Vol. 34, issue 08, article # 10

Gerasimov V. V. Method for determining cross sections of excitation transfer in collisions with atoms of rare-earth metals. 1. Description of the method. // Optika Atmosfery i Okeana. 2021. V. 34. No. 08. P. 638–646. DOI: 10.15372/AOO20210810.
Copy the reference to clipboard
Abstract:

A method for estimating cross sections of excitation transfer in collisions with atoms of rare-earth metals (REM) is presented. The cases of excitation transfer in collisions of REM atoms in unscreened resonant states 6s6p with REM atoms in the ground state, as well as REM atoms in screened resonant states 5d6s2 with inert gas atoms are considered. The determination of the cross sections is based on the fact of collisional population of the upper laser levels from close-lying resonant levels excited by electron impact in REM vapor lasers. The quantities required for calculating the cross sections are determined from the active laser medium parameters and average lasing power. The advantages and disadvantages of the method suggested in comparison with methods based on optical excitation of metal atoms and recording non-resonant fluorescence are discussed.

Keywords:

collisional excitation transfer, cross section, rare-earth metal, metal vapor laser

References:

  1. Petrash G.G. Stolknovitel'nye lazery na atomnyh perekhodah // Kvant. elektron. 2009. V. 39, N 2. P. 111–124.
  2. Krause L. Collisional excitation transfer between the 2P1/2 and 2P3/2 levels in alkali atoms // Appl. Opt. 1966. V. 5, N 9. P. 1375–1382.
  3. Pitre J., Krause L. Sensitized fluorescence in vapors of alkali metals: IX. Energy transfer in collisions between sodium and inert gas atoms // Can. J. Phys. 1967. V. 45, N 8. P. 2671–2681.
  4. Reid R.H.G, Dalgarno A. Fine-structure transitions and shape resonances // Phys. Rev. Lett. 1969. V. 22, N 20. P. 1029–1030.
  5. Münster P., Marek J. Determination of cross sections of excitation transfer between the fine-structure components of Cs (72P), Rb (62P) and Rb (72P) induced by collisions with rare-gas atoms // J. Phys. B: Atom. Mol. Phys. 1981. V. 14, N 6. P. 1009–1018.
  6. Huennekens L., Gallagher A. Self-broadening of the sodium resonance lines and excitation transfer between the 3P3/2 and 3P1/2 levels // Phys. Rev. A. 1983. V. 27, N 4. P. 1851–1864.
  7. DeVries P.L. A quantum calculation of multipole relaxation and transfer cross sections in collisions of Na with Xe // J. Chem. Phys. 1984. V. 80, N 1. P. 186–194.
  8. Sharma A.D., Schuessler H.A., Hill, Jr. R.H. Laser-induced-fluorescence detection of collisional excitation transfer in atomic rubidium vapor during collisions with noble-gas and rubidium atoms // Phys. Rev. A. 1988. V. 37, N 12. P. 4649–4655.
  9. Konefal Z., Ignaciuk M.Z. Observation of collision-induced amplified emission in Na-noble gas system // Phys. D – Atoms, Molecules and Clusters. 1993. V. 27, N 1. P. 49–54.
  10. Sensibilizirovannaya fluorestsentsiya smesej parov metallov: sb. 1 / pod red. E.K. Kraulini. Riga: Izd-vo Latvijskogo gosuniversiteta, 1968. 132 p.
