•  
  •  
 

Scientific Journal of Samarkand University

Abstract

In this work it is given studying of dynamics and types of physical processes with excited atoms and molecules in atomizer of "graphite furnace". Physical mechanism of increasing atomic-ionization signal for two stepwise excitation schemes was shown. It is shown that the maximum signal is observed for In atoms at the transition 5p 2 Р3/2→6s 2 S3/2→8p 2 P1/2 and for Li, Na, Ag, Au, Pt atoms at the transition (n)s→(m)p→(k)d respectively (where n, k, m and f principal quantum numbers of states). In the result in the experiment photoionization collisional ionization and mechanisms were developed. The results are show ed that the collisional ionization process is the dominant mechanism. For the first time new parameters of aerosols on physical and chemical properties of aerosol plumes from solid surfaces and aerosols of salt of metals and organic aerosols are revealed.

First Page

27

Last Page

33

References

1. Balykin Victor I. The scientific career of V S Letokhov. Phys. Scr. 2012. V85. –p1- 51. 2. Fedosseev V.N., Kudryavtsev Yu., Mishin V.I. Resonance laser ionization of atoms for nuclear physics. Phys. Scr. 2012. V85. –p1-14. 3. Travis J.C., Turk G.C. Laser-Enhanced Ionization Spectrometry // New York.: John Wiley & Sons Inc. 1996. - 334 p. 4. Winefordner J.D., Gornushkin I.B., Pappas D., Matveev O.I. and Smith B.W. Novel uses of lasers in atomic spectroscopy. Plenary Lecture//J. Anal. Atomic Spectrom. -2000. 15. –P.1161-1189. 5. Giel Berden, Rudy Peeters and Gerard Meijer. Cavity ring-down spectroscopy: Experimental schemes and applications. //Int.Reviews in Physical Chemistry, 2000.Vol.,19,No4. pp.565- 607. 6. Axner O., Rubinsztein-Dunlor H. LEI Spectrometry in flames – a Powerful and Versatile Technique for Ultra-Sensitive Trace Element Analysis// Spectrochim.Acta. - 1989. –V.44B.- P.836-866. 7. Zorov N.B., Kuzyakov Yu.Ya., Novodvorskiy O.A., Chaplygin V.I.. Ximiya plazmy, (Moskva , Energoatomizdat, 1987). 8. Miles, R., Carruthers, A. and Reid, J. (2011), Novel optical techniques for measurements of light extinction, scattering and absorption by single aerosol particles// Laser & Photonics Reviews. -2011. Volume 5, Issue 4, P.534–552, 9. Nasimov A.M., Xalmanov A.T., Tursunov A.T., Chekalin N.V. Zavodskaya laboratoriya. 1995.T.61. №4.S.21-25. 10. Khalmanov A.T., Do-kyong Ko, J.Lee, N.Eshkobilov and A.Tursunov. J.Korean Phys.Soc. 44, 843 (2004). 11. Xalmanov A.T. Jurnal prikladnoy spetroskopii. 67,11 (2000). 12. Xalmanov A.T. Issledovaniye prosessov vozbujdeniya i ionizasii atomov xroma metodom rezonansnoy lazernoy spektroskopii // Uzbekskiy fizicheskiy jurnal. 2011god. Tom.13, - № 1. S.33- 41 13. Xalmanov A.T., Eshkobilov N.B. Identifikasiya ultramalyx konsentrasiy atomov v razlichnyx fazovyx sostoyaniyax veshyestva, Uzbekskiy fizicheskiy jurnal. 2014 god. Tom 16. №2. S.100-105. 14. Xalmanov A.T., Eshkobilov N.B. Issledovaniye dinamiki i tipov fizicheskix prosessov vozbujdeniya i ionizasii atomov metodom atomno-ionizasionnoy spektroskopii,, Uzbekskiy fizicheskiy jurnal. 2017 god. Tom 19. №5. S.272 -277. 15. Xalmanov A.T. Vysokochuvstvitelnaya lazernaya spektroskopiya ultramalyx konsentrasiy atomov v razlichnyx fazovyx sostoyaniyax veshyestva, avtoreferat doktorskoy (DSc) dissertasiipo fiziko-matematicheskim naukam . Tashkent. 2017. «Akademiya noshirlik markazi». S.1-60.

Included in

Physics Commons

Share

COinS