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Published articles:
A. Lawicki, A.I.S. Holm, P. Rousseau, M. Capron, R. Maisonny, S. Maclot, F. Seitz, H.A.B. Johansson, S. Rosén, H.T. Schmidt, H. Zettergren, B. Manil, L. Adoui, H. Cederquist, B.A. Huber: Multiple ionization and fragmentation of isolated pyrene and coronene molecules in collision with ions, Phys. Rev. A 83, 022704 (2011)

A.I.S. Holm, H.A.B. Johansson, H. Cederquist, H. Zettergren: Dissociation and multiple ionization energies for five polycyclic aromatic hydrocarbon molecules, J. Chem. Phys. 134, 044301 (2011)

N. Haag, A.I.S. Holm, H.A.B. Johansson, H. Zettergren, H.T. Schmidt, S.B. Nielsen, P. Hvelplund, H. Cederquist: Electron capture induced dissociation of doubly protonated pentapeptides: Dependence on molecular structure and charge separation, J. Chem. Phys. 134, 035102 (2011)

A.I.S. Holm, H. Zettergren, H.A.B. Johansson, F. Seitz, S. Rosén, H.T. Schmidt, A. Lawicki, J. Rangama, P. Rousseau, M. Capron, R. Maisonny, L. Adoui, A. Méry, B. Manil, B.A. Huber, H. Cederquist: Ions Colliding with Cold Polycyclic Aromatic Hydrocarbon Clusters, Phys. Rev. Lett. 105, 213401 (2010)

H. Zettergren, H. A. B. Johansson, H. T. Schmidt, J. Jensen, P. Hvelplund, S. Tomita, Y. Wang, F. Martín, M. Alcamí, B. Manil, L. Maunoury, B. A. Huber, H. Cederquist: Magic and hot giant fullerenes formed inside ion irradiated weakly bound C₆₀ clusters, J. Chem. Phys. 133, 104301 (2010)

M. Gudmundsson, D. Fischer, N. Haag, H.A.B. Johansson, D. Misra, P. Reinhed, H. Schmidt-Böcking, R. Schuch, M. Schöffler, K. Støchkel, H.T. Schmidt, H. Cederquist: Angular scattering in fast ion–atom electron transfer collisions: projectile wave diffraction and Thomas mechanisms, Journal of Physics B, 43, 185209 (2010)

P. Reinhed, A. Orbán, S. Rosén, R.D. Thomas, I. Kashperka, H.A.B. Johansson, D. Misra, A. Fardi, L. Brännholm, M. Björkhage, H. Cederquist, H.T. Schmidt: Cryogenic keV ion-beam storage in ConeTrap—A tool for ion-temperature control, Nuclear Instruments and Methods in Physics Research Section A, 621, 83-90 (2010)

D. Fischer, M. Gudmundsson, Z. Berényi, N. Haag, H. A. B. Johansson, D. Misra, P. Reinhed, A. Källberg, A. Simonsson, K. Støchkel, H. Cederquist, H.T. Schmidt: Importance of Thomas single-electron transfer in fast p-He collisions, Phys. Rev. A 81, 012714 (2010)

S. Wethekam, H. Zettergren, Ch. Linsmeier, H. Cederquist, H. Winter: Resonant electron capture by C₆₀ ions at a metal surface with projected band gap, Phys. Rev. B 81, 121416 (2010)

J.A. Wyer, H. Cederquist, N. Haag, B.A. Huber, P. Hvelplund, H.A.B. Johansson, R. Maisonny, S.B. Nielsen, J. Rangama, P. Rousseau, H.T. Schmidt: On the hydrogen loss from protonated nucleobases after electronic excitation or collisional electron capture, European Journal of Mass Spectrometry, 15, 681-688 (2009)

