M. Neffgen
University of Bonn
9 Papers
47 Citations
M. Neffgen is an academic researcher from University of Bonn. The author has contributed to research in topics: Dipole & Proton. The author has an hindex of 7, co-authored 9 publications.
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Papers
Shears bands in 201Pb and 202Pb
G. Baldsiefen,P. Maagh,H. Hübel,W. Korten,S. Chmel,M. Neffgen,W. Pohler,H. Grawe,K. H. Maier,K. M. Spohr,R. Schubart,S. Frauendorf,H.J. Maier +12 more
TL;DR: In this article, high-spin states in 201 Pb and 202 Pb have been investigated using in-beam γ-ray spectroscopic techniques, and seven regular sequences of enhanced dipole transitions, with weak E2 crossovers in some cases, have been found, one of which is firmly connected to low-lying levels in 200 Pb.
28
Lifetimes of the superdeformed band in 192Hg
P. Willsau,A. Korichi,F. Hannachi,H. Hübel,W. Korten,M. Neffgen,F. Azaiez,C. Bourgeois,Josette Duprat,N. Perrin,N. Poffé,H. Sergolle,G. Bastin,I. Deloncle,B. J. P. Gall,M. Kaci,M. G. Porquet,C. Schück,J. Simpson,R. Duffait,Y. Le Coz,M. Meyer,N. Redon,A. G. Smith,C. W. Beausang,Malcolm J. Joyce,E. S. Paul,J.F. Sharpey-Schafer,R. M. Clark,R. Wadsworth,I. Ahmad,M. P. Carpenter,R. G. Henry,R. V. F. Janssens,T. L. Khoo,T. Lauritsen,J. R. Hughes,H.J. Maier +37 more
TL;DR: In this paper, the lifetime of the superdeformed band in 192Hg was measured using the Doppler-shift attenuation and the recoil distance methods for the high-spin and low-spin regions, respectively.
25
Shears bands and their links to spherical states in 197Pb
G. Baldsiefen,S. Chmel,H. Hübel,W. Korten,M. Neffgen,W. Pohler,U. J. van Severen,J. Heese,H. Kluge,K. H. Maier,K. M. Spohr +10 more
TL;DR: In this article, a reordering of the transitions in the previously reported irregular band leads to a regular sequence with a band crossing, interpreted in terms of "shears bands" within the tilted-axis cranking model.
24
"Shears bands" in Pb nuclei - a new nuclear structure effect
W. Korten,G. Baldsiefen,M. Neffgen,H. Hübel,S. Chmel,W. Pohler,U. J. van Severen,P. Willsau,S. Frauendorf,Jie Meng,H. Grawe,J. Heese,H. Kluge,K. H. Maier,R. Schubart,K. M. Spohr +15 more
TL;DR: In the mass region around A = 190-200, a large number of regular dipole sequences have recently been found as discussed by the authors, and the gain in angular momentum may not be created by collective rotation as is usual for more deformed nuclei, but stems from aligning the proton and neutron spins in the direction of the total spin axis.
2
Lifetimes of a dipole cascade in 192 Hg
P. Willsau,M. Neffgen,Y. Le Coz,H. Hübel,W. Korten,F. Hannachi,A. Korichi,M. G. Porquet,M. Kaci,N. Redon,Marco Meyer,C. W. Beausang,E. S. Paul,Jayne Simpson,J. R. Hughes +14 more
TL;DR: In this article, the average reduced transition probabilities, deduced from the lifetimes of ten states with spins between 23 and 32 have been measured in a cascade of dipole transitions in 192Hg using the Doppler-shift recoil distance method.