Energy and range focusing of in-flight separated exotic nuclei – A study for the energy-buncher stage of the low-energy branch of the Super-FRS

Author(s):  
C. Scheidenberger ◽  
H. Geissel ◽  
M. Maier ◽  
G. Münzenberg ◽  
M. Portillo ◽  
...  
Keyword(s):  
2014 ◽  
Vol 89 (5) ◽  
Author(s):  
V. I. Zagrebaev ◽  
B. Fornal ◽  
S. Leoni ◽  
Walter Greiner

2010 ◽  
Vol 25 (21n23) ◽  
pp. 1779-1782 ◽  
Author(s):  
NADIA TSONEVA ◽  
HORST LENSKE

Systematic studies of dipole and other multipole excitations in stable and exotic nuclei are discussed theoretically. Exploring the relation of the strengths of low-energy dipole and quadrupole pygmy resonances to the thickness of the neutron (proton) skin a close connection between static and dynamic properties of the nucleus is observed. The fine structure of low-energy dipole strength in 138 Ba nucleus is revealed from E1 and spin-flip M1 strengths distributions.


2018 ◽  
Vol 177 ◽  
pp. 03004
Author(s):  
M. Stepanov ◽  
L. Imasheva ◽  
B. Ishkhanov ◽  
T. Tretyakova

Excited states in low-energy spectra in nuclei near 208Pb are considered. The pure (j = 9/2)n configuration approximation with delta-force is used for ground state multiplet calculations. The multiplet splitting is determined by the pairing energy, which can be defined from the even-odd straggering of the nuclear masses. For the configurations with more than two valence nucleons, the seniority scheme is used. The results of the calculations agree with the experimental data for both stable and exotic nuclei within 0.06-6.16%. Due to simplicity and absence of the fitted parameters, the model can be easily applied for studies of nature of the excited states in a wide range of nuclei.


2019 ◽  
Vol 55 (6) ◽  
Author(s):  
N. R. Ma ◽  
L. Yang ◽  
C. J. Lin ◽  
H. Yamaguchi ◽  
D. X. Wang ◽  
...  

2008 ◽  
Vol 807 (1-2) ◽  
pp. 1-10 ◽  
Author(s):  
M. Grasso ◽  
E. Khan ◽  
J. Margueron ◽  
N. Van Giai

Author(s):  
A. Garg ◽  
W.A.T. Clark ◽  
J.P. Hirth

In the last twenty years, a significant amount of work has been done in the theoretical understanding of grain boundaries. The various proposed grain boundary models suggest the existence of coincidence site lattice (CSL) boundaries at specific misorientations where a periodic structure representing a local minimum of energy exists between the two crystals. In general, the boundary energy depends not only upon the density of CSL sites but also upon the boundary plane, so that different facets of the same boundary have different energy. Here we describe TEM observations of the dissociation of a Σ=27 boundary in silicon in order to reduce its surface energy and attain a low energy configuration.The boundary was identified as near CSL Σ=27 {255} having a misorientation of (38.7±0.2)°/[011] by standard Kikuchi pattern, electron diffraction and trace analysis techniques. Although the boundary appeared planar, in the TEM it was found to be dissociated in some regions into a Σ=3 {111} and a Σ=9 {122} boundary, as shown in Fig. 1.


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