β Scribed by Chi-Kung Ni; Elisabeth A. Wade; Michael V. Ashikhmin; C.Bradley Moore
No coin nor oath required. For personal study only.
The infrared spectra of the n 2 / n 3 and n 2 / n 4 bands of ketene, from 3526 to 3538 cm 01 and from 3257 to 3277 cm 01 , respectively, have been obtained using an IR-UV double resonance photolysis scheme. A tunable IR laser pulse is followed by a UV photolysis pulse. When both an IR and a UV photon are absorbed, the LIF signal of the methylene (CH 2 ) photofragment is observed, following a third laser pulse. Due to the 4 K temperature of ketene in a free jet, the spectrum of n 2 / n 3 is very simple. All the lines observed, J Β£ 5, K a Γ 0, 1, K c Β£ 5, can easily be assigned. The spectrum of n 2 / n 4 is complicated by two overlapping bands, identified as n 2 / n 5 / n 6 and 2n 5 / 2n 6 / 2n 9 . The spectroscopic constants derived are compared to the results of ab initio calculation.
π SIMILAR VOLUMES
## Abstract A general comprehensive model of the twoβstep photodissociation method of isotope enrichment for diatomic reactants was constructed. The model includes kinetic and absorption processes, isotopic species, and temperature. Criteria to measure different aspects of enrichment were establish
Quantum yields for the loss of disilane and the formation of silane in the 193 nm photodissociation of disilane have been measured using time-resolved infrared diode laser absorption spectroscopy under single excimer laser pulse conditions at total pressures of 5 to 10 Torr in helium buffer gas. The