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Featured researches published by P. Kunz.


Physical Review Letters | 2018

Precision Measurement of the First Ionization Potential of Nobelium

P. Chhetri; H. Backe; J. Khuyagbaatar; D. Ackermann; Ch. E. Düllmann; F. Giacoppo; A. Yakushev; S. Raeder; L. Lens; A. K. Mistry; J. Even; C. Droese; Zimin Zhang; R. Ferrer; W. Lauth; P. Van Duppen; O. Kaleja; N. Lecesne; P. Kunz; Michael Block; Th. Walther; B. Cheal; M. Huyse; F. Lautenschläger; E. Minaya Ramirez; F. P. Heßberger; S. Götz; Mustapha Laatiaoui

One of the most important atomic properties governing an elements chemical behavior is the energy required to remove its least-bound electron, referred to as the first ionization potential. For the heaviest elements, this fundamental quantity is strongly influenced by relativistic effects which lead to unique chemical properties. Laser spectroscopy on an atom-at-a-time scale was developed and applied to probe the optical spectrum of neutral nobelium near the ionization threshold. The first ionization potential of nobelium is determined here with a very high precision from the convergence of measured Rydberg series to be 6.626 21±0.000 05  eV. This work provides a stringent benchmark for state-of-the-art many-body atomic modeling that considers relativistic and quantum electrodynamic effects and paves the way for high-precision measurements of atomic properties of elements only available from heavy-ion accelerator facilities.


Physical Review Letters | 2007

Nuclear charge radii of neutron-deficient lead isotopes beyond N=104 midshell investigated by in-source laser spectroscopy

H. De Witte; A. N. Andreyev; N. Barré; M. Bender; T. E. Cocolios; S. Dean; D. V. Fedorov; V. N. Fedoseyev; L. M. Fraile; S. Franchoo; V. Hellemans; Paul-Henri Heenen; K. Heyde; G. Huber; M. Huyse; H. Jeppessen; U. Köster; P. Kunz; S. R. Lesher; B. A. Marsh; I. Mukha; B. Roussière; J. Sauvage; M. D. Seliverstov; I. Stefanescu; Elisabeth Tengborn; K. Van de Vel; J. Van de Walle; P. Van Duppen; Yu. Volkov


Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms | 2008

Planar channeling experiments with electrons at the 855-MeV Mainz Microtron MAMI

H. Backe; P. Kunz; W. Lauth; A. Rueda


European Physical Journal A | 2009

Charge radii and magnetic moments of odd- A 183-189Pb isotopes

M. D. Seliverstov; A. N. Andreyev; N. Barré; A. E. Barzakh; S. Dean; H. De Witte; D. V. Fedorov; V. N. Fedoseyev; L. M. Fraile; S. Franchoo; J. Genevey; G. Huber; M. Huyse; U. Köster; P. Kunz; S. R. Lesher; B. A. Marsh; I. Mukha; B. Roussière; J. Sauvage; I. Stefanescu; K. Van de Vel; P. Van Duppen; Yu. M. Volkov


European Physical Journal D | 2007

Towards optical spectroscopy of the element nobelium (\({\sf Z }= \mathsf{102}\)) in a buffer gas cell

H. Backe; P. Kunz; W. Lauth; A. Dretzke; R. Horn; T. Kolb; M. Laatiaoui; M. Sewtz; D. Ackermann; M. Block; F. Herfurth; F. P. Heßberger; S. Hofmann; Robert B. Mann


Hyperfine Interactions | 2006

Laser Spectroscopic Investigation of the Element Fermium (Z = 100)

H. Backe; A. Dretzke; St. Fritzsche; Richard G. Haire; P. Kunz; W. Lauth; M. Sewtz; N. Trautmann


European Physical Journal D | 2007

Towards optical spectroscopy of the element nobelium (Z = 102) in a buffer gas cell

H. Backe; P. Kunz; W. Lauth; A. Dretzke; Roger Horn; Torsten Kolb; M. Laatiaoui; Michael Sewtz; D. Ackermann; Michael Block; F. Herfurth; F. P. Hessberger; Alexander Hofmann; Robert B. Mann


Hyperfine Interactions | 2006

Study of the neutron deficient 182–190Pb isotopes by simultaneous atomic- and nuclear-spectroscopy

M. D. Seliverstov; A. N. Andreyev; N. Barré; H. De Witte; D. V. Fedorov; V. N. Fedoseyev; S. Franchoo; J. Genevey; G. Huber; M. Huyse; U. Köster; P. Kunz; S. R. Lesher; B. A. Marsh; B. Roussière; J. Sauvage; P. Van Duppen; Yu. M. Volkov


European Physical Journal D | 2012

Low-field mobilities of rare-earth metals

M. Laatiaoui; H. Backe; D. Habs; P. Kunz; W. Lauth; M. Sewtz


European Physical Journal D | 2004

Efficient three-step, two-color ionization of plutonium using a resonance enhanced 2-photon transition into an autoionizing state

P. Kunz; G. Huber; G. Passler; N. Trautmann

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M. D. Seliverstov

Petersburg Nuclear Physics Institute

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M. Huyse

Katholieke Universiteit Leuven

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D. V. Fedorov

Petersburg Nuclear Physics Institute

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K. Van de Vel

Katholieke Universiteit Leuven

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