scholarly journals The equation of motion phonon method and its application in the neutron rich oxygen region

2018 ◽  
Vol 194 ◽  
pp. 01003
Author(s):  
G. De Gregorio ◽  
F. Knapp ◽  
N. Lo Iudice ◽  
P. Veselý
Keyword(s):  
Experimental Data ◽  
Strong Coupling ◽  
Satisfactory Agreement ◽  
Cross Section ◽  
Level Density ◽  
Equation Of Motion ◽  
Low Energy ◽  
Nuclear Systems ◽  
Three Body ◽  
Chiral Potential

An equation of motion phonon method, developed for even-even nuclear systems and extended to odd nuclei, is applied to 22O and to its odd neighbors 23O and 23F. A calculation using the chiral potential NNLOopt is carried out in a space encompassing up to two phonons. The computed dipole cross section in 22O and the spectra of 22O and 23O are in a satisfactory agreement with the experimental data. However, the calculation describes poorly the spectrum of 23F. This discrepancy originates from the strong coupling between the odd proton and the 22O phonons of neutron nature. This coupling pushes down in energy several states enhancing the level density at low energy. We suggest that a viable route for the solution of this problem could be the inclusion of the three-body interaction using the new chiral potential NNLOsat.

An investigation of effects of level density models and gamma ray strength functions on cross-section calculations for the production of 90Y, 153Sm, 169Er, 177Lu and 186Re therapeutic radioisotopes via (n,γ) reactions

2019 ◽  
Vol 108 (1) ◽  
pp. 11-17
Author(s):  
Mert Şekerci ◽  
Hasan Özdoğan ◽  
Abdullah Kaplan
Keyword(s):  
Experimental Data ◽  
Cross Section ◽  
Production Cross Section ◽  
Gamma Ray ◽  
Production Cross ◽  
Level Density ◽  
Experimental Studies ◽  
Level Density Models ◽  
Strength Functions ◽  
Cancer Diseases

Abstract One of the methods used to treat different cancer diseases is the employment of therapeutic radioisotopes. Therefore, many clinical, theoretical and experimental studies are being carried out on those radioisotopes. In this study, the effects of level density models and gamma ray strength functions on the theoretical production cross-section calculations for the therapeutic radioisotopes 90Y, 153Sm, 169Er, 177Lu and 186Re in the (n,γ) route have been investigated. TALYS 1.9 code has been used by employing different level density models and gamma ray strength functions. The theoretically obtained data were compared with the experimental data taken from the literature. The results are presented graphically for better interpretation.

MOMENTUM-TRANSFER STRUCTURE OF POMERON AT ACCELERATOR ENERGIES

2004 ◽  
Vol 19 (40) ◽  
pp. 3001-3010 ◽  
Author(s):  
M. KAWASAKI ◽  
T. MAEHARA ◽  
M. YONEZAWA
Keyword(s):  
Experimental Data ◽  
Differential Cross Section ◽  
Momentum Transfer ◽  
Cross Section ◽  
Mass Parameter ◽  
Low Energy ◽  
Peripheral Part ◽  
Wide Range ◽  
Diffraction Picture ◽  
Transfer Structure

A representation of Pomeron amplitude derived asymptotically in the framework of the geometrical diffraction picture is shown to be consistent with the gross feature of the experimental data of the differential cross-section of pp and [Formula: see text] scattering in the low energy region [Formula: see text] over a wide range of momentum transfer. It is found that the most peripheral part of the diffraction interaction is characterized by a mass parameter of 0.4–0.5 GeV indicating the dominance of the two-pion states.

scholarly journals Spin observables of (d,p) reactions off $^{12}$C within the Paris potential

2019 ◽  
Vol 128 (1D) ◽  
Author(s):  
Hào Viết Nhân Trần ◽  
Nguyên Khắc Hồ ◽  
Vinh Nguyễn Thành Phạm
Keyword(s):  
Experimental Data ◽  
Elastic Scattering ◽  
Satisfactory Agreement ◽  
Analyzing Powers ◽  
Spin Observables ◽  
Paris Potential ◽  
Rank One ◽  
Three Body

Deuteron elastic scattering off $^{12}$C is described in the framework of three-body Faddeev-type equations. Analyzing powers are calculated using the PEST16 potential which is a separable rank-one representation of the Paris potential. Satisfactory agreement with the experimental data is found.

