate the ratio between the total neutron current and the total neutron flux.How could obtain this value?
 
  • #5
phyzguy said:
Flux is a flow/area/time, so in the case of neutrons it would have units like neutrons/(cm^2 - sec). Current is a flow/time, so it would have units like neutrons/second. So the current will be the flux integrated over some surface. How you calculate theme depends on the problem given.
Thank you very much.I need to calculate the ratio between the total neutron current and the total neutron flux.How could I obtain this value in MCNP
 

Related to Question:What is the difference between flux and current?

Question 1: What is flux?

Flux is the measure of the flow of a physical quantity through a given surface. It is represented by the symbol Φ and is measured in units of webers (Wb).

Question 2: What is current?

Current is the measure of the flow of electric charge through a conductor. It is represented by the symbol I and is measured in units of amperes (A).

Question 3: How are flux and current related?

Flux and current are related through Faraday's law of induction, which states that the induced electromotive force (EMF) in a closed circuit is equal to the negative rate of change of the magnetic flux through the circuit.

Question 4: What is the main difference between flux and current?

The main difference between flux and current is that flux is a measure of the flow of a physical quantity (such as magnetic field or heat), while current is a measure of the flow of electric charge.

Question 5: How are flux and current used in practical applications?

Flux and current are used in a variety of practical applications, such as in electrical engineering, physics, and materials science. They are essential for understanding and designing devices such as motors, generators, and transformers.

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