scholarly journals Long-range versus short-range correlations in the two-neutron transfer reaction Ni64(O18,O16)Ni66

2017 ◽  
Vol 96 (4) ◽  
Author(s):  
B. Paes ◽  
G. Santagati ◽  
R. Magana Vsevolodovna ◽  
F. Cappuzzello ◽  
D. Carbone ◽  
...  
2000 ◽  
Vol 61 (6) ◽  
Author(s):  
A. Metz ◽  
Y. Eisermann ◽  
A. Gollwitzer ◽  
R. Hertenberger ◽  
B. D. Valnion ◽  
...  

2015 ◽  
Vol 86 ◽  
pp. 00024
Author(s):  
G. S. Li ◽  
Y. D. Fang ◽  
S. Mukherjee ◽  
D. Patel ◽  
M. L. Liu ◽  
...  

2014 ◽  
Vol 89 (2) ◽  
Author(s):  
D. Smalley ◽  
F. Sarazin ◽  
F. M. Nunes ◽  
B. A. Brown ◽  
P. Adsley ◽  
...  

2018 ◽  
Vol 1056 ◽  
pp. 012035
Author(s):  
J Lubian ◽  
F Cappuzzello ◽  
D Carbone ◽  
M Cavallaro ◽  
M Ermamatov ◽  
...  

Atoms ◽  
2020 ◽  
Vol 8 (4) ◽  
pp. 78
Author(s):  
Anand K. Bhatia

A scattering process can be a natural process or a process carried out in a laboratory. The scattering of particles from targets has resulted in important discoveries in physics. We discuss various scattering theories of electrons and positrons and their applications to elastic scattering, resonances, photoabsorption, excitation, and solar and stellar atmospheres. Among the most commonly employed approaches are the Kohn variational principle, close-coupling approximation, method of polarized orbitals, R-matrix formulation, and hybrid theory. In every formulation, an attempt is made to include exchange, long-range and short-range correlations, and to make the approach variationally correct. The present formulation, namely, hybrid theory, which is discussed in greater detail compared to other approximations, includes exchange, long-range correlations, and short-range correlations at the same time, and is variationally correct. It was applied to calculate the phase shifts for elastic scattering, the resonance parameters of two-electron systems, photoabsorption in two-electron systems, excitation of atomic hydrogen by an electron and positron impact, and to study the opacity of the Sun’s atmosphere. Calculations of polarizabilities, Rydberg states, and bound states of atoms are also discussed.


1968 ◽  
Vol 46 (8) ◽  
pp. 963-969 ◽  
Author(s):  
Pierre Desgrolard ◽  
J. M. Pearson ◽  
Gérard Saunier

Tabakin and Davies have shown that it is possible to fit the singlet-state nucleon–nucleon data with a potential that is smooth enough to give very small second-order terms in an ordinary perturbation–theoretic treatment of nuclear matter. However, their potential is unrealistic in that the requirements of meson theory are in no way satisfied in the long-range region. It is shown here that a potential whose long-range part conforms to the OBEP of Bryan and Scott can still be made to fit the phase shifts without increasing significantly the second-order terms. Thus, with meson theory being incapable of making an unequivocal statement about the short-range region, it will only be by resorting to the experimental evidence for short-range correlations in nuclei that one will be able to resolve the question as to whether or not an interaction as smooth as the one considered here can be regarded as "real" rather than merely "effective". In any event, the existence of such correlations cannot be inferred from the singlet nucleon–nucleon data.


1964 ◽  
Vol 50 ◽  
pp. 49-60 ◽  
Author(s):  
P.E. Cavanagh ◽  
C.F. Coleman ◽  
G.A. Gard ◽  
B.W. Ridley ◽  
J.F. Turner

2020 ◽  
Vol 3 (2) ◽  
pp. 261-267
Author(s):  
T Daniel

In this work, we have discussed a novel electron gun beam method used for the preparation of an Osmium foil sample at Daresbury Target Preparatory Laboratory, UK, which was used during the 192Os(18O, 16O)194Os 2 neutron transfer reaction at IFIN-HH Bucharest. The successful measurement of gamma energies associated with the 194Os isotopic nucleus recorded from the experiment with the high resolution HPGe detectors from this clean target of 192Os showed that this method has proven very efficient in preparing the most difficult osmium target which other methods like the sputtering, thermal evaporation could not get it prepared due to the high melting point of about 3000 0C found in the Osmium foil.


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