| 摘要 |
<p>A resonance ionization imaging device (RIID) and method of imaging objects using the RIID are provided. The RIID system (100) includes a RIID cell (102) containing an ionizable vapor including monoistopic atoms or molecules. The cell is positioned to intercept scattered radiation of a resonance wavelength from the object (10) which is to be detected or imaged. Laser sources (116, 118) are disposed to illuminate the RIID cell with laser radiation of wavelengths selected to ionize atoms in the cell that are in an excited state by virtue of having absorbed the scattered resonance laser radiation. A luminescent screen (120) at the back surface of the RIID cell presents an image of the number and position of charged particles present in the RIID cell as a result of the ionization of the excited state atoms. The object (10) is initially illuminated with a laser (110) having a wavelength selected such that the object will scatter laser radiation having the resonance wavelength.</p> |
