Senior researchers

Lecturers, university researchers, academy research fellows, research directors
Tommy Ahlgren

University lecturer (Doc.)

Teaching basic-level physics courses in Swedish.
Research focuses on experiments and simulations of defect evolution in materials.
Present projects include kinetic Rate Equation (kRE) simulations of fusion first wall materials.

Office:  Accelerator laboratory 110

Phone: +358 29 4150648,  +358 50 3112599


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Jesper Byggmästar

Academy research fellow (PhD)

Research:  Interatomic potentials, machine learning, fusion reactor materials, radiation damage

Office:  Accelerator laboratory 109


[Contact]  [Research portal]

Fredric Granberg

University researcher (Doc.)

I am a University researcher at the University of Helsinki focusing on computational material science. I am the team leader for the Advanced Computing Hub Helsinki project under EUROfusion. My main research field is Molecular Dynamics simulations of irradiation in metals. The main focus is on high-dose effects in fusion relevant metals (W, Fe and Fe-alloys) as well as Multicomponent alloys. Another focus is on surface irradiation effects such as sputtering of fusion relevant materials.

Office: Accelerator laboratory 112

Phone: +358 50 311 2603, +358 29 415 0036


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Antti Kuronen

University Lecturer (Doc.)

My research concentrates on atomic level modeling of materials; using molecular dynamics and Monte Carlo simulations. Recently, the studies have been dealing mostly with mechanical properties of materials on atomic level. 

Office:  Accelerator laboratory, 110

Phone: +358 29 415 0083,  +358 50 415 6816


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Aleksi Leino

University researcher (Ph.D.)

Simulations of ion irradiation effects in solids. In particular, I study swift heavy ion effects and develop related methods. The primary simulation method is molecular dynamics.

Office:  Accelerator laboratory, 122

Phone: +358 50 4154837



Eryang Lu

Academy research fellow (Ph.D.)

My research topic is experimental materials physics; by combing ion beam based materials modification and advanced microstructural characterization methods, such as particle irradiation, high-resolution electron microscopy, X-ray related methods and positron annihilation spectroscopy etc. My studies focus on the fundamental understanding of mass transport and defect evolution mechanisms in elemental metals and multi-principal random alloys.

Office:  Accelerator laboratory, 135b


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Ilja Makkonen

University Lecturer, Dr. Sci. (Tech.), Doc. (Aalto)

Application and development of computational methods to describe defects in crystalline solids. Supporting theory for defect identification with positron annihilation.

Office: Accelerator laboratory 109

Phone: +358 2941 50694, +358 503533630

Email: ilja.makkonen

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Kenichiro Mizo­hata

University researcher  (PhD)

Kenza is the main researcher in the accelerator mass spectrometry research group since September 2017 and responsible for the AMS measurements done in the laboratory as well as for the associated beam-time scheduling, AMS data-analysis, and reporting.

Office:  Accelerator laboratory 135a

Phone: +358 29 41 50116


[Contact]  [Research]  [Reseach portal]

Jonatan Slotte

Research Director (Doc.)

Research topics: Point defects in elemental and compound semiconductors. Positron thermalization and annihilation at ultra cold temperatures. Positron annihilation spectroscopy development.

Office: Accelerator laboratory  135b

Phone:  +358 50 5606104



Harriet Åhlgren

Academy research fellow (Ph.D)

My research is focused on designing and investigating functional nano- and quantum structures in solid state matrices. I develop and employ ion implantation techniques for nanomaterials, apply high resolution electron microscopy for characterisation and explore the material's functionalisation via in situ measurements. The experimental work is supported by multiscale theoretical modeling that provides a complementary insight into the structures.

Office: Accelerator laboratory 135a


[Contact]  [Research portal]