# Non-central nature of nuclear force?

Nuclear forces are said to be non-central. By definiton of central force, angular momentum is constant. It is usually found in spherical bodies. How do the electric quadruple moments indicate the non-spherical structure of the nucleus? How is the nucleus stable if the angular momentum is not constant?

Hello? Can someone help me here?

Reshma said:
How do the electric quadruple moments indicate the non-spherical structure of the nucleus?
Based upon the sign of the electric quadrupolemoment, you know the shape of the charge distribution around the nucleus. It kind of expresses the electrical dipole you have because of a non-sferical structure (like oblate/prolate-ellipsoids)

marlon

Haelfix
Take classical Yukawa theory, and expand it. Its pretty clear that its not a central potential.

reilly
Haelfix -- not for the usual scalar interation often used to explain the Yukawa potential. For nucleons and pions. The interaction includes "gamma5". Pions have negative parity, the gamma5 allows parity to be conserved, and provides a spin-dependent interaction.
Regards,
Reilly Atkinson

Haelfix