title: [Fluorescence spectrum of cesium vapor resonantly excited by the 852.3 nm laser line].
abstract: The fluorescence spectrum of cesium vapor was studied in a cell irradiated with the light of 852.3 nm resonance line from a single mode laser diode. From the intensities and spectra of the Cs and Cs2 fluorescence we identified several collisional and radiative processes in the excited cesium atom-dimer system. The atomic lines of the highly excited states were the result of collisional energy transfer from Cs(6P 3/2) + Cs(6P 3/2) to Cs(6D, 8S) atoms. The Cs2 (B 1 IIu) band formed in Cs (6P) + Cs2 (X1sigmag+) collisions. The fine-structure mixing in 6 2P atoms was studied through excitation transfer, energy-pooling collision, and collisional excitation transfer between Cs2 and Cs. The authors estimated the value of rate coefficient for the collisional energy transfer from 6P3/2 to 6P1/2 to be (5.2+/-2.1) x 10(-11) cm3 x s(-1). For the excitation transfer process Cs2 (B 1 IIu)+ Cs(6S)--> Cs2 (X 1sigmag+) + Cs(6P1/2 ), a rate coefficient of (1.0+/-0.4) x 10(-9) cm3 x s(-1) was yielded.
authors.affiliation: Department of Physics, Xinjiang University, Urumqi 830046, China.
authors.forename: Yuan-Yuan
authors.initials: YY
authors.lastname: Li
authors.forename: Gui-Qin
authors.initials: GQ
authors.lastname: Yin
authors.forename: Kang
authors.initials: K
authors.lastname: Dai
authors.forename: Yi-Fan
authors.initials: YF
authors.lastname: Shen
mesh_terms: D000465:Algorithms; D002586:Cesium / Q000737:chemistry*; D004735:Energy Transfer; D007700:Kinetics; D007834:Lasers; D012542:Scattering, Radiation; D013050:Spectrometry, Fluorescence / Q000295:instrumentation / Q000379:methods*; D014835:Volatilization
chemical_list: D002586:Cesium