Jari Likonen

  • Phone+358505539397
1986 …2020

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2007

Plasma wall interaction and its implication in an all tungsten divertor tokamak

Neu, R., Balden, M., Bobkov, V., Dux, R., Gruber, O., Herrmann, A., Kallenbach, A., Kaufmann, M., Maggi, C. F., Maier, H., Müller, H. W., Pütterich, T., Pugno, R., Rohde, V., Sips, A. C. C., Stober, J., Suttrop, W., Angioni, C., Atanasiu, C. V., Becker, W. & 30 others, Behler, K., Behringer, K., Bergmann, A., Bertoncelli, T., Bilato, R., Bottino, A., Brambilla, M., Braun, F., Buhler, A., Chankin, A., Conway, G., Coster, D. P., De Marné, P., Dietrich, S., Dimova, K., Drube, R., Eich, T., Engelhardt, K., Fahrbach, H. U., Fantz, U., Fattorini, L., Fink, J., Fischer, R., Flaws, A., Franzen, P., Fuchs, J. C., Gàl, K., Mũoz, M. G., Gemisic-Adamov, M. & Likonen, J., 14 Nov 2007, In : Plasma Physics and Controlled Fusion. 49, 12B

Research output: Contribution to journalArticleScientificpeer-review

114 Citations (Scopus)

R&D on full tungsten divertor and beryllium wall for JET ITER-like wall project

Hirai, T., Maier, H., Rubel, M., Mertens, P., Neu, R., Gauthier, E., Likonen, J., Lungu, C., Maddaluno, G., Matthews, G. F., Mitteau, R., Neubauer, O., Piazza, G., Philipps, V., Riccardi, B., Ruset, C., Uytdenhouwen, I. & JET-EFDA Contributors, 2007, In : Fusion Engineering and Design. 82, 15-24, p. 1839-1845

Research output: Contribution to journalArticleScientificpeer-review

64 Citations (Scopus)

Structural studies of deposited layers on JET MkII-SRP inner divertor tiles

Likonen, J., Coad, J. P., Vainonen-Ahlgren, E., Renvall, T., Hole, D. E., Rubel, M. & Widdowson, A., 2007, In : Journal of Nuclear Materials. 363-365, p. 190-195

Research output: Contribution to journalArticleScientificpeer-review

30 Citations (Scopus)

The deuterium inventory in ASDEX Upgrade

Mayer, M., Rohde, V., Ramos, G., Vainonen-Ahlgren, E., Likonen, J., Herrmann, A., Neu, R. & Team, ASDEX. U., 2007, In : Nuclear Fusion. 47, 11, p. 1607-1617

Research output: Contribution to journalArticleScientificpeer-review

23 Citations (Scopus)

Tritium distribution measurement of JET Mk IISRP divertor tiles

Tanabe, T., Sugiyama, K., Renvall, T., Likonen, J., Penttinen, L., Vainonen-Ahlgren, E. & Coad, J. P., 2007, In : Journal of Nuclear Materials. 363-365, p. 960-965

Research output: Contribution to journalArticleScientificpeer-review

8 Citations (Scopus)

Tungsten and beryllium armour development for the JET ITER-like wall project

Maier, H., Hirai, T., Rubel, M., Neu, R., Mertens, P., Greuner, H., Hopf, C., Matthews, G. F., Neubauer, O., Piazza, G., Gauthier, E., Likonen, J., Mitteau, R., Maddaluno, G., Riccardi, B., Philipps, V., Ruset, C., Lungu, C. P. & Uytdenhouwen, I., 2007, In : Nuclear Fusion. 47, 3, p. 222-227

Research output: Contribution to journalArticleScientificpeer-review

25 Citations (Scopus)

Tungsten coatings for the JET ITER-like wall project

Maier, H., Neu, R., Greuner, H., Hopf, C., Matthews, G. F., Piazza, G., Hirai, T., Counsell, G., Courtois, X., Mitteau, R., Gauthier, E., Likonen, J., Maddaluno, G., Philipps, V., Riccardi, B. & Ruset, C., 2007, In : Journal of Nuclear Materials. 363-365, p. 1246-1250

