Fermi Energy of 40P 50N Nucleus Sphere

In summary, to calculate the Fermi energy for neutrons confined in a nucleus with 40 protons and 50 neutrons, we use the formula EF= ((h-bar)^2*(3*pi^2*n)^(2/3))/2m, where m is the mass of fermions and n is the number density of fermions. This applies to protons and neutrons since they are both fermions. Additionally, the given radius can be used to find the number density, with the relation n = N/V where N is the total number of protons and neutrons and V is the volume of the nucleus. It is important to use the correct mass of fermions and number density in the formula.
  • #1
viviane363
17
0

Homework Statement


I am wondering about something:
Calculate the Fermi energy for the neutrons confined to a nucleus with 40 protons and 50 neutrons which roughly forms a sphere of radius 4.6 10^(-15) m.


Homework Equations


the formula of the fermi Energy is EF= ((h-bar)^2*(3*pi^2*n)^(2/3))/2m
m:mass of electron, n = number density of electron


The Attempt at a Solution


Then, in the problem we are given protons and neutrons. Where does influence the formula? and where do we use the radius there is one relation that is n = N/V ( N= protons+Neutrons)
and V is the volume of the sphere.
is it right?
Also, do we use the mass of electron or the mass of proton = neutron this time?
 
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  • #2
The mass should be of fermions in general - not just electrons. Same with the number density. And since protons and neutrons are fermions, you're equation should work.
 

FAQ: Fermi Energy of 40P 50N Nucleus Sphere

What is the Fermi Energy of a 40P 50N Nucleus Sphere?

The Fermi Energy of a 40P 50N Nucleus Sphere refers to the energy level at which a nucleon (proton or neutron) has a 50% probability of occupying a state in the nucleus. It is a measure of the energy needed to remove a nucleon from the nucleus.

How is the Fermi Energy of a Nucleus Sphere calculated?

The Fermi Energy of a Nucleus Sphere is calculated using the formula E = (3/5)(h^2/2m)(3π^2N/V)^(2/3), where E is the Fermi Energy, h is Planck's constant, m is the mass of a nucleon, N is the total number of nucleons, and V is the volume of the nucleus sphere.

What is the significance of the Fermi Energy of a Nucleus Sphere?

The Fermi Energy of a Nucleus Sphere is an important concept in nuclear physics as it helps us understand the behavior and properties of nucleons within the nucleus. It also plays a crucial role in determining the stability and structure of a nucleus.

How does the Fermi Energy of a Nucleus Sphere affect nuclear reactions?

The Fermi Energy of a Nucleus Sphere plays a crucial role in nuclear reactions as it determines the energy threshold for a nucleon to be removed from the nucleus. It also affects the likelihood of nuclear reactions occurring, as nucleons with higher energies are more likely to participate in reactions.

Can the Fermi Energy of a Nucleus Sphere be experimentally measured?

Yes, the Fermi Energy of a Nucleus Sphere can be experimentally measured using various techniques such as electron scattering and nuclear reactions. These measurements provide valuable insights into the properties and behavior of nucleons within the nucleus.

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