P. Reinhed, A. Orbán, J. Werner, S. Rosén, R.D. Thomas, I. Kashperka, H.A.B. Johansson, D. Misra, L. Brännholm, M. Björkhage, H. Cederquist, and H. T. Schmidt: Precision Lifetime Measurements of He^- in a Cryogenic Electrostatic Ion-Beam Trap, Phys. Rev. Lett, 103, 213002 (2009)

H.Zettergren, L. Adoui, V. Bernigaud, H. Cederquist, N. Haag, A.I.S. Holm, B.A. Huber, P. Hvelplund, H. Johansson, U. Kadhane, M.K. Larsen, B. Liu, B. Manil, S.B. Nielsen, S. Panja, J. Rangama, P. Reinhed, H.T. Schmidt, K. Støchkel: Electron-Capture-Induced Dissociation of Microsolvated Di- and Tripeptide Monocations: Elucidation of Fragmentation Channels from Measurements of Negative Ions, ChemPhysChem, 10, 1619-1623, (2009)

D. Misra, H.T. Schmidt, M. Gudmundsson, D. Fischer, N. Haag, H.A.B. Johansson, A. Källberg, B. Najjari, P. Reinhed, R. Schuch, M. Schöffler, A. Simonsson, A.B. Voitkiv, and H. Cederquist: Two-Center Double-Capture Interference in Fast He²⁺+H₂ Collisions, Physical Review Letters 102, 153201 (2009)

N. Haag, Z. Berenyi, P. Reinhed, D. Fischer, M. Gudmundsson, H.A.B. Johansson, H.T. Schmidt, H. Cederquist, H. Zettergren: 'Kinetic-energy-release distributions and barrier heights for C₂⁺ emission from multiply charged C₆₀ and C₇₀ fullerenes', Physical Review A 78, 043201 (2008)

H.T. Schmidt, H.A.B. Johansson, R.D. Thomas, W.D. Geppert, N. Haag, P. Reinhed, S. Rosén, M. Larsson, H. Danared, K.-G. Rensfelt, L. Liljeby, L. Bagge, M. Björkhage, M. Blom, P. Löfgren, A. Källberg, A. Simonsson, A. Paál, H. Zettergren, and H. Cederquist: 'DESIREE as a new tool for interstellar ion chemistry', International Journal of Astrobiology 7, 205 (2008)

V. Bernigaud, H. Cederquist, N. Haag, A.I.S. Holm, B.A. Huber, P. Hvelplund, U. Kadhane, M.K. Larsen, B. Manil, S.B. Nielsen, S. Panja, S. Ptasinska, J. Rangama, P. Reinhed, H.T. Schmidt, A.V. Streletskii, K. Støchkel, E.S. Worm, and H. Zettergren: 'Electron capture-induced dissociation of AK dipeptide dications: Influence of ion velocity, crown-ether complexation and collision gas', International Journal of Mass Spectrometry 276, 77 (2008)

H.T. Schmidt, D. Fischer, Z. Berenyi, C.L. Cocke, M. Gudmundsson, N. Haag, H.A.B. Johansson, A. Källberg, S.B. Levin, P. Reinhed, U. Sassenberg, R. Schuch, A. Simonsson, K. Støchkel: 'Evidence of wave-particle duality for single fast hydrogen atoms', Phys. Rev. Lett. 101, 083201 (2008)

J. Bernard, G. Montagne, R. Bredy, B. Terpend-Ordaciere, A. Bourgey, M. Kerleroux, L. Chen, H.T. Schmidt, H. Cederquist, and S. Martin: 'A "tabletop" electrostatic ion storage ring: Mini-Ring', Review of Scientific Instruments 79, 075109 (2008)

B. Liu, N. Haag, H. Johansson, H.T. Schmidt, H. Cederquist, S.B. Nielsen, H. Zettergren, P. Hvelplund, B. Manil, and B.A. Huber: 'Electron capture induced dissociation of nucleotide anions in water nanodroplets', Journal of Chemical Physics 128, 075102 (2008)

