scholarly journals Elastic and inelastic scattering of 15N ions by 13C nuclei at energy 84 MeV

2021 ◽  
Vol 22 (1) ◽  
pp. 10-18
Author(s):  
A.T. Rudchik ◽  
◽  
A.A. Rudchik ◽  
O.E. Kutsyk ◽  
K. Rusek ◽  
...  
Keyword(s):  
Elastic Scattering ◽  
Inelastic Scattering ◽  
Transfer Reactions ◽  
Coupling Scheme ◽  
Elastic And Inelastic Scattering ◽  
Deformation Parameters ◽  
Cluster Transfer ◽  
Reaction Channels ◽  
Potential Parameters ◽  
Coupled Reaction

New experimental data of the 15N + 13C elastic and inelastic scattering were obtained at the energy Elab(15N) = 84 MeV. The data were analyzed within the coupled-reaction-channels method. The elastic and inelastic scattering of nuclei 15N + 13С as well as the more important nucleon and cluster transfer reactions were included in the channels-coupling scheme. The WS potential parameters for the 15N + 13С nuclei interactions in ground and excited states as well as deformation parameters of these nuclei were deduced. The contributions of one- and two-step transfers in the 15N + 13C elastic and inelastic scattering were estimated. The results of the 15N + 13С elastic scattering at the energy Elab(15N) = 84 MeV, obtained in this work, were compared with that of the 15N + 12С elastic scattering at the energy Elab(15N) = 81 MeV.

scholarly journals 12С(15N,14N)13C reaction mechanisms at energy 81 MeV

2020 ◽  
Vol 21 (4) ◽  
pp. 295-301
Author(s):  
A.T. Rudchik ◽  
◽  
A.A. Rudchik ◽  
O.E. Kutsyk ◽  
K. Rusek ◽  
...  
Keyword(s):  
Experimental Data ◽  
Cross Sections ◽  
Nuclear Interaction ◽  
Reaction Cross ◽  
Coupling Scheme ◽  
Spectroscopic Factors ◽  
Reaction Data ◽  
Reaction Channels ◽  
Potential Parameters ◽  
Coupled Reaction

The new experimental data of the 12С(15N,14N)13С reaction cross-sections at the energy Еlab(15N) = 81 MeV were measured for the ground and excited states of 14N and 13C nuclei. The experimental data were analyzed within the coupled-reaction-channels method (CRC) using channels-coupling scheme with the 15N + 12С elastic scattering and one- as well as two-step transfers of nucleons and clusters performing CRC-calculations with the Woods - Saxon potentials (WS) for the entrance and exit reaction channels. The WS potential parameters for the 12С + 15N nuclear interaction were taken from the previously studied elastic and inelastic scattering of 15N ions by 12С nuclei at the energy 81 MeV, and the WS potential parameters for the 14N + 13С reaction exit channel were deduced from fitting of the 12С(15N,14N)13C reaction data. The spectroscopic factors (amplitudes) of transferred in the reaction nucleons and clusters, used in the CRC-calculations, were computed within translational invariant shell model of 1p-shell. It was found that transfers of neutrons (n) and deuterons (d) dominate in this reaction. Multi-step transfers of nucleons and clusters give small contributions to the reaction data.

scholarly journals Mechanisms of 14C(11B,10B)15C reaction at energy 45 МеV for ground and excited states of 10B and 15C nuclei

2020 ◽  
Vol 21 (3) ◽  
pp. 231-238
Author(s):  
S.Yu. Mezhevych ◽  
◽  
A.T. Rudchik ◽  
K. Rusek ◽  
K.W. Kemper ◽  
...  
Keyword(s):  
Experimental Data ◽  
Excited States ◽  
Cross Sections ◽  
Reaction Cross ◽  
Reaction Channel ◽  
Coupling Scheme ◽  
Reaction Channels ◽  
Potential Parameters ◽  
Coupled Reaction ◽  
Isotopic Effects

