释义 |
packing fraction
packing fractionn. The difference between the isotopic mass and the mass number of a nuclide, divided by its mass number, often interpreted as a measure of stability.packing fraction n (Nuclear Physics) a measure of the stability of a nucleus, equal to the difference between its mass in amu and its mass number, divided by the mass number
packing fraction
packing fraction[′pak·iŋ ‚frak·shən] (nuclear physics) The quantity (M - A)/ A, where M is the mass of an atom in atomic mass units and A is its atomic number. |