S. Rosén, H.T. Schmidt, P. Reinhed, D. Fischer, R.D. Thomas, H. Cederquist, L. Liljeby, L. Bagge, S. Leontein, and M. Blom, 'Operating a triple stack microchannel plate-phosphor assembly for single particle counting in the 12-300 K temperature range', Review of Scientific Instruments 78, 113301 (2007)

S. Wethekam, H. Winter, H. Cederquist, and H. Zettergren: 'Neutralization of charged fullerenes during grazing scattering from a metal surface', Phys. Rev. Lett. 99, 037601 (2007)

H. Zettergren, H.T. Schmidt, P. Reinhed, H. Cederquist, J. Jensen, P. Hvelplund, S. Tomita, B. Manil, J. Rangama, and B.A. Huber; 'Stabilities of multiply charged dimers and clusters of fullerenes', Journal of Chemical Physics 126, 224303 (2007)

H. Zettergren, H.T. Schmidt, P. Reinhed, H. Cederquist, J. Jensen, P. Hvelplund, S. Tomita, B. Manil, J. Rangama, and B.A. Huber: 'Even-odd effects in the ionization cross sections of [C₆₀]₂ and [C₆₀C₇₀] dimers', Physical Review A 75, 051201 (2007)

B. Liu, S. Brøndsted Nielsen, P. Hvelplund, H. Zettergren, H. Cederquist, B. Manil, and B. A. Huber: 'Collision-Induced Dissociation of Hydrated Adenosine Monophosphate Nucleotide Ions: Protection of the Ion in Water Nanoclusters', Phys. Rev. Lett. 97, 133401 (2006)

O. Kamalou, B. Manil, H. Lebius, J. Rangama, B.A. Huber, P. Hvelplund, S. Tomita, J. Jensen, H.T. Schmidt, H. Zettergren, and H. Cederquist: 'Fullerene collisions and clusters of fullerenes', International Journal of Mass Spectrometry 252, 117 (2006)

D. Fischer, K. Støchkel, H. Cederquist, H. Zettergren, P. Reinhed, R. Schuch, A. Källberg, and H. T. Schmidt, 'Experimental separation of the Thomas charge transfer process in high velocity p-He collisions', Physical Review A 73, 052713 (2006)

H. Zettergren, P. Reinhed, K. Støchkel, H. T. Schmidt, H. Cederquist, J. Jensen, S. Tomita, S. B. Nielsen, P. Hvelplund, B. Manil, J. Rangama, and B. A. Huber: Fragmentation and ionization of C₇₀ and C₆₀ by slow ions of intermediate charge, Eur. Phys. J. D 38, 299 (2006)

S. Tomita, J. U. Andersen, H. Cederquist, B. Concina, O. Echt, J.S. Forster, K. Hansen, B. A. Huber, P. Hvelplund, J. Jensen, B. Liu, B. Manil, L. Maunoury, S. Brøndsted Nielsen, J. Rangama, H. T. Schmidt, and H. Zettergren: Lifetimes of C₆₀^2- and C₇₀^2- dianions in a storage ring, J. Chem . Phys. 124, 024310 (2006)

H. Schmidt-Böcking, M. Schöffler, T. Jahnke, A. Czasch, V. Mergel, L. Schmidt, R. Dörner, O. Jagutzki, M. Hattass, T. Weber, E. Weigold, A. Kheifets, H. T. Schmidt, R. Schuch, H. Cederquist,Y. Demkov, C. Whelan, A. Godunov, J. Walters: 'Many-particle fragmentation processes in atomic and molecular physics new insight into the world of correlation', Nuclear Instruments and Methods B 233, 3 (2005)

H. T. Schmidt, J. Jensen, P. Reinhed, R. Schuch, K. Støchkel, H. Zettergren, H. Cederquist, L. Bagge, H. Danared, A. Källberg, H. Schmidt-Böcking, and C. L. Cocke: Recoil-ion momentum distribution for Transfer Ionization in fast proton-He collisions, Phys. Rev. A 72, 012713 (2005)