New experimental data for differential cross-sections of the reaction 14C(11B,10B)15C at Еlab(11B) = 45 MeV were obtained for transitions to the ground and excited states of the exit reaction channel nuclei. The experimental data were analyzed within the coupled-reaction-channels method (CRC). The 14C + 11B elastic scattering channel as well as channels for one- and two-step transfers of nucleons and clusters were included in the coupling scheme. The Woods - Saxon (WS) potential was used in the CRC-calculations for the entrance reaction channel with the parameters deduced previously from the analysis of the experimental data of 11B + 14C elastic and inelastic scattering, whereas the WS potential for the exit 15C + 10B reaction channel was deduced from the fit of CRC cross-sections to the 14C(11B,10B)15C reaction experimental data. Needed for CRC-calculations spectroscopic amplitudes (factors) of the nucleons and clusters transferred in the reaction were calculated within the translational-invariant shell model. The mechanisms for one- and two-step transfers of nucleons and clusters were investigated in this reaction. The 15C + 10B potential parameters were deduced, and comparisons of the CRC reaction cross-sections calculated with the 15C + 10B and 12,13C + 10B potential parameters were performed. The differences between these CRC calculations were observed, e.g. "isotopic effects" were observed for the potentials of 10B interaction with 12,13,15C carbon isotopes.

Optisches Modell für die Streuung von K--Mesonen an Kernen

1957 ◽  
Vol 12 (12) ◽  
pp. 947-955 ◽  
Author(s):  
P. Mittelstaedt
Keyword(s):  
Angular Distribution ◽  
Elastic Scattering ◽  
Energy Distribution ◽  
Inelastic Scattering ◽  
Optical Potential ◽  
Optical Model ◽  
Experimental Results ◽  
The Real ◽  
Elastic And Inelastic Scattering ◽  
Plate Group

The elastic and inelastic scattering of K--Mesons by complex nuclei are described by means of a phenomenological optical model. The real and the imaginary parts of the optical potential are determined by a comparison with the experimental results of the Goettingen and of the Bern plate group from the angular distribution of the elastic scattering and also from the energy distribution of the inelastically scattered K--Mesons by means of the GoLDBERGER-method.

Coupled reaction channels effects in the elastic scattering ofS32,36+58,64Ni

1990 ◽  
Vol 41 (3) ◽  
pp. 1018-1030 ◽  
Author(s):  
A. M. Stefanini ◽  
A. Tivelli ◽  
G. Montagnoli ◽  
D. R. Napoli ◽  
D. Bonamini ◽  
...  
Keyword(s):  
Elastic Scattering ◽  
Reaction Channels ◽  
Coupled Reaction

Comparison of Neutron Elastic and Inelastic Scattering from Fused Quartz, Cab-O-Sil and Aerogel

1989 ◽  
Vol 166 ◽  
Author(s):  
John H. Root ◽  
William J. L. Buyers ◽  
John H. Page ◽  
Dale W. Schaefer ◽  
C. J. Brinker
Keyword(s):  
Elastic Scattering ◽  
Inelastic Scattering ◽  
Neutron Scattering ◽  
Density Of States ◽  
Neutron Inelastic Scattering ◽  
Elastic And Inelastic Scattering ◽  
Structure And Dynamics ◽  
Anharmonic Effects ◽  
Fused Quartz ◽  
Temperature Dependences

ABSTRACTNeutron scattering experiments have been performed to study the structure and dynamics of three preparations of silica: a dense glass (fused quartz), a flame-hydrolyzed aggregate (Cab-O-Sil, grade M5) and a polymeric aerogel. The experiments were performed on the three materials at temperatures selected from 300, 77 and 4.2 K. Neutron inelastic scattering was measured at Q = 2.5, 2.9 and 4.0 Å−1.The elastic scattering indicates a systematic decrease in positional correlations on progressing from fused quartz through Cab-O-Sil to aerogel. The inelastic scattering was analyzed with the Buchenau model [1] to obtain the sample, Q and temperature dependences of the density of states, g(v). In the aerogel g(v) increases with temperature at frequencies greater than 1.5 THz and is enhanced at Q = 2.5 Å−1. Thus a complete explanation of the inelastic scattering from aerogels must account for multiphonon processes, local antiphase motions and anharmonic effects.

STRONG ABSORPTION MODEL STUDIES OF PION-NUCLEUS SCATTERING AROUND THE Δ RESONANCE

2004 ◽  
Vol 13 (02) ◽  
pp. 505-527 ◽  
Author(s):  
DIPIKA RANI SARKER ◽  
L. BEGUM ◽  
MD. A. RAHMAN ◽  
H. M. SEN GUPTA
Keyword(s):  
Angular Distribution ◽  
Elastic Scattering ◽  
Inelastic Scattering ◽  
Strong Absorption ◽  
Distribution Data ◽  
Absorption Model ◽  
Model Studies ◽  
Deformation Parameters ◽  
Nucleus Scattering

Angular distribution data on the elastic scattering of pions are studied on several nuclei around the Δ resonance in terms of the three-parameter strong absorption model of Frahn and Venter. The parameters thus obtained are used in the analyses of inelastic scattering of pions leading to the lowest as well as higher lying 2+ and 3- states, and the corresponding deformation parameters are extracted.

