Parameters of an electric-discharge generator of iodine atoms for a chemical oxygen—iodine laser

Abstract

We study the possibility of extracting geometric information on the shape of the extra dimension from four-dimensional data such as the mass of the Kaluza-Klein (KK) mode. Assuming one compact extra dimension whose geometry can be considered as perturbations in the flat background, we show that if there is a Z 2 symmetry in the extra dimension, for example the KK parity in models with Universal Extra Dimensions, then the warp factor in the metric is completely determined by the KK mass alone. Without KK parity, additional information depending on the boundary conditions is needed to fully reconstruct the metric, even though such information may be experimentally challenging to obtain. The case in a general background geometry is also considered.

Heterogeneous losses of externally generated I atoms for OIL

“…To measure the concentration of I 2 behind the discharge zone in the diagnostic cell we used laser-induced fluorescence (LIF) technique that was described elsewhere 14,34 . Fluorescence was excited by a diode-pumped, frequency-doubled cw WL-LAG532-5 Nd :YAG laser.…”

“…Electric-discharge [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] and chemical [18][19][20] generators have been proposed as a source of iodine atoms for the use in OIL. Dissociation of iodine-containing molecules in electric-discharge plasmas had been proved to be useful for external production of iodine atoms.…”

Recent advances in the development of discharge‐pumped oxygen‐iodine lasers

“…Predissociation of I or an alternative I atom donor using a discharge is a simpler approach, as it does not introduce chemical complications in the lasing medium [4,50,72,[78][79][80][81]. The primary challenge is to minimize I recombination during transport and injection.…”

“…Alternative discharge geometries for production and injection of I atoms are currently under investigation. Mikheyev, Azyazov and co-workers [79,80,85] have constructed a coaxial DC glow discharge where the products are sampled from the side-wall of the outer cylindrical electrode via slit or rake injectors. They have used CH I as the iodine donor for this device.…”

“…Mikheyev et al [86] have demonstrated 100% dissociation of CH I in this system. In tests where the discharge products were injected in to a cold primary flow (room temperature Ar), Azyazov et al [79,80] observed loss of I atoms due to homogeneous recombination. Measurements of downstream I concentrations indicated ratios for in the range of 0.2-0.3.…”