N
N. Frömmgen
Researcher at University of Mainz
Publications - 22
Citations - 874
N. Frömmgen is an academic researcher from University of Mainz. The author has contributed to research in topics: Hyperfine structure & Spectroscopy. The author has an hindex of 13, co-authored 22 publications receiving 726 citations.
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Journal ArticleDOI
Unexpectedly large charge radii of neutron-rich calcium isotopes
R. F. Garcia Ruiz,Mark Bissell,Mark Bissell,Klaus Blaum,Andreas Ekström,Andreas Ekström,N. Frömmgen,Gaute Hagen,M. Hammen,Kai Hebeler,Jason D. Holt,Gustav R. Jansen,Gustav R. Jansen,Magda Kowalska,K. Kreim,Witold Nazarewicz,Witold Nazarewicz,Witold Nazarewicz,Rainer Neugart,Gerda Neyens,Wilfried Nörtershäuser,Wilfried Nörtershäuser,Thomas Papenbrock,Thomas Papenbrock,J. Papuga,Achim Schwenk,Achim Schwenk,J. Simonis,Klaus Wendt,Klaus Wendt,Deyan T. Yordanov,Deyan T. Yordanov +31 more
TL;DR: In this article, the authors present the first measurements of the charge radii of 49,51,52Ca, obtained from laser spectroscopy experiments at ISOLDE, CERN.
Journal ArticleDOI
Spins, Electromagnetic Moments, and Isomers of 107-129Cd
Deyan T. Yordanov,Deyan T. Yordanov,D. L. Balabanski,Jacek Bieron,Mark Bissell,Klaus Blaum,I. Budinčević,Stephan Fritzsche,N. Frömmgen,Georgi P. Georgiev,Ch. Geppert,M. Hammen,Magda Kowalska,K. Kreim,A. Krieger,Rainer Neugart,Wilfried Nörtershäuser,J. Papuga,Stefan E. Schmidt +18 more
TL;DR: The neutron-rich isotopes of cadmium up to the N=82 shell closure have been investigated by high-resolution laser spectroscopy and one essential feature of the spherical shell model is unambiguously confirmed by a linear increase of the 11/2(-) quadrupole moments.
Journal ArticleDOI
Nuclear Charge Radius of 12Be
A. Krieger,Klaus Blaum,Mark Bissell,N. Frömmgen,Ch. Geppert,M. Hammen,K. Kreim,Magda Kowalska,J. Krämer,T. Neff,Rainer Neugart,Gerda Neyens,Wilfried Nörtershäuser,C. Novotny,R. Sánchez,Deyan T. Yordanov +15 more
TL;DR: In this paper, the nuclear charge radius of the one-neutron halo isotope Be was determined using the technique of collinear laser spectroscopy on the $2{s} 1/2]-ensuremath{\rightarrow}2{p}{1/2,3/2}$ transition in the ${\mathrm{Be}}+}$ ion.
Journal ArticleDOI
Collinear laser spectroscopy of atomic cadmium
N. Frömmgen,Dimiter L. Balabanski,Mark Bissell,Jacek Bieron,Klaus Blaum,Bradley Cheal,Kieran Flanagan,Stephan Fritzsche,Stephan Fritzsche,Christopher Geppert,Christopher Geppert,M. Hammen,Magdalena Kowalska,K. Kreim,A. Krieger,A. Krieger,Rainer Neugart,Rainer Neugart,Gerda Neyens,M. Rajabali,Wilfried Nörtershäuser,Wilfried Nörtershäuser,J. Papuga,Deyan T. Yordanov,Deyan T. Yordanov,Deyan T. Yordanov +25 more
TL;DR: In this paper, the hyperfine structure anomaly for isotopes with s1/2 and d5/2 nuclear ground states and isomeric h11/2 states is evaluated and a linear relationship is observed for all nuclear states except s 1/2.
Journal ArticleDOI
From Calcium to Cadmium: Testing the Pairing Functional through Charge Radii Measurements of Cd 100 − 130
M. Hammen,Wilfried Nörtershäuser,Wilfried Nörtershäuser,D. L. Balabanski,Mark Bissell,Mark Bissell,Klaus Blaum,I. Budinčević,Bradley Cheal,Kieran Flanagan,N. Frömmgen,Georgi P. Georgiev,Ch. Geppert,Ch. Geppert,Magda Kowalska,K. Kreim,A. Krieger,A. Krieger,Witold Nazarewicz,Rainer Neugart,Rainer Neugart,Gerda Neyens,Gerda Neyens,J. Papuga,Paul-Gerhard Reinhard,Mustafa Rajabali,Stefan E. Schmidt,Stefan E. Schmidt,Deyan T. Yordanov,Deyan T. Yordanov,Deyan T. Yordanov +30 more
TL;DR: The radii show a smooth parabolic behavior on top of a linear trend and a regular odd-even staggering across the almost complete sdgh shell and show a remarkably good agreement in the trend as well as the total nuclear charge radius.