Resonance Scattering Spectroscopic Study of Colibacillus

The resonance scattering spectra of colibacillus have been studied. It has three resonance scattering peaks at 470 nm, 510 nm and 730 nm. When the excited wavelength λ_ex is at 470 nm(6.38×10¹⁴Hz), the colibacilus solutions exhibit aresonance scattering peak at 470 nm and a 1/2 fraction frequency scattering peak at 940 nm (1/26.38×10¹⁴Hz). A resonance scattering peak at 510 nm was observed as the λ_ex=510 nm. There is a double frequency scattering peak at 365 nm (2×4.11×10¹⁴Hz) and a resonance scattering peak at 730 nm (4.11×10¹⁴Hz) for the λ_ex=730 nm. The fraction frequency peak and the double frequency peak have similar scattering property as the resonance scattering peak. The concentration of colibacillus in the range of 0.074～38×10⁸ cell/mL is proportional to the scattering intensity I₄₇₀、I₅₁₀、I₇₃₀, respectively.