free molecule

free molecule

[¦frē ′mäl·ə‚kyül]
(physical chemistry)
A molecule, as in a gas, whose properties, such as spectrum and magnetic moment, are not affected by other atoms, ions, and molecules nearby.
References in periodicals archive ?
In the free molecule and continuum regime, [beta]([upsilon], [[[upsilon].sub.1]) are represented separately as
The reconstruction of [psi]([eta]) in the free molecule regime and continuum regime for different moments (m) by cubic spline is shown in Figure 2, where the references are from Lai et al.
Then, coupling with the asymptotic solutions of TEMOM [20] and the theory of self-preserving, the evolution of the PSD due to Brownian coagulation in the free molecule regime and continuum regime and its asymptotic behavior are obtained easily.
The API composition (free molecule, salt or co-crystal), the crystal form (polymorph, pseudo-polymorph or amorphous), crystal morphology (needle, platelet, cube, sphere, rod), crystal size distribution and crystal quality will all affect its solubility, dissolution profile, bioavailability, and drug product and API processability.
Goel will be looking at free molecules that were found to be contained in small vesicles called exosomes.
However, in this case almost all the ammonia molecules are associated (the proportion of free molecules of ammonia is only 1 x [10.sup.-4]).
The work describes that flavonoids complexed with metal ions are more free radical scavengers than the free molecules.
In acetone, acetaldehyde molecules are the least affected and the energy is nearest to that of free molecules, so the reactivity to produce stable radical is the highest.
In the first stage it fills the microscopic hills and valleys in the substrate and attaches to free molecules at the surface.
Thus, they assume the existence of association complexes formed of single molecules linked by hydrogen bonding or by any other strong specific interaction and the nonassociated species or the free molecules of solvents, proposing the association equilibria theory (AE).
When a vacuum pump is turned on, most of the free water molecules striking the pump are removed from the chamber, causing a continual net release of some of the molecules in the films, since now there are fewer free molecules to reenter the films.
One reason may be that the molecules exist as ions, solid grains, or molecules trapped on grains instead of as free molecules. Such modified forms would absorb wavelengths of light different from those absorbed by free molecules.