Polarization of the ion atmosphere of a charged cylinder.
The dipole moment is calculated for an electric-field-induced polarization of a Debye-Hückel ion atmosphere surrounding a charged rod. If L is the length of a thin rod. Q is its linear charge density, Z is charge of the salt ion in solution, and k is the Debye-Hückel shielding parameter, then for KL less, similar 10, the calculated polarizability is proportional to Z(2)Q(2)L(1.8)/K(1.2). Comparison with experimental data for DNA shows that the ion atmosphere dipole is of the correct magnitude and is consistent with observed variations with Z, Q, L and k.
Rau
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DC
Laboratory of Chemical Physics, National Institute of Arthritis, Metabolism and Digestive Diseases. National Institutes of Health, Bethesda, MD 20205, USA.
Charney
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