Research output: Contribution to journalArticleScientificpeer-review

33 Citations (Scopus)

Tungsten erosion in the outer divertor of JET

Mayer, M., Likonen, J., Coad, J. P., Maier, H., Balden, M., Lindig, S., Vainonen-Ahlgren, E. & Philipps, V., 2007, In : Journal of Nuclear Materials. 363-365, p. 101-106

Research output: Contribution to journalArticleScientificpeer-review

40 Citations (Scopus)
2006

JET contributions to ITER technology issues

Grisolia, C., Rosanvallon, S., Coad, P., Bekris, N., Braet, J., Brennan, D., Brichard, B., Counsell, G., Day, C., Likonen, J., Piazza, G., Poletiko, C., Rubel, M., Semerok, A. & JET-EFDA Contributors, 2006, In : Fusion Engineering and Design. 81, 1-7, p. 149-154 6 p.

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Overview of material re-deposition and fuel retention studies at JET with the Gas Box divertor

Coad, J. P., Likonen, J., Rubel, M., Vainonen-Ahlgren, E., Hole, D. E., Sajavaara, T., Renvall, T., Matthews, G. F. & JET-EFDA Contributors, 2006, In : Nuclear Fusion. 46, 2, p. 350-366 17 p.

Research output: Contribution to journalArticleScientificpeer-review

78 Citations (Scopus)

Photoluminescence and structural properties of GaInNAs/GaAs quantum wells grown by molecular beam epitaxy under different arsenic pressures

Hakkarainen, T., Pavelescu, E-M. & Likonen, J., 2006, In : Physica E: Low-Dimensional Systems and Nanostructures. 32, 1-2, p. 266-269 4 p.

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Quantification of deuterium irradiation induced defect concentrations in tungsten

Ahlgren, T., Heinola, K., Vainonen-Ahlgren, E., Likonen, J. & Keinonen, J., 2006, In : Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms. 249, 1-2, p. 436-439 4 p.

Research output: Contribution to journalArticleScientificpeer-review

9 Citations (Scopus)

Tritium retention in next step devices and the requirements for mitigation and removal techniques

Counsell, G., Coad, P., Grisola, C., Hopf, C., Jacob, W., Kirschner, A., Kreter, A., Krieger, K., Likonen, J., Philipps, V., Roth, J., Rubel, M., Salancon, E., Semerok, A., Tabares, F. L., Widdowson, A. & Contributores, JET-EFDA., 2006, In : Plasma Physics and Controlled Fusion. 48, 12B

Research output: Contribution to journalArticleScientificpeer-review

78 Citations (Scopus)
2005

Beryllium accumulation at the inner divertor of JET

Likonen, J., Vainonen-Ahlgren, E., Coad, J. P., Zilliacus, R., Renvall, T., Hole, D. E., Rubel, M., Arstila, K., Matthews, G. F., Stamp, M. & JET-EFDA Contributors, 2005, In : Journal of Nuclear Materials. 337-339, p. 60 - 64 5 p.

Research output: Contribution to journalArticleScientificpeer-review

25 Citations (Scopus)

Carbon chemical erosion in H-mode discharges in ASDEX Upgrade divertor IIb: Flux dependence and local redeposition

Pugno, R., Krieger, K., Kirschner, A., Kallenbach, A., Coster, D. P., Dux, R., Fantz, U., Likonen, J., Müller, H. W., Neuhauser, J., Rohde, V., Vainonen-Ahlgren, E. & ASDEX Upgrade Team, 2005, In : Journal of Nuclear Materials. 337-339, p. 985 - 989 5 p.

Research output: Contribution to journalArticleScientificpeer-review

18 Citations (Scopus)

Carbon erosion and a:C-H layer formation at ASDEX Upgrade

Rohde, V., Mayer, M., Likonen, J., Neu, R., Pütterich, T., Vainonen-Ahlgren, E. & ASDEX Upgrade Team, 2005, In : Journal of Nuclear Materials. 337-339, p. 847 - 851 5 p.

Research output: Contribution to journalArticleScientificpeer-review

19 Citations (Scopus)

Carbon erosion and deposition on the ASDEX Upgrade divertor tiles

Mayer, M., Rohde, V., Likonen, J., Vainonen-Ahlgren, E., Krieger, K., Gong, X., Chen, J. & ASDEX Upgrade Team, 2005, In : Journal of Nuclear Materials. 337-339, p. 119 - 123 5 p.