  11. Sensibilizirovannaya fluorestsentsiya smesej parov metallov: sb. 2 / pod red. E.K. Kraulini. Riga: Izd-vo Latvijskogo gosuniversiteta, 1969. 154 p.
  12. Stolknovitel'nye i radiatsionnye protsessy s uchastiem vozbuzhdennyh chastits: Sb. nauchn. trud. / pod red. E.K. Kraulini. Riga: Izd-vo Latvijskogo gosuniversiteta, 1987. 168 p.
  13. Gerasimov V.A., Gerasimov V.V., Pavlinskiy A.V. Peculiarities of collisional excitation transfer with excited screened energy levels of atoms // Phys. Rev. A. 2007. V. 76, N 3. P. 034701.
  14. Aleksandrov E.B., Vedenin V.D., Kulyasov V.N. Ushirenie i sdvig rezonansnyh linij tuliya geliem // Opt. i spektroskop. 1984. V. 56, N 4. P. 596–600.
  15. Vedenin V.D., Kulyasov V.N. Stolknovitel'nye vozmushcheniya fd-perekhodov v atomah samariya i tuliya // Opt. i spektroskop. 1985. V. 59, N 5. P. 1004–1007.
  16. Vedenin V.D. Ushirenie i sdvig kriptonom rezonansnyh linij tuliya i samariya // Opt. i spektroskop. 1987. V. 63, N 6. P. 1198–1201.
  17. Vedenin V.D. Ushirenie i sdvig atomnyh linij tuliya i samariya // Opt. i spektroskop. 1991. V. 70, N 5. P. 956–962.
  18. Martin W.C., Zalubas R., Hagan L. Atomic energy levels – the rare-earth elements // Natl. Stand. Ref. Data Ser. (U.S., Natl. Bur. Stand.). 1978. V. 60. 422 p.
  19. Aleksandrov E.B., Popov V.I., Prilipko V.K., Hryashchev L.Yu. Secheniya perekhodov mezhdu vozbuzhdennymi sostoyaniyami Tm pri stolknoveniyah s atomami Ne i Xe // Opt. i spektroskop. 1986. V. 60, N 5. P. 881–882.
  20. Cahuzac Ph. Emissions laser infrarouges dans les vapeurs de thulium et d'ytterbium // Phys. Lett. A. 1968. V. 27, N 8. P. 473–474.
  21. Cahuzac Ph. Emissions laser infrarouges dans les vapeurs de terres rares // Phys. Lett. A. 1970. V. 31, N 10. P. 541–542.
  22. Gerasimov V.A. Gazorazryadnyj impul'snyj lazer na parah gol'miya // Opt. i spektroskop. 1999. V. 87, N 1. P. 156–158.
  23. Gerasimov V.A., Starkova L.N. Generatsiya impul'snogo lazernogo izlucheniya v parah disproziya // Opt. i spektroskop. 2002. V. 92, N 2. P. 335–337.
  24. Gerasimov V.A., Pavlinskij A.V. Generatsiya lazernogo izlucheniya na atomarnom perekhode erbiya v smesi Er + Tm + He // Pis'ma v ZhTF. 2003. V. 29, N 23. P. 51–55.
  25. Klimkin V.M. Issledovanie gazovogo lazera na parah itterbiya // Kvant. elektron. 1975. V. 2, N 3. P. 579–584.
  26. Klimkin V.M., Prokop'ev V.E., Sokovikov V.G. Issledovanie zavisimosti moshchnosti generatsii na IK-liniyah itterbiya ot chastoty sledovaniya impul'sov nakachki // Kvant. elektron. 1981. V. 8, N 4. P. 722–725.
  27. Gerasimov V.A., Yunzhakov B.P. Issledovanie lazera na parah tuliya // Kvant. elektron. 1989. V. 16, N 12. P. 2386–2393.
  28. Gerasimov V.A. Metal vapor lasers with indirect excitation of upper laser levels via intermediate states // Proc. SPIE. International Conference on Atomic and Molecular Pulsed Lasers II. 1998. V. 3403. P. 165–174.
  29. Gerasimov V.A., Gerasimov V.V., Pavlinskij A.V. Optimal'nye chastoty sledovaniya impul'sov vozbuzhdeniya v lazere na parah tuliya // Kvant. elektronika. 2011. V. 41, N 1. P. 8–12.
