Sticking probability attachment coefficient

Here a is the attachment efficiency or sticking probability discussed previously it reflects the chemical aspects of the aggregation process and is dimensionless. The term 3 is a coefficient that describes the physical or mass-transport aspects of the system typical dimensions are liter seconds per mole. The focus of this section of the chapter is on the physical aspects of aggregation (3). 

With theoretical values of particle transport [ (p, c)theor] available with Eq. 4, experimental values of the attachment coefficient or sticking probability [a(p, c)exp] can be obtained from experimental measurements of particle removal in porous media with the following relationship, obtained by integrating Eq. 1 with boundary conditions that C — CQ at L = 0 and C — CL at L= L ... 

Calculations of particle transport and attachment in the field experiments of Harvey et al. (1989) are presented in Table 3. Theoretical mass-transfer coefficients are calculated with Eq. 4 and experimental sticking probabilities are then calculated with Eq. 5, In making these calculations, a superficiar or approach... 

Alpha in Deposition The sticking coefficient or attachment probability, a, of particles depositing in porous media is defined as follows ... 

In these results the effects of surface and solution chemistry on particle deposition are represented by the sticking coefficient or attachment probability (or), defined in this case as the rate at which particles adhere to a grain of aquifer media divided by the rate at which they contact it. In Figure 11, a is assumed as 1 (perfect sticking) and also as 10-3 (one collision in every 1000... 

In this case, y represents the interfacial energy, is a function of the activity ( ) for foreign substrates, which is different for different substrates. Z is the attachment probability (sticking coefficient) of molecules of the parent phase to the nucleus. Therefore, Z is related to epitaxy. For crystallization in glass, Z is approx. lO". The viscosity of the parent phase is represented by J. The difference between the chemical potentials of the melt and the crystal is represented by p. It is determined by Eq. 1-13. 

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