Distribution of pressure inside proton:

[beecee]

https://phys.org/news/2018-05-subatomic-particle-mechanical-property-reveals.html

First measurement of subatomic particle's mechanical property reveals distribution of pressure inside proton

May 16, 2018, Thomas Jefferson National Accelerator Facility:

"Nuclear physicists have found that the proton's building blocks, the quarks, are subjected to a pressure of 100 decillion Pascal (1035) near the center of a proton, which is about 10 times greater than the pressure in the heart of a neutron star. Credit: DOE's Jefferson Lab"

Inside every proton in every atom in the universe is a pressure cooker environment that surpasses the atom-crushing heart of a neutron star. That's according to the first measurement of a mechanical property of subatomic particles, the pressure distribution inside the proton, which was carried out by scientists at the Department of Energy's Thomas Jefferson National Accelerator Facility.
 

The nuclear physicists found that the proton's building blocks, the quarks, are subjected to a pressure of 100 decillion Pascal (1035) near the center of a proton, which is about 10 times greater than the pressure in the heart of a neutron star. The result was recently published in the journal Nature.

"We found an extremely high outward-directed pressure from the center of the proton, and a much lower and more extended inward-directed pressure near the proton's periphery," explains Volker Burkert, Jefferson Lab Hall B Leader and a co-author on the paper.

Burkert says that the distribution of pressure inside the proton is dictated by the strong force, the force that binds three quarks together to make a proton.

Read more at: https://phys.org/news/2018-05-subatomic-particle-mechanical-property-reveals.html#jCp

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the paper:

https://www.nature.com/articles/s41586-018-0060-z

The pressure distribution inside the proton:

Abstract:

The proton, one of the components of atomic nuclei, is composed of fundamental particles called quarks and gluons. Gluons are the carriers of the force that binds quarks together, and free quarks are never found in isolation—that is, they are confined within the composite particles in which they reside. The origin of quark confinement is one of the most important questions in modern particle and nuclear physics because confinement is at the core of what makes the proton a stable particle and thus provides stability to the Universe. The internal quark structure of the proton is revealed by deeply virtual Compton scattering1,2, a process in which electrons are scattered off quarks inside the protons, which  subsequently emit high-energy photons, which are detected in coincidence with the scattered electrons and recoil protons. Here we report a measurement of the pressure distribution experienced by the quarks in the proton. We find a strong repulsive pressure near the centre of the proton (up to 0.6 femtometres) and a binding pressure at greater distances. The average peak pressure near the centre is about 1035 pascals, which exceeds the pressure estimated for the most densely packed known objects in the Universe, neutron stars3. This work opens up a new area of research on the fundamental gravitational properties of protons, neutrons and nuclei, which can provide access to their physical radii, the internal shear forces acting on the quarks and their pressure distributions.

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Question....

Does the above say anything about or throw any light on the subject in the following thread, re gravity overcoming all forces inside a BH, and as matter approaches the singularity region?

here....https://www.scienceforums.net/topic/114754-surviving-in-a-black-hole/ This also dictates that gravity at extreme levels will overcome all other forces. The high pressures that exhibit themselves as gravity increases, are also responsible for EDP and NDP......Obviously the gravity resulting from a BH even overcomes NDP: Cannot we then reasonably assume that even the strong force is overcome near or at the singularity? GR also tells us that once the Schwarzchild radius is reached, further collapse "is compulsory" which afterall is the defining aspect of a BH under GR.

 

 

 

 

 

 

Edited May 16, 2018 by beecee

[druS]

beecee

This force, I couldn't follow where it is. Between the quarks, or inside the quarks?

[beecee]

1 hour ago, druS said:

beecee

This force, I couldn't follow where it is. Between the quarks, or inside the quarks?

From the article and paper, the strong nuclear force and gluons that transmit that force.