Research output: Contribution to journalArticleScientificpeer-review

32 Citations (Scopus)

Diagnostics for studying deposition and erosion processes in JET

Coad, J. P., Esser, H-G., Likonen, J., Mayer, M., Neill, G., Philipps, V., Rubel, M., Vince, J. & JET-EFDA Contributors, 2005, In : Fusion Engineering and Design. 74, 1-4, p. 745 - 749 5 p.

Research output: Contribution to journalArticleScientificpeer-review

22 Citations (Scopus)

Distribution of hydrogen isotopes, carbon and beryllium on in-vessel surfaces in the various JET divertors

Coad, J. P., Rubel, M., Bekris, N., Brennan, D., Hole, D., Likonen, J., Vainonen-Ahlgren, E. & JET-EFDA Contributors, 2005, In : Fusion Science and Technology. 48, 1, p. 551 - 556 6 p.

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)

Effect of growth polarity on vacancy defect and impurity incorporation in dislocation-free GaN

Tuomisto, F., Saarinen, K., Lucznik, B., Grzegory, I., Teisseyre, H., Suski, T., Porowski, S., Hageman, P. R. & Likonen, J., 2005, In : Applied Physics Letters. 86, 3, 3 p., 031915.

Research output: Contribution to journalArticleScientificpeer-review

84 Citations (Scopus)

Fluence effect on ion-implanted As diffusion in relaxed SiGe

Laitinen, P., Räisänen, J., Riihimäki, I., Likonen, J. & Vainonen-Ahlgren, E., 2005, In : Europhysics Letters. 72, 3, p. 416 - 422 7 p.

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Fuel retention in the gas box divertor of JET

Rubel, M., Coad, J. P., Hole, D., Likonen, J., Vainonen-Ahlgren, E. & JET-EFDA Contributors, 2005, In : Fusion Science and Technology. 48, 1, p. 569 - 572 4 p.

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Fuusiolaitteen diverttori - Missä tiede ja teknologia kohtaavat

Kurkisuonio, T. & Likonen, J., 2005, In : ATS Ydintekniikka. 34, 2, p. 13-15

Research output: Contribution to journalArticleProfessional

JET contribution to ITER fuel cycle issues

Grisolia, C., Bekris, N., Likonen, J., Coad, P., Semerok, A., Brennan, D., Piazza, G., Rosanvallon, S. & JET-EFDA Contributors, 2005, In : Fusion Engineering and Design. 75-79, p. 679 - 683 5 p.

Research output: Contribution to journalArticleScientificpeer-review

Low temperature growth GaAs on Ge

Knuuttila, L., Lankinen, A., Likonen, J., Lipsanen, H., Lu, X., McNally, P., Riikonen, J. & Tuomi, T., 2005, In : Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes. 44, 11, p. 7777 - 7784 8 p.

Research output: Contribution to journalArticleScientificpeer-review

26 Citations (Scopus)

Material erosion and migration in tokamaks

Pitts, R. A., Coad, J. P., Coster, D. P., Federici, G., Fundamenski, W., Horacek, J., Krieger, K., Kukushkin, A., Likonen, J., Matthews, G. F., Rubel, M. & Strachan, J. D., 2005, In : Plasma Physics and Controlled Fusion. 47, 12B, p. B303 - B322 20 p.

Research output: Contribution to journalArticleScientificpeer-review

82 Citations (Scopus)

Overview of ASDEX Upgrade results: Development of integrated operating scenarios for ITER

Günter, S., Likonen, J. & et al., 2005, In : Nuclear Fusion. 45, 10, p. S98 - S108 11 p.

Research output: Contribution to journalArticleScientificpeer-review

21 Citations (Scopus)

Studies on 13C deposition in ASDEX Upgrade

Vainonen-Ahlgren, E., Likonen, J., Renvall, T., Rohde, V., Neu, R., Mayer, M., Pugno, R., Krieger, K. & ASDEX Upgrade Team, 2005, In : Journal of Nuclear Materials. 337-339, p. 55 - 59 5 p.