B. Manil, L. Maunoury, J. Jensen, H. Cederquist, H. T. Schmidt, H. Zettergren, P. Hvelplund, S. Tomita, and B. A. Huber: Fragmentation of charged fullerene dimers: Kinetic energy release, Nuclear Instruments and Methods B 235, 419 (2005)

K. Støchkel, O. Eidem, H. Cederquist, H. Zettergren, P. Reinhed, R. Schuch, C. L. Cocke, S. B. Levin, V. N. Ostrovsky, A. Källberg, A. Simonsson, J. Jensen, and H. T. Schmidt: Observation of two-center interference effects in proton-H₂ collisions, Phys. Rev. A 72, 050703(R) (2005)

H. T. Schmidt, A. Fardi, J. Jensen, P. Reinhed, R. Schuch, K. Støchkel, H. Zettergren, H. Cederquist and C.L. Cocke: 'Transfer ionization in p+He collisions', Nuclear Instruments and Methods B 233, 43 (2005)

L. Maunoury, B. Manil, J. Rangama, H. Lebius, B.A. Huber, J.Y. Pacquet, R. Leroy, U. V. Pedersen, P. Hvelplund, J. Jensen , S. Tomita, H. Zettergren, H.T. Schmidt and H. Cederquist: Ion beams of carbon clusters and multiply charged fullerenes produced with ECR ion sources, Rev. Sci. Instrum. 76, 053304 (2005)

H. Zettergren, J. Jensen, H.T. Schmidt, and H. Cederquist: Electrostatic model calculations of fission barriers for fullerene ions, Eur. Phys. J. D 29, 63 (2004)

J. Jensen, H. Zettergren, H. T. Schmidt, H. Cederquist, S. Tomita, S. B. Nielsen, J. Rangama, P. Hvelplund, B. Manil and B. A. Huber: Ionization of C₇₀ and C₆₀ molecules by slow highly charged ions: A comparison, Phys. Rev. A 69, 053203 (2004)

J. U. Andersen, H. Cederquist, J. S. Forster, B. A. Huber, P. Hvelplund, J. Jensen, B. Liu, B. Manil, L. Maunoury, S. Brøndsted Nielsen, U. V. Pedersen, J. Rangama, H. T. Schmidt, S. Tomita and H. Zettergren: Photodissociation of protonated amino acids and peptides in an ion storage ring. Determination of Arrhenius parameters in the high-temperature limit, Phys. Chem. Chem. Phys. 6, 2676 (2004)

B. Manil, L. Maunoury, B.A. Huber, J. Jensen, H. T. Schmidt, H. Zettergren, H. Cederquist, S. Tomita and P. Hvelplund: Highly charged clusters of fullerenes: charge mobility and appearance size , Phys. Rev. Lett. 91, 215504 (2003)

J. U. Andersen, H. Cederquist, J.S. Forster, B. Huber, P. Hvelplund, J. Jensen, B. Liu, L. Maunoury, B. Manil, S. Brøndsted Nielsen, U.V. Pedersen, H.T. Schmidt, S. Tomita and H. Zettergren: Power-law decay of collisionally excited amino acids and quenching by radiative cooling, Eur. Phys. J. D 25, 139 (2003)

P. Hvelplund, B. Liu, S. B. Nielsen, S. Tomita, H. Cederquist, J. Jensen, H. T. Schmidt, and H. Zettergren: Electron Capture and Loss by Protonated Peptides and Proteins in Collisions with C₆₀ and Na, Eur. Phys. J. D 22, 75 (2003)

H. Schmidt-Böcking, V. Mergel, R. Dörner, C. L. Cocke, O. Jagutzki, L. Schmidt, Th. Weber, H. J. Ldde, E. Weigold, Yu. V. Popov, H. Cederquist, H. T. Schmidt, R. Schuch, and A. S. Kheifets: Revealing the non-s² contributions in the momentum wave function of ground state He, Europhys. Lett. 62, 477 (2003)

