Ramon Wyss

Ramon Alexander Wyss (born 1 March 1952) is a Swedish theoretical nuclear physicist.^[2] He is a professor emeritus at the KTH Royal Institute of Technology in Stockholm.^[3] He served as Vice President for International Affairs at KTH in between 2002 to 2016.^[4] He held professorships at Peking University and Shanghai Jiao Tong University.^[5]

His research focuses on nuclear structure physics, using simple theoretical models to elucidate complex experimental findings.^[6]

In 1995, he was awarded the Edlundska prize of the Royal Swedish Academy of Science.^[7]

Ramon Wyss was born to Dieter Wyss and Ursula Wyss Daecke.^[8] He became a Swedish citizen in 1973 and earned his Teknologie doktor (PhD) in 1990, followed by a postdoc stay at the Joint Institute of Oak Ridge National Lab 1990-1992. He earned docent promotion in 1994 and in 2006 he was appointed professor of theoretical nuclear physics at KTH.^[9]

Wyss was appointed professor of theoretical nuclear physics at KTH in 2006.^[10][11]

From 2002 to 2016, Wyss served as Vice President of KTH in charge of international education and global partnerships.^[4]

After retiring from KTH, Wyss has worked on interdisciplinary projects linking physics and societal challenges. With Ayşe Ataç Nyberg, he co-founded the European ArtEmis Project in 2022^[12], aimed at building a sensor network to improve earthquake forecasting.^[13]

He currently serves as chair of both the governing and science boards of the project. He was the interim director of the Center for New Energy Technology Oskarshamn (CNETO).^[14]

He was co-chair for the International advisory board of Beijing Jiaotong University and in 2021 he was appointed to the international advisory board of Shanghai Jiao Tong University.^[11]

In 2009, he was reappointed Vice-President for international projects at KTH.^[5]

Research and Opinions

Wyss's theoretical contributions in nuclear physics include simplified microscopic-macroscopic approaches and rotational models, notably in studies of backbending and high-spin band structures.^[15][13]

His research has centered on nuclear structure^[16], including rotational motion^[17], backbending phenomena, particle decay^[18] and the development of nuclear models linking experimental and theoretical approaches.

He co-authored research on neutron-proton pairing in nuclei and other mass systematics, reinforcing the effectiveness of accessible models in describing complex nuclear behaviors.^[19]

In Sweden, he engaged in the debate for nuclear power as an energy source reducing CO2 emission.^[20]

• Qi, C.; Xu, F. R.; Liotta, R. J.; Wyss, R. (2009-08-13). "Universal Decay Law in Charged-Particle Emission and Exotic Cluster Radioactivity". Physical Review Letters. 103 (7) 072501. arXiv:0909.4492. Bibcode:2009PhRvL.103g2501Q. doi:10.1103/PhysRevLett.103.072501. ISSN 0031-9007. PMID 19792636.
• Andreyev, A. N.; Wyss, R.; Van Duppen P, null; Weissman, L.; Ackermann, D.; Gerl, J.; Hessberger, F. P.; Hofmann, S.; Kleinbohl, A.; Munzenberg, G.; Reshitko, S.; Schlegel, C.; Schaffner, H.; Cagarda, P.; Matos, M. (2000-05-25). "A triplet of differently shaped spin-zero states in the atomic nucleus 186Pb". Nature. 405 (6785): 430–433. doi:10.1038/35013012. ISSN 1476-4687. PMID 10839532.
• Wyss, R.; Nyberg, J.; Johnson, A.; Bengtsson, R.; Nazarewicz, W. (1988-12-15). "Highly deformed intruder bands in the A≈130 mass region". Physics Letters B. 215 (2): 211–217. Bibcode:1988PhLB..215..211W. doi:10.1016/0370-2693(88)91422-0. ISSN 0370-2693.
• Satuła, W.; Wyss, R. (1996-08-19), "Competition between T = 0 and T = 1 pairing in proton-rich nuclei", Physics Letters B, 393 (1–2): 1–6, arXiv:nucl-th/9608041, doi:10.1016/S0370-2693(96)01603-6, arXiv:nucl-th/9608041
• Xu, F.R.; Walker, P.M.; Sheikh, J.A.; Wyss, R. (1998). "Multi-quasiparticle potential-energy surfaces". Physics Letters B. 435 (3–4): 257–263. Bibcode:1998PhLB..435..257X. doi:10.1016/S0370-2693(98)00857-0.
• Satuła, W.; Wyss, R.; Magierski, P. (1994-10-03). "The Lipkin-Nogami formalism for the cranked mean field". Nuclear Physics A. 578 (1): 45–61. Bibcode:1994NuPhA.578...45S. doi:10.1016/0375-9474(94)90968-7. ISSN 0375-9474.
• Xu, F. R.; Zhao, E. G.; Wyss, R.; Walker, P. M. (2004-06-25). "Enhanced Stability of Superheavy Nuclei Due to High-Spin Isomerism". Physical Review Letters. 92 (25) 252501. arXiv:nucl-th/0404093. Bibcode:2004PhRvL..92y2501X. doi:10.1103/PhysRevLett.92.252501. ISSN 0031-9007. PMID 15244999.
• Wyss, R.; Granderath, A.; Bengtsson, R.; von Brentano, P.; Dewald, A.; Gelberg, A.; Gizon, A.; Gizon, J.; Harissopulos, S.; Johnson, A.; Lieberz, W.; Nazarewicz, W.; Nyberg, J.; Schiffer, K. (1989-12-11). "Interplay between proton and neutron S-bands in the Xe-Ba-Ce-region". Nuclear Physics A. 505 (2): 337–351. Bibcode:1989NuPhA.505..337W. doi:10.1016/0375-9474(89)90378-3. ISSN 0375-9474.
• Nazarewicz, W.; Wyss, R.; Johnson, A. (1989-10-23). "Structure of superdeformed bands in the A ≈ 150 mass region". Nuclear Physics A. 503 (2): 285–330. doi:10.1016/0375-9474(89)90238-8. ISSN 0375-9474.
• Xu, F. R.; Satula, W.; Wyss, R. (1999-12-02), "Quadrupole pairing interaction and signature inversion", Nuclear Physics A, 669 (1–2): 119–134, arXiv:nucl-th/9912006, doi:10.1016/S0375-9474(99)00817-9, arXiv:nucl-th/9912006
• Satula, W.; Ćwiok, S.; Nazarewicz, W.; Wyss, R.; Johnson, A. (1991-07-08). "Structure of superdeformed states in AuRa nuclei". Nuclear Physics A. 529 (2): 289–314. Bibcode:1991NuPhA.529..289S. doi:10.1016/0375-9474(91)90797-A. ISSN 0375-9474.
• Wyss, R. A.; Johnson, A.; Nyberg, J.; Bengtsson, R.; Nazarewicz, W. (1988-06-01). "Competition between (h11/2)2 proton and neutron excitations around128Ba: Coexistence of near prolate and near oblate shapes at high spin". Zeitschrift für Physik A Atomic Nuclei. 329 (2): 255–256. doi:10.1007/BF01283782. ISSN 0939-7922.
• Wyss, R.; Satuła, W.; Nazarewicz, W.; Johnson, A. (1990-05-07). "Competition between triaxial bands and highly deformed intruder bands around 180Os". Nuclear Physics A. 511 (2): 324–344. doi:10.1016/0375-9474(90)90163-G. ISSN 0375-9474.

• Wyss publications
• Wyss profile