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Optica Publishing Group
  • Journal of the Optical Society of Korea
  • Vol. 10,
  • Issue 4,
  • pp. 157-161
  • (2006)

Measurements of Photoabsorption Cross Sections of Nitric Oxide by Using Double-Ionization Chamber

Open Access Open Access


A synchrotron light source is useful in the vacuum ultraviolet (VUV) regime for olecular spectroscopy, such as photo absorption, photoionization, and dissociative hotoionization. In this research, we used a double-ion chamber (DIC) to measure hotoabsorption cross sections of a NO molecule in the wavelength range from 90 to 135 nm of 3B1 beam-line of the Pohang synchrotron light source with the resolution of the onochromator being 0.06 nm. The appearance wavelength for ionization was measured to be <TEX>$134.19{\pm}0.09nm$</TEX> that is placed in the middle of the reported values though they don't agree with each other within the relative error limits. The auxiliary experimental works ave been done to test if there are any systematic error sources. The resultant ross-sections agree with previous results in general.

© 2006 Optical Society of Korea

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