H. Cederquist, H.T. Schmidt, H. Zettergren, J. Jensen, S. Tomita, P. Hvelplund, B.A. Huber, and B. Manil: Barriers for Asymmetric Fission of Multiply Charged C₆₀ Fullerenes, Phys. Rev. A 67, 062719 (2003)

J. Bernard, S. Martin, L. Chen, H. Cederquist, A. Salmoun, and R. Bredy: 'A single ion (Ar^q+ q=1, 3 or C₆₀³⁺) in a conic electrode electrostatic trap', NIM B 205, 196 (2003)

J. Jensen, H. Zettergren, A. Fardi, H. T. Schmidt, and H. Cederquist, Energy releases in the fission of multiply charged C₆₀ ions, NIM B 205, 643 (2003)

H. T. Schmidt, A. Fardi, R. Schuch, S. H. Schwartz, H. Zettergren, H. Cederquist, L. Bagge, A. Källberg, J. Jensen, K.-G. Rensfelt, V. Mergel, L. Schmidt, H. Schmidt-Böcking, and C. L. Cocke: Double-to-single target ionization ratio for electron capture in fast p-He collisions, Phys. Rev. Lett. 89, 163201 (2002)

H. Zettergren, H. T. Schmidt, H. Cederquist, J. Jensen, S. Tomita, P. Hvelplund, H. Lebius, and B. Huber: The static over-the-barrier model for electron transfer between metallic spherical objects, Phys. Rev. A 66 032710, (2002)

A. Langereis, A. Fardi, K. Haghighat, H. T. Schmidt, S. H. Schwartz, and H. Cederquist: Stabilization of electrons on Ar^q+ after slow collisions with C₆₀, Phys. Rev. A 63, 062725 (2001)

H. Cederquist, P. Hvelplund, H. Lebius, H. T. Schmidt, S. Tomita, and B. Huber: Non-fragmenting charge transfer in slow peripheral C₆₀^q+-C₆₀ collisions, Phys. Rev. A. 63, 025201 (2001)

H. T. Schmidt, H. Cederquist, J. Jensen, and A. Fardi: Conetrap: A compact electrostatic ion trap, NIM B 173, 523 (2001)

S. H. Schwartz, A. Fardi, K. Haghighat, A. Langereis, H. T. Schmidt, and H. Cederquist: Experimental absolute and total electron capture cross sections in Ar^q+-C₆₀ collisions at 3.3qkeV, Phys. Rev. A. 63, 013201 (2001)

A. Fardi, H. Cederquist and H.T. Schmidt: Lifetime measurements on metastable He-like ions Hyperfine Interactions 127, 247 (2000)

J. Opitz, H. Lebius, S. Tomita, B. A. Huber, A. Bordenave-Montesquieu, D. Bordenave-Montesquieu, P. Moreto Capello, A. Reinköster, U. Werner, H. O. Lutz, A. Niehaus, M. Benndorf, K. Haghighat, H. T. Schmidt, and H. Cederquist: Electronic excitation in H⁺-C₆₀ collisions: Evaporation and ionization, Phys. Rev. A. 62, 022705 (2000)

H. Cederquist, A. Fardi, K. Haghighat, A. Langereis, H. T. Schmidt, S. H. Schwartz, J. C. Levin, I. A. Sellin, H. Lebius, B. Huber, M. O. Larsson, and P. Hvelplund: Electronic Response of C₆₀ in Slow Collisions with Highly Charged Ions, Phys. Rev. A 61, 022712 (2000)

I.A. Sellin, J. C. Levin, H. T. Schmidt, S. H. Schwartz, A. Fardi, K. Haghighat, H. Cederquist, L. Liljeby and A. Langereis: Absolute rates for radiative and non-radiative deexcitation of metastable He⁺(2s) in targets of variable polarizability, NIM B. 154, 83 (1999)

H. Cederquist, A. Fardi, K. Haghighat, A. Langereis, H.T. Schmidt, and S.H. Schwartz: 'Highly charged ions colliding with atoms, surfaces and clusters', Physica Scripta T80, 46 (1999)