  30. Gerasimov V.A., Gerasimov V.V. Cross sections of collisional excitation transfer in collisions of rare-earth metal atoms in screened excited states with atoms of inert gases // J. Phys. B. 2011. V. 44, N 19. P. 195201.
  31. Frish S.E. Opticheskie spektry atomov. M.; L.: Gos. izd-vo fiz.-mat. lit., 1963. 640 p.
  32. Soshnikov V.N. Funktsiya raspredeleniya elektronov, naselennost' i skorost' ionizatsii v plazme impul'snogo razryada v parah medi, soderzhashchih neon // ZhTF. 1977. V. 47, N 7. P. 1501–1505.
  33. Gerasimov V.A., Starkova L.N. Usloviya effektivnoj raboty lazerov na parah metallov s kosvennym vozbuzhdeniem verhnih lazernyh urovnej // Optika atmosf. i okeana. 2000. V. 13, N 3. P. 250–253; Gerasimov V.A., Starkova L.N. Conditions for efficient operation of metal-vapor lasers with indirect excitation of the upper lasing levels // Atmos. Ocean. Opt. 2000. V. 13, N 3. P. 227–229.
  34. Pavlinskij A.V. Issledovanie lazerov s kosvennym vozbuzhdeniem verhnih lazernyh urovnej: diss. ... kand. fiz.-mat. nauk. Institut optiki atmosfery SO RAN. Tomsk, 2003. 115 p.
  35. Smirnov Yu.M. Electron-impact excitation of UV lines of DyI // Phys. Scripta. 1994. V. 49, N 6. P. 689–695.
  36. Smirnov Yu.M. Excitation of dysprosium atom levels belonging to even 4f96s26p and 4f106p2 configurations // Eur. Phys. J. D. 2015. V. 69, N 1. P. 15.
  37. Smirnov Yu.M. Excitation of 6snp levels of dysprosium atom by electron impact (n = 6, 7) // J. Phys. B. 2019. V. 52, N 2. P. 025205.
  38. Smirnov Yu.M. Vozbuzhdenie perekhodov atomov tuliya, okanchivayushchihsya na urovnyah 4f12(3H)5d6s2 (6, 3/2) // Opt. i spektroskop. 2008. V. 104, N 5. P. 760–765.
  39. Smirnov Yu.M. Secheniya vozbuzhdenie perekhodov atoma tuliya, okanchivayushchihsya na urovnyah 4f13(2F°)6s6p(3P°) (7/2, J2) с J2 = 0, 1 // Opt. i spektroskop. 2010. V. 109, N 3. P. 366–371.
  40. Smirnov Yu.M. Vozbuzhdenie rezonansnyh perekhodov atoma tuliya medlennymi elektronami // Opt. i spektroskop. 2003. V. 95, N 6. P. 938–944.
  41. Gerasimov V.V. Metod opredeleniya sechenij peredachi vozbuzhdeniya v stolknoveniyah s atomami redkozemel'nyh metallov. 2. Primenenie metoda // Optika atmosfery i okeana. 2021. V. 34, N 8. P. 647–660.
  42. Vajnshtejn L.A., Sobel'man I.I., Yukov E.A. Vozbuzhdenie atomov i ushirenie spektral'nyh linij. M.: Nauka, 1979. 320 p.
  43. Carman R.J., Brown D.J.W., Piper J.A. A self-consistent model for the discharge kinetics in a high-repetition-rate copper-vapor laser // IEEE J. Quantum Electron. 1994. V. 30, N 8. P. 1876–1895.
  44. Deshman S. Nauchnye osnovy vakuumnoj tekhniki. M.: Mir, 1964. 716 p.
  45. Gerasimov V.A., Gerasimov V.V., Pavlinskiy A.V. Temperature range and conditions of stable operation of gasdischarge rare-earth metal vapor lasers // Appl. Phys. B. 2008. V. 92, N 2. P. 225–227.
  46. Klimkin V.M. Metallizatsiya kyuvet v impul'sno-periodicheskih lazerah. Prichiny i sledstviya // Optika atmosfery i okeana. 2000. V. 13, N 12. P. 1103–1106; Klimkin V.M. Metallization of cells in pulsed lasers. Causes and effects // Atmos. Ocean. Opt. 2000. V. 13, N 12. P. 1020–1023.