A chemically pumped iodine-atom laser is described based on electronic energy transfer to atomic iodine from chemically generated O2(1Δ). The total extracted power (10 W) is approximately 3% of the power contained in the O2(1Δ) flow.
The results of a study on improved methods for generating O2(1Δ) are presented. A wetted-column reactor utilizing C12 and a mixed H2O2-NaOH solution as reactants was found to produce 70–80 mmole/s of O2, [50% as O2(1Δ)], with a C12 input of 90–100 mmole/s.
A cw CO chemical laser has been operated with CS produced externally by a microwave discharge. Use of CS as a laser fuel produces large increases in output power, as compared with CS2, by a factor of 5.6 or more. The reasons for this power enhancement and the details of the experiment are discussed in this letter.
The reactivity of Cl2 with aqueous H2O2, both with and without added base, was investigated in a static bulb. The rate data for Cl2 absorption in these solutions are explained in terms of a diffusion-reaction model, and the results are consistent with the assumption that the reaction responsible for O2(1D) production in the O2(1D) generator utilized in the chemically pumped iodine laser is a direct reaction between Cl2 and HO−2 at the generator gas-liquid interface. The data indicate that the probability of loss of a Cl2 molecule that strikes the alkaline H2O2 gas-liquid interface is ∼10−2. The solubility of Cl2 in H2O2-H2O mixtures as well as implications of the experiment for practical O2(1D) generators are discussed.
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