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
Beiyangyuan Campus
Tianjin University
Jinnan District
Tianjin 300354
P.R. China


I am also

Senior Visiting Professor
at KU Leuven


Coming events

ESD 2019

Electrostatic Storage Devices,
Tianjin, August 26-30, 2019

Erice workshop 2020
at the Ettore Majorana Center:
Delocalized electrons
in Atomic and Molecular Nanoclusters

(tentative title)

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 (2019-06-19)

                                    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

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

Electronic and vibrational radiative cooling of the small carbon clusters C4- and C6 -
N. Kono, R. Suzuki, T. Furukawa, J. Matsumoto, H. Tanuma, H. Shiromaru, T. Azuma, and K. Hansen
Phys. Rev. A
98 (2018) 063434

Stability of small cationic platinum clusters
Piero Ferrari, Klavs Hansen, Peter Lievens, and Ewald Janssens
Phys. Chem. Chem. Phys. 20 (2018) 29085
Selected as a 2018 PCCP HOT article

Statistical physics of nanoparticles in the gas phase
Klavs Hansen
Springer, Dordrecht (2018)
nd edition)

Decay of excited silver cluster anions Agn-, n = 4 to 7 in DESIREE
E. K. Anderson, M. Kaminska, K. C. Chartkunchand, G. Eklund, M. Gatchell, K. Hansen, H. Zettergren, H. Cederquist, and H. T. Schmidt
Phys. Rev. A
98 (2018) 022705

The effect of radiative cooling on the size-dependent stability of small boron clusters
Piero Ferrari, Jan Vanbuel, Klavs Hansen, Peter Lievens, Ewald Janssens, André Fielicke
Phys. Rev. A
98 (2018) 012501

Stabilities of protonated water-ammonia clusters
A.E.K. Sundén, K. Støchkel, P. Hvelplund, S. Brøndsted Nielsen,  B. Dynefors, and K. Hansen
J. Chem. Phys.
148 (2018) 184306

Action spectroscopy of highly excited molecular ions in molecular beams
K. Hansen
Int. J. Mass. Spectrom.
430 (2018) 14-21

Tunneling and reflection in unimolecular reaction kinetic energy release distributions
K. Hansen
Chem. Phys. Lett.
693 (2018) 66-71
(Editor’s Choice)

All publications