CALCULATIONS OF FUSION-EVAPORATION CROSS SECTIONS IN THE 48Ca + 206Pband48Ca + 208Pb REACTIONS

By using a unique set of experimental data on (1n, 2n, 3n and 4n) fusion-evaporation cross sections for 48 Ca + 206 Pb and 48 Ca + 208 Pb reactions, measured by Oganessian et al., we have tested the conventional Bohr-Wheeler description of the competition between evaporation and fission in these reactions. Level densities in both, the equilibrium and saddle-point configurations were calculated using the Reisdorf-Ignatyuk prescription. Strutinsky shell corrections of Möller et al. were used for the equilibrium, and zero shell corrections were assumed for the saddle-point configuration. The model does not contain adjustable parameters.

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Relativistic B-Spline R-Matrix Calculations for Electron Collisions with Ytterbium

Atoms ◽

10.3390/atoms9030047 ◽

2021 ◽

Vol 9 (3) ◽

pp. 47

Author(s):

Kathryn R. Hamilton ◽

Klaus Bartschat ◽

Oleg Zatsarinny

Keyword(s):

Experimental Data ◽

Electron Scattering ◽

Cross Sections ◽

Matrix Method ◽

Model Potential ◽

Electron Collisions ◽

R Matrix ◽

B Spline ◽

Potential Approach

We have applied the full-relativistic Dirac B-Spline R-matrix method to obtain cross sections for electron scattering from ytterbium atoms. The results are compared with those obtained from a semi-relativistic (Breit-Pauli) model-potential approach and the few available experimental data.

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HADRON SPIN-FLIP AMPLITUDE AND SLOPE OF DIFFERENTIAL CROSS-SECTIONS

Modern Physics Letters A ◽

10.1142/s0217732399000262 ◽

1999 ◽

Vol 14 (03) ◽

pp. 223-230 ◽

Cited By ~ 8

Author(s):

O. V. SELYUGIN

Keyword(s):

Experimental Data ◽

Cross Sections ◽

Differential Cross ◽

Scattering Amplitude ◽

Previous Analysis ◽

Differential Cross Sections ◽

Spin Flip ◽

Flip Amplitude

A possibility to obtain restrictions of the magnitude of the elastic spin-flip hadron scattering amplitude from accurately measured experimental data on the differential cross-sections of elastic hadron–hadron scattering is shown. Appropriate estimations confirm the previous analysis of experimental data at [Formula: see text] GeV and a probable contribution of the hadron spin-flip amplitude.

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Cross sections for d-3H neutron interactions with samarium isotopes

Radiochimica Acta ◽

10.1515/ract-2016-0001 ◽

2016 ◽

Vol 104 (8) ◽

Cited By ~ 2

Author(s):

Junhua Luo ◽

Chunlei Wu ◽

Li Jiang ◽

Long He

Keyword(s):

Experimental Data ◽

Neutron Flux ◽

Cross Sections ◽

Theoretical Calculations ◽

Nuclear Model ◽

Activation Technique ◽

Incident Neutron ◽

Reaction Threshold ◽

Talys 1.6 ◽

The Cross

Abstract:The cross sections for (n,x) reactions on samarium isotopes were measured at (d-T) neutron energies of 13.5 and 14.8 MeV with the activation technique. Samples were activated along with Nb and Al monitor foils to determine the incident neutron flux. Theoretical calculations of excitation functions were performed using the nuclear model codes TALYS-1.6 and EMPIRE-3.2 Malta with default parameters, at neutron energies varying from the reaction threshold to 20 MeV. The results were discussed and compared with experimental data found in the literature. At neutron energies 13.5 and 14.8 MeV, the cross sections of the

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A PANORAMA OF CDCC CALCULATIONS FOR DEUTERON INDUCED REACTIONS: FROM ELASTIC CROSS SECTIONS TO INELASTIC AND TRANSFER ONES

International Journal of Modern Physics E ◽

10.1142/s0218301311019040 ◽

2011 ◽

Vol 20 (04) ◽

pp. 953-957 ◽

Cited By ~ 3

Author(s):

P. HUU-TAI CHAU

Keyword(s):

Experimental Data ◽

Cross Sections ◽

Deformed Nuclei ◽

Coupled Channels ◽

The Continuum

An overview of calculations performed within the Continuum Discretized Coupled Channels (CDCC) approach for deuteron induced reactions is given. We briefly present an extension of the CDCC formalism which accounts for the target excitations allowing us to determine ( d , d ') cross sections off deformed nuclei. We compare some calculated inelastic cross sections with experimental data. Then it is shown that the CDCC formalism can also be a useful tool to determine ( d , p ) cross sections. This point is illustrated with 54 Cr ( d , p )55 Cr reactions.