Research output: Contribution to journalArticleScientificpeer-review

18 Citations (Scopus)

Tritium related studies within the JET fusion technology work programme

Rosanvallon, S., Bekris, N., Braet, J., Coad, P., Counsell, G., Cristescu, I., Grisolia, C., Le Guern, F., Ionita, G., Likonen, J., Perevezenstev, A., Piazza, G., Poletiko, C., Rubel, M., Weulersse, J. M., Williams, J. & JET-EFDA Contributors, 2005, In : Fusion Science and Technology. 48, 1, p. 268 - 273 6 p.

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Tungsten redistribution patterns in ASDEX Upgrade

Krieger, K., Likonen, J., Mayer, M., Pugno, R., Rohde, V. & Vainonen-Ahlgren, E., 2005, In : Journal of Nuclear Materials. 337 - 339, p. 10 - 16 7 p.

Research output: Contribution to journalArticleScientificpeer-review

16 Citations (Scopus)
2004

Influence of nitride and oxide cap layers upon the annealing of 1.3 μm GaInNAs/GaAs quantum wells

Liu, H. F., Peng, C. S., Likonen, J., Jouhti, T., Karirinne, S., Konttinen, J. & Pessa, M., 2004, In : Journal of Applied Physics. 95, 8, p. 4102 - 4104 3 p.

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)

Overview of tracer techniques in studies of material erosion, re-deposition and fuel inventory in tokamaks

Rubel, M. J., Coad, J. P., Stenström, K., Wienhold, P., Likonen, J., Matthews, G. F. & Philipps, V., 2004, In : Journal of Nuclear Materials. 329 - 333, Part A, p. 795 - 799 5 p.

Research output: Contribution to journalArticleScientificpeer-review

28 Citations (Scopus)

Thermal annealing effect on 1.3-µm GaInNAs/GaAs quantum well structures capped with dielectric films

Liu, H. F., Peng, C. S., Likonen, J., Konttinen, J., Dhaka, V. D. S., Tkachenko, N. & Pessa, M., 2004, In : IEE proceedings: Optoelectronics. 151, 5, p. 267 - 270 4 p.

Research output: Contribution to journalArticleScientificpeer-review

2003

Carrier profiling and crystal quality evaluation of thin AlxGa1-xAs (0.22<x<0.86) films by electrochemical capacitance/voltage technique

Fedorenko, Y., Jouhti, T., Konttinen, J., Likonen, J. & Pessa, M., 2003, In : Journal of the Electrochemical Society. 150, 7, p. G380-G384 5 p.

Research output: Contribution to journalArticleScientificpeer-review

Doping impurity distribution and crystal quality evaluation of AlGaAs:Si films (0.22<x<0.86) by electrochemical etching technique

Fedorenko, Y., Jouhti, T., Konttinen, J., Likonen, J. & Pessa, M., 2003, In : Thin Solid Films. 428, 1-2, p. 181-184 5 p.

Research output: Contribution to journalArticleScientificpeer-review

Studies of impurity deposition/implantation in JET divertor tiles using SIMS and ion beam techniques

Likonen, J., Lehto, S., Coad, J. P., Renvall, T., Sajavaara, T., Ahlgren, T., Hole, D. E., Matthews, G. F., Keinonen, J. & work-programme, EFDA-JET., 2003, In : Fusion Engineering and Design. 66-68, p. 219-224 6 p.

Research output: Contribution to journalArticleScientificpeer-review

54 Citations (Scopus)

Tritium related studies at the JET facilities

Lässer, R., Bekris, N., Bell, A. C., Caldwell-Nichols, C., Cristescu, I., Ciattaglia, S., Coad, P., Day, C., Glugla, M., Likonen, J., Murdoch, D. K., Rosanvallon, S. & Scaffidi-Argentina, F., 2003, In : Fusion Engineering and Design. 69, 1-4, p. 75-80 6 p.

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)

Tungsten coating on JET divertor tiles for erosion/deposition studies

Lehto, S., Likonen, J., Coad, J. P., Ahlgren, T., Hole, D. E., Mayer, M., Maier, H. & Kolehmainen, J., 2003, In : Fusion Engineering and Design. 66-68, p. 241-245 5 p.