Comparison ofGEANT4very low energy cross section models with experimental data in water

2010 ◽  
Vol 37 (9) ◽  
pp. 4692-4708 ◽  
Author(s):  
S. Incerti ◽  
A. Ivanchenko ◽  
M. Karamitros ◽  
A. Mantero ◽  
P. Moretto ◽  
...  
Keyword(s):  
Experimental Data ◽  
Cross Section ◽  
Low Energy

ELECTRIC DIPOLE POLARIZABILITIES OF THE TRITON AND LAMBDA HYPERTRITON

2010 ◽  
Vol 19 (02) ◽  
pp. 225-242 ◽  
Author(s):  
V. F. KHARCHENKO ◽  
A. V. KHARCHENKO
Keyword(s):  
Experimental Data ◽  
Wave Function ◽  
Electric Dipole ◽  
Ground State ◽  
Input Data ◽  
Low Energy ◽  
Dipole Polarizability ◽  
Order Of Magnitude ◽  
Three Body ◽  
Dipole Polarizabilities

A rigorous formalism for determining the electric dipole polarizability of a three-hadron bound complex in the case that the system has only one bound (ground) state has been elaborated. On its basis, by applying a model wave function that takes into account specific features of the structure of the three-body nuclei and using the known low-energy experimental data for the p–n, n–d, and Λ–d systems as input data, we have calculated the values of the electric dipole polarizabilities of the triton αE(3 H ) and lambda hypertriton [Formula: see text]. We have obtained for the triton polarizability the value 0.23 fm3. It follows from our study that the polarizability of the lambda hypertriton is close to 3 fm3 exceeding the polarizabilities of the ordinary three-nucleon nuclei by an order of magnitude.

CLUSTERING PHENOMENA IN SUPERHEAVY NUCLEAR SYSTEMS

2008 ◽  
Vol 17 (10) ◽  
pp. 2199-2207 ◽  
Author(s):  
VALERY ZAGREBAEV ◽  
WALTER GREINER
Keyword(s):  
Energy Surface ◽  
Heavy Ion ◽  
Low Energy ◽  
Transfer Reactions ◽  
Nuclear System ◽  
Local Minima ◽  
Shell Effects ◽  
Nuclear Systems ◽  
Three Body ◽  
Enhanced Yield

Dynamics of heavy-ion low energy damped collisions is studied within the model based on the Langevin type equations. Shell effects on the multi-dimensional potential energy surface play an important role in these reactions. This leads to several local minima on the fission path of heavy nucleus — so called isomeric states which are nothing else but the two-cluster configurations with magic or semi-magic cores surrounded with a certain number of shared nucleons. In a giant nuclear system (formed, for example, in U + U collision) the three-body clustering configurations may also appear. Enhanced yield of the nuclides far from the projectile and target masses was found in the multi-nucleon transfer reactions due to the shell effects. It suggests that the low-energy damped collisions of transactinide nuclei may be used as an alternative way for the production of surviving superheavy long-living neutron-rich nuclei.

scholarly journals UNIVERSALITY IN THE ELECTROPRODUCTION OF VECTOR MESONS

2011 ◽  
Vol 26 (13) ◽  
pp. 2125-2141 ◽  
Author(s):  
V. L. BALTAR ◽  
H. G. DOSCH ◽  
E. FERREIRA
Keyword(s):  
Experimental Data ◽  
Vector Meson ◽  
Strong Coupling ◽  
Cross Section ◽  
Elastic Cross Section ◽  
Strong Coupling Constant ◽  
Coupling Constant ◽  
Vector Mesons ◽  
Infrared Behavior

We study universality in the data of the electroproduction of vector mesons, using as guideline the results of a unified nonperturbative approach which reproduces well the available experimental data. After the extraction of factors that are specific of each vector meson, we arrive at a reduced integrated elastic cross-section which is universal. Our analysis suggests a finite infrared behavior for the strong coupling constant.

THE ν - N CHARGED CURRENT CROSS-SECTION AT LOW ENERGY

2001 ◽  
Vol 16 (36) ◽  
pp. 2335-2343
Author(s):  
KLARA GOIZ HERNÁNDEZ ◽  
J. J. GODINA NAVA
Keyword(s):  
Experimental Data ◽  
Energy Range ◽  
Cross Section ◽  
Form Factors ◽  
Low Energy ◽  
Charged Current ◽  
Deep Underground ◽  
The Cross

We reanalyze the neutrino–nucleon charged current (CC) cross-section with particular attention to the energy range Eν ≤ 10 GeV . We use new experimental data to obtain the form factors involved in the calculation of the cross-section, and discuss possible consequences for the interpretation of the measurements of the atmospheric fluxes obtained by deep underground detectors.

Electron Attachment to Metallic Clusters

2007 ◽  
Vol 555 ◽  
pp. 159-164
Author(s):  
A.R. Tančić ◽  
M. Davidović ◽  
S. Sredić
Keyword(s):  
Experimental Data ◽  
Cross Section ◽  
Electron Attachment ◽  
Low Energy ◽  
New Materials ◽  
Metallic Clusters ◽  
Low Energy Electrons ◽  
Collective Resonance ◽  
Attachment Cross Section

The calculations of the low-energy attachment cross section to metallic clusters are investigated. Low energy electrons are taken as slow enough to excite a giant dipole collective resonance within the cluster. The calculations are more refined than the earlier ones – they do not depend on the experimental data, and we improved RPAE calculation of the collective resonance in the cluster. The results are interesting for the nano-region and designing of new materials.

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