I am located at

Center for Joint Quantum Studies
School of Science
Tianjin University


You reach me at
+86 130 1136 5825

Mailing address:
Professor Klavs Hansen
School of Science
Tianjin University
Tianjin 300354
P.R. China


I am also
Senior Visiting Professor
at KU Leuven



Coming events

in Zagreb
The conference has been rescheduled
to July 2021

Erice workshop
at the Ettore Majorana Center:
 Dynamics of Electrons in Atomic
and Molecular Nanoclusters

The workshop has been rescheduled to
October 24-30, 2021

Table of contents, 1st edition
Table of contents, 2
nd edition

Download (requires library access)

Order here (Euro link)
Order here (US$ link)

The book is available as a softcover
print-on-demand for 25 Euros/US$ if your
library subscribes to a Springer e-book

Errata 1st edition (2017-09-10)
(this list will no longer be updated;
please refer to the second edition)
Errata 2nd edition (2020-05-17)

                                    Welcome to the home page of
                                     Klavs Hansen

                     I work with statistical processes in clusters and large molecules.
                             Tools: Ion storage rings, mass spectrometers, lasers
                          Subjects: Energies, thermodynamics, radiative cooling

Recent publications

Photoelectric effect with a twist
Giovanni De Ninno, Jonas Wätzel, Primo Rebernik Ribič, Enrico Allaria, Marcello Coreno, Miltcho B. Danailov, Christian David, Alexander Demidovich, Michele Di Fraia, Luca Giannessi, Klavs Hansen, Špela Krušic, Michele Manfredda, Michael Meyer, Andrej Mihelič, Najmeh Mirian, Oksana Plekan, Barbara Ressel, Benedikt Rösner, Alberto Simoncig, Simone Spampinati, Matija Stupar, Matja itnik, Marco Zangrando, Carlo Callegari, Jamal Berakdar
Nature Photonics
14 (2020) 554-558
Summary (in Chinese)

Negative ion relaxation and reactions in a cryogenic storage ring
H.T Schmidt, S Rosén, R.D. Thomas, M.H. Stockett, W.D. Geppert, Å. Larson, P. Löfgren, A. Simonsson, A Källberg, P. Reinhed, M. Bjökhage, M. Blom, J.D. Alexander, P.K. Najeeb, M. Ji, N. Kono, E.K. Anderson, G. Eklund, M.K. Kristiansson, O.M. Hole, D. Hanstorp, H. Hartman, P.S. Barklem, J. Grumer, K. Hansen, M. Gatchell, H. Cederquist and H. Zettergren
Proceedings of ICPEAC 2019
J. Phys. Conf. Series
1412 (2020) 062006

Vibrational autodetachment from hot copper dimer anions: breakdown of the Born-Oppenheimer approximation
E. K. Anderson, A. F. Schmidt-May, P. K. Najeeb, G. Eklund, S. Rosén, M. H. Stockett, K. Chartkunchand, M. Kaminska, K. Hansen, H. Cederquist, H. Zettergren and H. T. Schmidt
Proceedings of ICPEAC 2019
J. Phys. Conf. Series
1412 (2020) 232012

Rotationally resolved excitation spectra measured by slow electron detachment from Si2-
Shimpei Iida, Susumu Kuma, Jun Matsumoto, Takeshi Furukawa, Hajime Tanuma, Toshiyuki Azuma, Haruo Shiromaru, Vitali Zhaunerchyk, and Klavs Hansen
J. Phys. Chem. Lett. 11 (2020) 5199-5203

Gas‐phase Förster resonance energy transfer in mass‐selected ions with methylene or peptide linkers between two dyes: A concerted dance of charges
Christina Kj
ær, Ying Zhao, Mark H. Stockett, Li Chen, Klavs Hansen and Steen Brøndsted Nielsen
Phys. Chem. Chem. Phys.
22 (2020) 11095

Spontaneous electron emission from hot silver dimer anions: Breakdown of the Born-Oppenheimer approximation
E. K. Anderson, A. F. Schmidt-May, P. K. Najeeb, G. Eklund, K. C. Chartkunchand, S. Rosén, Å. Larson, K. Hansen, H. Cederquist, H. Zettergren, and H. T. Schmidt
Phys. Rev. Lett.
124 (2020) 173001

Iodization Threshold in Size-Dependent Reactions of Lead Clusters Pbn+ with Iodomethane
Mengzhou Yang, Haiming Wu, Benben Huang, Zhixun Luo, and Klavs Hansen
J. Phys. Chem. A
124 (2020) 2505-2512

Thermal damping of odd-even effects in gold clusters
K. Hansen
Chem. Phys.
530 (2020) 110637(1-6)

Description of unimolecular reaction rates of Lennard-Jones clusters
K. Hansen:
J. Phys. B 52(23) (2019) 235101

Radiative cooling of size-selected gas phase clusters
Piero Ferrari, Ewald Janssens, Peter Lievens, Klavs Hansen:
Int. Rev. Phys. Chem.
38 (2019) 405-440

Vibrational Autodetachment from Anionic Nitroalkane Chains – From Molecular Signatures to Thermionic Emission
Christopher L. Adams, Klavs Hansen, and J. Mathias Weber
J. Phys. Chem. A 
123 (2019) 8562-8570

Photon generated hot electron phase of clusters and molecules
V. Zhaunerchyk, and K. Hansen
Proceedings of National Photonics Symposium,
Published by the Directorate of Public Relations and Publications for International School of Photonics,
Cochin University of Science and Technology
ISBN 978-81-936217-8-3 (2019) 58

More whiffs of the aromatic universe
K. Hansen, and P. Ferrari
Physics Today
72, 9 (2019) 12
doi: 10.1063/PT.3.4283

Influence of thermal radiation on hot cluster decay rates and abundances
K. Hansen and P. Ferrari
Chinese Journal of Chemical Physics
32 (2019) 167-174

Selective C-C and C-N Bond Activation in Dopamine and Norepinephrine under Deep Ultraviolet Laser Irradiation
Haiming Wu, Mengdi Guo, Mengzhou Yang, Zhixun Luo and Klavs Hansen
Chem. Comm. 55 (2019) 4015-4018

Magic numbers and stabilities of heavy water clusters, (D2O)ND+, N=3-48
K. Hansen, M. Ryding, E. Uggerud
Int. J. Mass Spectrom.
440 (2019) 14-19

Non-scrambling of hydrogen in NH4+(H2O)3 clusters
K. Hansen, A. E. K. Sundén, K. Støchkel, S. Brøndsted Nielsen, B. Dynefors
RSC Advances 9 (2019) 6620-6626

The classical capture cross section of an electron and neutral and anionic polarizable molecules with permanent dipole moments
K. Hansen
Int. J. Mass Spectrom. 438 (2019) 142-147

Radiative cooling of cationic carbon clusters, CN+, N=8,10,13-16
F.-Q. Chen, N. Kono, R. Suzuki, T. Furukawa, H. Tanuma, P. Ferrari, T. Azuma, H. Shiromaru, V. Zhaunerchyk, K. Hansen
Phys. Chem. Chem. Phys.  
21 (2019) 1587-1596

All publications