Accession Number:

ADA127585

Title:

Energy Disposal in Electronically Excited Halogens and Oxygen

Descriptive Note:

Final rept. 1 Nov 1981-31 Oct 1982

Corporate Author:

CORNELL UNIV ITHACA NY DEPT OF CHEMISTRY

Personal Author(s):

Report Date:

1982-10-31

Pagination or Media Count:

9.0

Abstract:

Collisional quenching of electronically excited iodine atoms by molecular oxygen has been investigated. The primary mechanism of the I2P12 deactivation is shown to be an electronic-to-electronic energy transfer process between the iodine and oxygen, creating electronically excited 02 1 delta g. In another experiment the total rate of deactivation of 021 sigma by C02 was found to be 5.0 x 10 to the minus 13th power cc3molecule delta. Electronic-to- vibrational energy transfer from I5 2P12 to I2 25 v less than 43 has been observed. Roughly 2 of the I deactivation result in I2 v40 by argon, helium, and I2 at room temperature are 7.3 or 0.3 x 100,000 sec -1torr, 1.0 or- 0.2 x 1,000,000 6sectorr and 1.8 or- 0.4 x 1,000,000 6sec -1torr, respectively. These results in the chemical implications for the mechanism of I2 dissociation in the chemical oxygeniodine laser. A chain branching mechanism consisting of the steps I I2 yield I I2 yield I I2 20 less than v less than 40, I2 20 less than v less than 40 02 I delta yield 21 02, and 02 1 delta I yield 02 I may be responsible for the dissociation.

Subject Categories:

  • Physical Chemistry
  • Lasers and Masers

Distribution Statement:

APPROVED FOR PUBLIC RELEASE