Research output: Contribution to journalArticleScientificpeer-review

33 Citations (Scopus)
2002

Annealing behaviour of deuterium in silicon doped carbon films

Likonen, J., Vainonen-Ahlgren, E., Ahlgren, T., Lehto, S., Sajavaara, T., Rydman, W., Keinonen, J., Katainen, J. & Wu, C., 2002, In : Contributions to Plasma Physics. 42, 2-4, p. 445-450

Research output: Contribution to journalArticleScientificpeer-review

Concentration of interstitial and substitutional nitrogen in GaNxAs1-x

Ahlgren, T., Vainonen-Ahlgren, E., Likonen, J., Li, W. & Pessa, M., 2002, In : Applied Physics Letters. 80, 13, p. 2314-2316

Research output: Contribution to journalArticleScientificpeer-review

61 Citations (Scopus)

Oxygen impurities in Ga0.51In0.49P grown by solid-source molecular bean epitaxy

Xiang, N., Tukiainen, A., Pessa, M., Dekker, J. & Likonen, J., 2002, In : Journal of Materials Science: Materials in Electronics. 13, 9, p. 549-552

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)

Structural, electrical, and optical properties of defects in Si-doped GaN grown by molecular-beam epitaxy on hydride vapor phase epitaxy GaN on sapphire

Laukkanen, P., Lehkonen, S., Uusimaa, P., Pessa, M., Likonen, J. & Keränen, J., 2002, In : Journal of Applied Physics. 92, 2, p. 786-792

Research output: Contribution to journalArticleScientificpeer-review

22 Citations (Scopus)
2001

Analysis of radioactive particles from the Kola Bay area

Pöllänen, R., Klemola, S., Tarja, I., Rissanen, K., Juhanoja, J. & Likonen, J., 2001, In : The Analyst. 126, 5, p. 724-730 7 p.

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Deuterium diffusion in silicon-doped diamondlike carbon films

Vainonen-Ahlgren, E., Ahlgren, T., Likonen, J., Lehto, S., Sajavaara, T., Rydman, W., Keinonen, J. & Wu, C., 2001, In : Physical Review B: Condensed Matter and Materials Physics. 63, 4, 7 p., 045406.

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Influence of dopants and substrate material on the formation of Ga vacancies in epitaxial GaN layers

Oila, J., Ranki, V., Kivioja, J., Saarinen, K., Hautojärvi, P., Likonen, J., Baranowski, J., Pakula, T., Suski, T., Leszcynski, M. & Grzegory, I., 2001, In : Physical Review B: Condensed Matter and Materials Physics. 63, 4, 8 p., 045205.

Research output: Contribution to journalArticleScientificpeer-review

94 Citations (Scopus)

Lattice parameter in GaNAs epilayers on GaAs: Deviation from Vegard's law

Li, W., Pessa, M. & Likonen, J., 2001, In : Applied Physics Letters. 78, 19, p. 2864-2866 3 p.

Research output: Contribution to journalArticleScientificpeer-review

124 Citations (Scopus)

Oxygen-related deep level defects in solid-source MBE grown GaInP

Xiang, N., Tukiainen, A., Dekker, J., Likonen, J. & Pessa, M., 2001, In : Journal of Crystal Growth. 227-228, p. 244-248 5 p.

Research output: Contribution to journalArticleScientificpeer-review

23 Citations (Scopus)

Silicon diffusion in amorphous carbon films

Vainonen-Ahlgren, E., Ahlgren, T., Khriachtcev, L., Likonen, J., Lehto, S., Keinonen, J. & Wu, C., 2001, In : Journal of Nuclear Materials. 290-293, p. 216-219 4 p.

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)
2000

Annealing behaviour of aluminium-implanted InP

Kyllönen, V., Räisänen, J., Seppälä, T., Ahlgren, T. & Likonen, J., 2000, In : Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms. 161-163, p. 673 - 676 4 p.

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Be redistribution in GaInP and growth of GaInP/A1InP tunnel diode by gas source molecular beam epitaxy

Li, W., Likonen, J., Haapamaa, J. & Pessa, M., 2000, In : Journal of Crystal Growth. 209, 2-3, p. 459-462 4 p.

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)