Authors: Ting-Hang Pei
We discuss the stability problem of the atomic pair in the 3He superfluid. It is similar to the bound-state problem of the hydrogen molecule because both of them are composed of two spin-1/2 nuclei. The difference is the cause for bonding. What is of interest here is whether the nuclear spin coupling between two 3He nuclei is large enough to form a stable atomic pair in the superfluid. According to our calculations, the energy difference between the excited state F=1 and the ground state F=0 caused by the nuclear spin coupling of the two hydrogen nuclei is about 5.6x10^-9 eV when the intermolecular distance is 0.74 Å. When the two 3He nuclei are separated by 2.9 Å, the same energy difference caused by the nuclear spin coupling is 4.8x10^-10 eV. This value is much less than the binding energy of two 3He atoms about 1.0 eV, and is also much smaller than the Lennard-Jones potential of 8.74x10^-4 eV between the two helium atoms. Therefore, two 3He atoms cannot form a stable atomic pair due to the nuclear spin coupling even the spin wave.
Comments: 3 Pages.
[v1] 2019-07-12 08:15:21
Unique-IP document downloads: 13 times
Vixra.org is a pre-print repository rather than a journal. Articles hosted may not yet have been verified by peer-review and should be treated as preliminary. In particular, anything that appears to include financial or legal advice or proposed medical treatments should be treated with due caution. Vixra.org will not be responsible for any consequences of actions that result from any form of use of any documents on this website.
Add your own feedback and questions here:
You are equally welcome to be positive or negative about any paper but please be polite. If you are being critical you must mention at least one specific error, otherwise your comment will be deleted as unhelpful.