26 4, 2011 535.343.2 KCl:Li. . , . . KCl:Li c FA(II), . . . PACS: 61.72.jn : , , , , . FA(II)- KCl:Li (2,75—2,95 ; , [3], — - ), 500 496 - , [3] U- ) [3] K°—Li°. – - . 211—216 [4—6]. - – . KCl:OH . ., 2011 2010 . [17], - F- - . - KCl:Li , . 23 — — FA(II). , 664033, . , . , 130 . . (395-2) 51-21-60. E-mail: baikal@ilph.irk.ru , . , 664003, . , , 20. . (395-2) 33-21-54. E-mail: penzina@api.isu.ru - , KCl FA(II)- , , - [9—11]. [5, 12—16] - , U- , . . , . 275 , . , . . — ¯, . ., [7, 8] - , . [7, 8] KCl:Li (1 . %), 90 . FA(II)[7], 496 470 K . FA(II)- - , [1, 2]. ( - . , . 500 , [7, 8]. KCl:Li (1 , . %) - 27 4, 2011 F- - F2 [7, 8] . + , O2-Va+ F- 0,1 2 Li , . – Ha , . - F- [19—22]. –1 , . % LiCl. Bruker Vertex 70 Bruker IFS 125 HR Elmer Lambda 35 2 . ( 4,2 K. UV VIS Perkin - . . 890 K. , . 1. KCl:Li (1 ) ( 1) 2 820 K : –1 820 2) , 720, 770 ; ( . %), - 720 . ) 3400—3800 , 4,2 . , 500 ( , - . 1, 1). 820 U215 F565 ( 2). U, 4,2 K, 501,4 -1, -1 [18], 2,17 . , , , 500 ( ) 4,2—300 , . .2 720 , . , U- , ( 212 522 215 -1 Ha– ), . ( ( U252 ( , . 2. KCl:Li (1 ( 1) ( 2 252 2), 1). - , OHa– – OHa + F – – Ha + Oa , 175, 215, 285 , , U, 5 , O2-Va+, . ) ( 720 K 2 2). , . %), . [3], - F: – Oa + F O2-Va+. (78 K) [12]. 252 215 , , 439,7 ( , 439,7 28 4, 2011 285 ). [23], ) 302 K2O [12]. , ( 680 K KCl:OH (1 %) — ( K2O , 1). ( , 710—720 , ( 2). . , : - ( 1 . 1), ( 2) ) - ( ( 3- 2- 3). U574 FA(II)x, y ). ( 462 502 3) , 600 . 462 , , O2-Va+, 3 - , . , ( . z) 3, - 600 . . 3, , . 2 . - . 3 KCl:Li (1 . %), 1, . . , ( 622 - 250 , , , 600—620 K2O ) LiF. , [25] LiF , , 525 . [26] ( 0 5 , 470 ). , –1 462, 487, 515 - . LiF 212 , 10 ( . : KCl:Li (1 1), 770 K ) LiF—Li 462 574 622 . 3. 60 20 40 . %), — , LiF:OH 490 , 2) ( — 480 560 . 3) , [27] . , , , , , F- . [9—11], 730 , . . , , KCL:Li. . [24], - 462 , K°—Li° , - 29 4, 2011 . FA(II)F2- . [31] , . – , , – O2-Va+ , 204 – + O2 Va+ , OH¯ + 2F. 0,74, . . U. 500 KCl:Li, . [7] 496 200 1,5 . - 0,102 [28], – 215 , , - , FA(II)- . - , , , , , - . U. , U- [1], LiH+ [29]. LiH - . Cl2 : LiH + Cl2 = LiCl + HCl (400—450 . ). - , [30] , , . . Li+ U- Cl . KCl:Li , . 600 - FA(II)462 , , (5—30 ). F- . FA(II), - - 1. Mollenauer L. F., Olson D. H. // J. Appl. Phys. 1975. V. 46. No. 8. P. 3109. 2. . ., . ., . . . // . . 1986. . 13. 8. . 1708. 3 . ., . ., . . // . . 1989. . 66. 4. . 927. 4. Delbecq C. J., Smaller B., Yuster P. N. // Phys. Rev. V. 104. No. 3. P. 599. 5. Etzel H. W., Patterson D. A. // Ibid. 1958. V. 112. No. 4. P. 1112. 6. Martienssen W. // Z. Phys. 1952. V. 131. No. 4. P. 488. 7. Okada T. // J. Phys. Soc. J n. 2006. V. 75. No. 9. P. 094705. 8. Okada T. // Phys. Stat. Sol. (c). 2007. V. 4. No. 3. P. 723. 9. Compton W. D. // Phys. Rev. 1957. V. 107. No. 5. P. 1271. 10. Doyle W.// Proc. Phys. Soc. 1960. V. 75. No. 5. P. 649. 11. Chinnusamy M., Ramasamy S., Nagarajan T., Murti Y. V. G. S. // J. Phys. C: Solid State Phys. 1983. V. 16. No. 1. P. 77. 12. 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P. 1703. 26. . . // . 1969. . 11. 7. . 1829. 30 4, 2011 27. . ., . . // . 1970. . 12. 2. . 343. 28. Rühenbeck C. // Z. Phys. 1967. V. 207. No. 5. P. 446. 29. Joosen W., Zhou J. F., Goovaerts E., Schoemaker D. // Phys. Rev. B. 1985. V. 31. No. 10. P. 6709. 30. Dubinko V. I., Vainshtain D. I., Hartog H. W. // Nuclear Instruments and Methods in Physics Research. 2005. V. B 228. No. 1—4. P. 304. 31. Baldachini G., Grassano U. M., Scasso A., Somma F. // Physica Scripta. 1988. V. 37. No. 3. P. 381. Degradation mechanism of a laser media on the base of the KCl:Li-crystals L. I. Bryukvina Irkutsk Division of the Institute of Laser Physics, 130A Lermontova str., Irkutsk, 664033, Russia E-mail: baikal@ilph.irk.ru E. E. Penzina Irkutsk State University, 20 Gagarin Blvd., Irkutsk, 664003, Russia E-mail: penzina@api.isu.ru The degradation mechanism of a laser-active media on the base of the KCl:Li-crystals with FA(II) color centers during different stages of annealing has been studied. It is demonstrated that the lithium colloids and quasi-metal potassium centers are appeared at first stages of annealing. In the process of prolonged annealing, the mixed K—Li colloids are created and predominated n the crystals. PACS: 61.72.jn Keywords: alkali-halide crystals, additive coloration, thermal annealing of crystals, lasers on color centers, thermal degradation of a laser media. Bibliography — 31 references. Received September 23, 2010