In terms of the total mass " M ", the nuclear mass " m ", the density ?, and a fudge factor " f " which takes into account geometrical and other effects, criticality corresponds to
12.
He also realized the great possibilities of storage-ring based mass spectrometry and supported the very successful efforts at GSI . As described, J�rgen is probably best known for the development of ion-storage devices and methods for accurate measurements of nuclear masses.
13.
The combination of this practical point with the theoretical relation " E " = " mc " 2 makes units of mega electron volts over the speed of light squared ( MeV / " c " 2 ) a convenient form to express nuclear mass.
14.
However, the numerical values of nuclear masses in MeV / " c " 2 are quite large ( even the proton mass is ~ 938.27 MeV / c 2 ), while mass excesses range in the tens of MeV / " c " 2.
15.
Because of electron-nuclear mass differences, the magnetic moment of an electron is substantially larger than the corresponding quantity for any nucleus, so that a much higher electromagnetic frequency is needed to bring about a spin resonance with an electron than with a nucleus, at identical magnetic field strengths.
16.
Nuclear potentials can be " local " or " global " : local potentials are limited to a narrow energy range and / or a narrow nuclear mass range, while global potentials, which have more parameters and are usually less accurate, are functions of the energy and the nuclear mass and can therefore be used in a wider range of applications.
17.
Nuclear potentials can be " local " or " global " : local potentials are limited to a narrow energy range and / or a narrow nuclear mass range, while global potentials, which have more parameters and are usually less accurate, are functions of the energy and the nuclear mass and can therefore be used in a wider range of applications.
