# packing fraction

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Related to packing fraction: mass defect

## 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.
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References in periodicals archive ?
phi]] was obtained with the Krieger-Dougherty law with a value of 33% for the maximum packing fraction and of 2.
The modeling helps in studying the effects of various parameters such as the grain size, the packing fraction, and the gap between neighbouring metal particles, on the effective constitutive properties of the copper powders at both 2.
When an atom broke down radioactively to another atom, comparative packing fractions reduced the total mass somewhat, and this made a certain amount of kinetic energy available for the emerging alpha particles.
m] denotes maximum volume packing fraction and n=[eta][[PHI].
Consequently, these systems are no longer governed by the maximum packing fraction, [[phi].
The increase in the viscosity may be attributed to the properties of the filler, such as maximum packing fraction .
The ratio of the volume loading level to the maximum packing fraction of the filler is generally employed for correlations with the ratio of the shear viscosity of the suspension over the shear viscosity of the binder-polymer at the same shear rate.
23), who modeled the behavior of glass filled epoxy using a variable packing fraction within densely packed zones.
m] The distance of separation between the particles decreases as the volume fraction of the filler approaches the maximum packing fraction of the filler.
The constant A can be approximately considered as the maximum packing fraction (MPF) of a filler because when [phi] is close to A, the relative viscosity becomes infinite.
Thus, a significantly higher particle packing fraction can be achieved within the viable viscosity range for processing.

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