EXPLOSIVE ABSORPTION EFFECT OF POWER CO2 LASER BEAM IN ATMOSPHERE

The interaction of a wide beam of intense 10.6 µm and 9.4 µm laser radiation with atmospheric CO2 is studied. The threshold spectroscopic effect of explosive absorption have been obtained. In this effect the absorption coefficient of the atmosphere increases sharply owing to strong self-heating ([MATH] 700-1000 K) of the beam channel

Period of transition - proliferation hazards in the CIS

The booklet contains four papers of Russian authors with the titles: Nuclear non-proliferation in a rapidly changing world (Shmelev, V.M.); Toward a nuclear-weapons-free world (Rodionov, S.N.); The former Soviet Union; Non-proliferation challenges in the period of transition (Bukharin, O.); Some problems of nuclear weapons reduction control (Shmelev, V.M.). (HP)Available from TIB Hannover / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman

Hydrolysis of element (White) phosphorus under the action of heterometallic cubane-type cluster {mo<inf>3</inf>pds<inf>4</inf>}

Reaction of heterometallic cubane-type cluster complexes—[Mo3{Pd(dba)}S4Cl3(dbbpy)3]PF6, [Mo3{Pd(tu)}S4Cl3(dbbpy)3]Cl and [Mo3{Pd(dba)}S4(acac)3(py)3]PF6, where dba—dibenzylideneacetone, dbbpy—4,4′-di-tert-butyl-2,2′-bipyridine, tu—thiourea, acac—acetylacetonate, py—pyridine, with white phosphorus (P4 ) in the presence of water leads to the formation of phosphorous acid H3PO3 as the major product. The crucial role of the Pd atom in the cluster core {Mo3PdS4 } has been established in the hydrolytic activation of P4 molecule. The main intermediate of the process, the cluster complex [Mo3 {PdP(OH)3 }S4Cl3 (dbbpy)3 ]+ with coordinated P(OH)3 molecule and phosphine PH3, have been detected by31P NMR spectroscopy in the reaction mixture