Accession Number : AD0622738

Title :   THE LIFETIME OF THE A.3&U(+) STATE OF N2,

Corporate Author : CANTERBURY UNIV CHRISTCHURCH (NEW ZEALAND) DEPT OF CHEMISTRY

Personal Author(s) : Phillips,L. F.

Report Date : 14 SEP 1964

Pagination or Media Count : 6

Abstract : The decay of the blue emission from the active nitrogeniodine flame has been measured at iodine pressures down to 0.00014 torr. Extrapolation of the decay rate to zero iodine, pressure yields a value of 0.89=0.41/s for the first-order rate constant in absence of iodine, corresponding to a mean lifetime of 1.1s for the A.3&u(+) state of N2. The rate constants for the reactions N + I2 (yields) NI + I and N2(3&u(+))+I2 (yields) N2(1&G(+)) + I2* are (2.6 = 0.3) X 10 to the -14 power exp (-68 = 34/RT) and (8.3 = 1.2) X 10 to the -14 power cu cm/ molecule/s respectively. (Author)

Descriptors :   (*NITROGEN, ATOMIC ENERGY LEVELS), (*ATOMIC ENERGY LEVELS, RELAXATION TIME), FLAMES, EMISSIVITY, IODINE, REACTION KINETICS, EXCITATION, NEW ZEALAND

Distribution Statement : APPROVED FOR PUBLIC RELEASE