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New analysis of the low-energy π±p differential cross-sections of the CHAOS Collaboration

International Journal of Modern Physics E ◽

10.1142/s0218301315500500 ◽

2015 ◽

Vol 24 (07) ◽

pp. 1550050 ◽

Cited By ~ 2

Author(s):

E. Matsinos ◽

G. Rasche

Keyword(s):

Experimental Data ◽

Cross Sections ◽

Differential Cross ◽

Form Factors ◽

Partial Wave Analysis ◽

Meson Mass ◽

Data Sets ◽

Differential Cross Sections ◽

Pion Nucleon ◽

Meson Factory

In a previous paper, we reported the results of a partial-wave analysis (PWA) of the pion–nucleon (πN) differential cross-sections (DCSs) of the CHAOS Collaboration and came to the conclusion that the angular distribution of their π+p data sets is incompatible with the rest of the modern (meson factory) database. The present work, re-addressing this issue, has been instigated by a number of recent improvements in our analysis, namely regarding the inclusion of the theoretical uncertainties when investigating the reproduction of experimental data sets on the basis of a given "theoretical" solution, modifications in the parametrization of the form factors of the proton and of the pion entering the electromagnetic part of the πN amplitude, and the inclusion of the effects of the variation of the σ-meson mass when fitting the ETH model of the πN interaction to the experimental data. The new analysis of the CHAOS DCSs confirms our earlier conclusions and casts doubt on the value for the πN Σ term, which Stahov, Clement and Wagner have extracted from these data.

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Pseudopotential calculations of elastic scattering of electrons by helium atoms in the range 0–20 eV

Canadian Journal of Physics ◽

10.1139/p90-016 ◽

1990 ◽

Vol 68 (1) ◽

pp. 104-110 ◽

Cited By ~ 6

Author(s):

B. Plenkiewicz ◽

P. Plenkiewicz ◽

J.-P. Jay-Gerin

Keyword(s):

Experimental Data ◽

Elastic Scattering ◽

Momentum Transfer ◽

Cross Sections ◽

Theoretical Calculations ◽

Incident Electron ◽

Elastic Electron ◽

Scattering System ◽

Helium Atoms ◽

Pseudopotential Calculations

Our earlier pseudopotential calculations on electrons colliding with argon and krypton are extended to consider the elastic electron–helium scattering system. In this paper, we present detailed results for phase shifts, differential, total, and momentum-transfer cross sections for this system for incident electron energies in the range from 0 to 20 eV. These agree very well with existing experimental data and with other theoretical calculations.

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Elastic scattering and breakup reactions with light proton- and neutron-rich exotic nuclei

EPJ Web of Conferences ◽

10.1051/epjconf/201819407002 ◽

2018 ◽

Vol 194 ◽

pp. 07002

Author(s):

M.K. Gaidarov ◽

V.K. Lukyanov ◽

D.N. Kadrev ◽

E.V. Zemlyanaya ◽

A.N. Antonov ◽

...

Keyword(s):

Experimental Data ◽

Elastic Scattering ◽

Cross Sections ◽

Cluster Model ◽

Microscopic Analysis ◽

High Energy ◽

The Real ◽

Optical Potentials ◽

Generator Coordinate ◽

Energy Approximation

A microscopic analysis of the optical potentials (OPs) and cross sections of elastic scattering of 8B on 12C, 58Ni, and 208Pb targets at energies 20 < E < 170 MeV and 12,14Be on 12C at 56 MeV/nucleon is carried out. The real part of the OP is calculated by a folding procedure and the imaginary part is obtained on the base of the high-energy approximation (HEA). The density distributions of 8B evaluated within the variational Monte Carlo (VMC) model and the three-cluster model (3CM) are used to construct the potentials. The 14Be densities obtained in the framework of the the generator coordinate method (GCM) are used to calculate the optical potentials, while for the same purpose both the VMC model and GCM densities of 12Be are used. In the hybrid model developed and explored in our previous works, the only free parameters are the depths of the real and imaginary parts of OP obtained by fitting the experimental data. The use of HEA to estimate the imaginary OP at energies just above the Coulomb barrier is discussed. In addition, cluster model, in which 8B consists of a p-halo and the 7Be core, is applied to calculate the breakup cross sections of 8B nucleus on 9Be, 12C, and 197Au targets, as well as momentum distributions of 7Be fragments. A good agreement of the theoretical results with the available experimental data is obtained. It is concluded that the reaction studies performed in this work may provide supplemental information on the internal spatial structure of the proton- and neutron-halo nuclei.

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COMPARISON AND TESTING OF METHODS FOR E1 STRENGTH CALCULATIONS

International Journal of Modern Physics E ◽

10.1142/s0218301306004259 ◽

2006 ◽

Vol 15 (02) ◽

pp. 387-392 ◽

Cited By ~ 3

Author(s):

V. A. PLUJKO ◽

I. M. KADENKO ◽

O. A. BEZSHYYKO ◽

L. O. GOLINKA-BEZSHYYKO ◽

O. I. DAVIDOVSKAYA

Keyword(s):

Experimental Data ◽

Cross Sections ◽

Strength Function ◽

Atomic Nuclei ◽

Radiative Strength Function ◽

Function Models ◽

Stability Line

Extensive comparisons of E1 strength calculations within framework of the various methods are performed in atomic nuclei near beta-stability line. Photoabsorption cross-sections are calculated and compared with experimental data to test radiative strength function models.

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