J. Opitz, H. Lebius, B. Saint, B.A. Huber and H. Cederquist: 'Correlation studies of energy gain and fragmentation in ion-fullerene collisions', Phys. Rev. A 59, 3562 (1999)

K. Hansen, J. U. Andersen, H. Cederquist, C. Gottrup, P. Hvelplund, M. O. Larsson, V. V. Petrunin, and H. T. Schmidt: Thermionic emission laser spectroscopy of stored C₆₀', Eur. Phys. J. D 9, 351 (1999)

H. T. Schmidt, S. H. Schwartz, A. Fardi, K. Haghighat, H. Cederquist, L. Liljeby, A. Langereis, J. C. Levin and I. A. Sellin: Method for determining absolute partial cross sections for radiative and non-radiative deexcitation of metastable hydrogen-like ions, Phys. Rev. A 58, 2887 (1998)

H. T. Schmidt, S. H. Schwartz, H. Cederquist, L. Liljeby, J. C. Levin, and I. A. Sellin: 'Absolute rates for radiative and nonradiative collisional deexcitation of metastable He+(2s) ions', Physical Review A, 57, R4082 (1998)

M. O. Larsson, P. Hvelplund, M. C. Larsen, H. Shen, H. Cederquist and H. T. Schmidt: Electron capture and energy loss in ∼100 keV collisions of atomic and molecular ions on C₆₀, International Journal of Mass Spectrometry and Ion Processes 177, 51 (1998)

H. T. Schmidt, H. Cederquist, R. Schuch, L. Bagge, A. Källberg, J. Hilke, K. G. Rensfelt, V. Mergel, M. Achler, R. Dörner, L. Spielberger, O. Jagutzki, H. Schmidt-Böcking, J. Ullrich, H. Reich, M. Unverzagt, W. Schmitt, and R. Moshammer: 'A design study for an internal Gas-Jet Target for the Heavy-Ion Storage Ring CRYRING', Hyperfine Interactions 108, 339 (1997)

V. Mergel, R. Dörner, M. Achler, Kh. Khayyat, S. Lencinas, J. Euler, O. Jagutzki, S. Nuttgens, M. Unverzagt, L. Spielberger, W. Wu, R. Ali, J. Ullrich, H. Cederquist, A. Salin, C.J. Wood, R.E. Olson, Dz. Belkic, C.L. Cocke and H. Schmidt-Böcking: 'Intra-atomic electron-electron scattering in p-He collisions (Thomas process) investigated by cold target recoil ion momentum spectroscopy', Phys. Rev. Lett. 79, 387 (1997)

U. Thumm, A. Bárány, H. Cederquist, L. Hägg, C. J. Setterlind: 'Energy gain in collisions of highly charged ions with C⁶⁰', Phys. Rev. A 56, 4799 (1997)

N. Selberg, C. Biedermann, and H. Cederquist: 'Absolute charge exchange cross sections for the interaction between slow Xe^q+ (15≤q≤44) projectiles and neutral He, Ar and Xe', Phys. Rev. A 56, 4623 (1997)

M.O. Larsson, A. Wännström, M. Wang, A. Arnesen, F. Heijkenskjöld, A. Langereis, B. Nyström, R.W. McCullough and H. Cederquist: 'Photon emission from slow C⁴⁺-Ne collisions', Phys. Rev. A 55, 1911 (1997)

N. Selberg, C. Biedermann, and H. Cederquist: 'Semi-empirical scaling laws for electron capture at low energies', Phys. Rev. A 54, 4127 (1996)

N. Selberg, A. Bárány, C. Biedermann, C.J. Setterlind, H.Cederquist, A. Langereis, M.O. Larsson, A. Wännström, and P. Hvelplund: 'Slow collisions between highly charged ions and C60: Absolute E values and cross sections', Phys. Rev. A 53, 874 (1996)