How many O 2 (Δ 1) molecules are consumed per dissociated I 2 in chemical oxygen-iodine lasers? Academic Article uri icon


  • Direct measurements of the dissociation of I 2 molecules at the optical axis of a supersonic chemical oxygen-iodine laser (COIL) as a function of I 2 flow rate were carried out. This enabled us to determine the number of consumed O 2 (Δ 1) molecules per dissociated I 2 molecule. The number depends on the experimental conditions: it is 4.2±0.4 for typical conditions and I 2 densities applied for the operation of the COIL, but increases at lower I 2 densities. Possible dissociation mechanisms consistent with our results are discussed and the importance of dissociating I 2 prior to its mixing with O 2 (Δ 1) is stressed.

publication date

  • January 1, 2006