title: [Fine structure branching ratio for K-Ar optical collision].
abstract: An optically thin gaseous mixture of K and low-density Ar is excited by the fixed frequency line 514.5 nm of the argon ion laser. The excited KAr molecule is dissociated into the K 4P1/2 or K 4P3/2. The branching ratio is defined as I(D1)/I(D2) where I(D1) and I(D2) are measured intensities of the atomic K D1 and D2 lines. The branching is determined in the Ar density range between 2 and 8 x 10(17) cm-3. The ratio of the dissociation rates and the fine structure changing cross section are obtained.
authors.affiliation: Department of Physics, Xinjiang University, 830046 Urumqi.
authors.forename: Y
authors.initials: Y
authors.lastname: Shen
authors.forename: W
authors.initials: W
authors.lastname: Li
mesh_terms: D001128:Argon / Q000737:chemistry*; D007834:Lasers; D049449:Luminescence; D008956:Models, Chemical; D010777:Photochemistry; D011188:Potassium / Q000737:chemistry*
chemical_list: D001128:Argon; D011188:Potassium