Airy minima in 4He +28Si elastic and inelastic scattering

2020 ◽  
Vol 35 (19) ◽  
pp. 2050159
Author(s):  
Yu. A. Berezhnoy ◽  
A. S. Molev
Keyword(s):  
Elastic Scattering ◽  
Inelastic Scattering ◽  
Energy Dependence ◽  
Cross Sections ◽  
Differential Cross ◽  
Second Order ◽  
Differential Cross Sections ◽  
First Order ◽  
Elastic And Inelastic Scattering ◽  
Matrix Description

We present the results of the [Formula: see text]-matrix description of the [Formula: see text] elastic and inelastic scattering differential cross-sections between 40 and 240 MeV with allocation of Airy minima of various orders. The first-order Airy minima have been unambiguously identified in the differential cross-sections for elastic scattering and inelastic scattering to the first [Formula: see text] state of [Formula: see text] at energies [Formula: see text] MeV, and the second-order Airy minima — at [Formula: see text] MeV. The angular positions of these minima obey an inverse dependence on energy. The intensities of nuclear refraction and absorption also obey the same energy dependence.

Spectroscopic information of 6Li from elastic scattering of deuterons, 3He and 4He by 6Li

2014 ◽  
Vol 23 (08) ◽  
pp. 1450041
Author(s):  
A. Amar
Keyword(s):  
Elastic Scattering ◽  
Cross Sections ◽  
Optical Potential ◽  
Wide Energy Range ◽  
Spectroscopic Information ◽  
Wide Energy ◽  
Double Folding ◽  
Potential Parameters ◽  
Coupled Reaction ◽  
Good Agreement

The elastic scattering of deuterons, 3 He and 4 He on 6 Li at different incident energies have been analyzed in the framework of the optical model (OM) using ECIS88 as well as SPI GENOA codes. The optical potential parameters were extracted in the phenomenological treatment. A good agreement between theoretical and experimental differential cross-sections was obtained in whole angular range. Parameters for real part of potential have been also calculated microscopically with double-folding model for the d, 3 He and 4 He scattering, respectively, using DFPOT code. The elastic transfer mechanism has been studied by coupled reaction channel (CRC) method using FRESCO code. Spectroscopic amplitudes of 6 Li ≡ t + 3 He and 6 Li ≡ α + d configurations have been extracted from d, 3 He and 4 He scattering on 6 Li at wide energy range. A comparison between spectroscopic amplitudes obtained from deuteron and α elastically scattering from 6 Li has been made. The extracted spectroscopic amplitudes of 6 Li ≡ 4 He + d( SF = SA 2) from 6 Li (d, 6 Li )d and 6 Li (α, 6 Li )α are not the same as expected theoretically.

A STUDY OF SCATTERING OF ALPHA PARTICLES FROM NUCLEI

2010 ◽  
Vol 19 (11) ◽  
pp. 2167-2180 ◽  
Author(s):  
DIPIKA RANI SARKER ◽  
MD. A RAHMAN ◽  
H. M. SEN GUPTA
Keyword(s):  
Elastic Scattering ◽  
Inelastic Scattering ◽  
Nuclear Interaction ◽  
Alpha Particles ◽  
Distribution Data ◽  
Absorption Model ◽  
Deformation Parameters ◽  
Good Account ◽  
Parameter Values ◽  
Best Fit

The angular distribution data for the elastic scattering of 100–172.5 MeV isoscalar alpha particles from several nuclei between 16 O and 208 Pb are studied within the framework of the strong absorption model due to Frahn and Venter. The best fit parameter values of the nuclear interaction are determined. These are then used to analyze the inelastic scattering of alpha particles leading to the excitation of the 2+ and 3- collective states in the target nuclei and the corresponding deformation parameters are extracted. A reasonably good account of both elastic and inelastic scattering is given by the same set of parameter values derived from the analyses of the elastic scattering.

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