What is the strength of the strong force in N units

Click For Summary
SUMMARY

The strength of the strong force, quantified by the strong coupling constant \(\alpha_s\), varies significantly with momentum transfer. At low energies, \(\alpha_s\) is approximately 1, which is crucial for understanding quark models and nuclear static properties. At the mass of the Z vector boson, \(\alpha_s\) decreases to about 0.1. The effective area of the strong interaction operates at a typical length scale of 1 femtometer and an energy scale of 100 MeV, leading to a rough estimate of 16,000 N, although this value does not represent a conventional force.

PREREQUISITES
  • Understanding of quantum chromodynamics (QCD)
  • Familiarity with the concept of coupling constants
  • Knowledge of particle physics, specifically quark models
  • Basic principles of nuclear interactions
NEXT STEPS
  • Research the implications of strong coupling constant \(\alpha_s\) in quantum chromodynamics
  • Study the role of the Z vector boson in particle interactions
  • Explore the relationship between energy scales and coupling constants in particle physics
  • Investigate the concept of effective area in nuclear cross-section calculations
USEFUL FOR

Physicists, particularly those specializing in particle physics and quantum chromodynamics, as well as students and researchers interested in the fundamental forces of nature.

Dilema
Messages
37
Reaction score
1
In addition.
1. what is the presure of this force (alternativly wat is the efferctiv area it is acting on?...nucleai corrss section area?).
 
Physics news on Phys.org
At the scales over which the strong force is relevant, it is not really appropriate to speak about forces. It is more accurate to talk about the strong interaction.
 
The typical length scale of the strong interaction is 1 femtometer, and the typical energy is 100 MeV. If you divide the two, you get 16000 N. This is not a force on anything, but it gives a rough idea how strong the strong interaction is.
A crane can exert the same force on an object (e. g. to lift a car) - but the crane is made out of 1030 atoms, not just a single nucleus.
 
The strength of the strong force is usually given in terms of \alpha_s, the strong equivalent of the electromagnetic fine structure constant \alpha. A difference between them is that \alpha_s has a strong variation with momentum transfer in a given process.
\alpha_s is close to 1 at low energies, important for quark model and nuclear static properties, and about 0.1 around the mass of the Z vector boson. There are theoretical speculations that \alpha_s would approach \alpha as the momentum transfer became infinite.
 

Similar threads

Graduate How does the strong force loses its strength with distance?
  • · Replies 3 ·
Replies
3
Views
3K
High School The Strong Nuclear Force: Is my understanding correct?
  • · Replies 14 ·
Replies
14
Views
4K
Graduate My Confusion Regarding the Strong Force
  • · Replies 6 ·
Replies
6
Views
2K
Graduate What is the strength of the strong force?
  • · Replies 11 ·
Replies
11
Views
3K
Undergrad Strong and Weak Nuclear forces at long ranges
  • · Replies 2 ·
Replies
2
Views
2K
Graduate If we could slowly vary the strength of the strong force.
  • · Replies 9 ·
Replies
9
Views
3K
Graduate Attractive strong force, isospin and hypercharges
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Measuring characteristic time of strong and weak interaction
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Understanding Nuclei Interactions: Strength of Strong and Weak Forces on Protons
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad ?Measuring the Strong Force: Strength vs Distance
  • · Replies 3 ·
Replies
3
Views
2K