Determination of single neutron spectroscopic factor of doubly shell closed, neutron shell closed and neutron-rich nuclei through (d,p) reaction

2020 ◽  
Vol 29 (06) ◽  
pp. 2050030
Author(s):  
A. Vinayak ◽  
M. M. Hosamani ◽  
P. N. Patil ◽  
N. M. Badiger
Keyword(s):  
Cross Sections ◽  
Differential Cross ◽  
Spectroscopic Factor ◽  
Center Of Mass ◽  
Recoil Nucleus ◽  
Projectile Energy ◽  
Neutron Separation Energy ◽  
Differential Cross Sections ◽  
Separation Energy ◽  
Neutron Shell

The spectroscopic factor (SF) of doubly-magic nuclei, neutron shell closed and neutron-rich nuclei has been determined through ([Formula: see text], [Formula: see text]) reaction in the projectile energy range from 3 to 26[Formula: see text]MeV. The theoretical angular differential cross-sections of ([Formula: see text], [Formula: see text] reactions in scattering center-of-mass angles from [Formula: see text] to [Formula: see text] have been calculated using FRESCO and NRV-DWUCK5 codes. By comparing the theoretical angular differential cross-sections with available experimental angular differential cross-sections, the values of SF have been determined. The exponential increase of SF as a function of neutron separation energy normalized by spin of the recoil nuclei has been shown for the first time for doubly-magic nuclei. The similar type of trend has also been observed for neutron-rich as well as neutron shell closed nuclei as a function of neutron separation energy normalized by asymmetric factor of recoil nucleus. More experimental data are required to verify the trend predicted by this investigation.

scholarly journals Measurements of the differential cross sections of the production of Z + jets and γ + jets and of Z boson emission collinear with a jet in pp collisions at $$ \sqrt{s} $$ = 13 TeV

2021 ◽  
Vol 2021 (5) ◽  
Author(s):  
◽  
A. M. Sirunyan ◽  
A. Tumasyan ◽  
W. Adam ◽  
F. Ambrogi ◽  
...  
Keyword(s):  
Cross Sections ◽  
Differential Cross ◽  
Z Boson ◽  
Center Of Mass ◽  
Z Bosons ◽  
Differential Cross Sections ◽  
Pp Collisions ◽  
Center Of Mass Energy ◽  
Cms Experiment ◽  
Theoretical Predictions

Abstract Measurements of the differential cross sections of Z + jets and γ + jets production, and their ratio, are presented as a function of the boson transverse momentum. Measurements are also presented of the angular distribution between the Z boson and the closest jet. The analysis is based on pp collisions at a center-of-mass energy of 13 TeV corresponding to an integrated luminosity of 35.9 fb−1 recorded by the CMS experiment at the LHC. The results, corrected for detector effects, are compared with various theoretical predictions. In general, the predictions at higher orders in perturbation theory show better agreement with the measurements. This work provides the first measurement of the ratio of the differential cross sections of Z + jets and γ + jets production at 13 TeV, as well as the first direct measurement of Z bosons emitted collinearly with a jet.

Vacuum polarization and D-wave α−α scattering

1969 ◽  
Vol 47 (1) ◽  
pp. 113-115 ◽  
Author(s):  
Mark W. Kermode
Keyword(s):  
Cross Sections ◽  
Differential Cross ◽  
Vacuum Polarization ◽  
Center Of Mass ◽  
Phase Shifts ◽  
Differential Cross Sections ◽  
Wave Phase ◽  
Low Energies ◽  
D Wave

The D-wave phase shifts for α−α scattering at low energies are obtained from (i) new analyses of the differential cross sections and (ii) the effects of vacuum polarization. The results are −0.4° (−0.4°), −0.2° (−0.4°), +0.2° (−0.4°), −0.2° (−0.2°), and 0.3° (0.2°) for the center-of-mass energies 0.3, 0.425, 0.5, 0.75, and 1.0 MeV, respectively. It is felt that these results are significant.

A Study of the (d,p) Reaction on 62Ni near the Coulomb Barrier

1972 ◽  
Vol 50 (18) ◽  
pp. 2096-2099 ◽  
Author(s):  
D. Sykes ◽  
K. Ramavataram ◽  
G. F. Mercier ◽  
C. St-Pierre ◽  
C. S. Yang
Keyword(s):  
Cross Sections ◽  
Differential Cross ◽  
Single Particle ◽  
Coulomb Barrier ◽  
Spectroscopic Factor ◽  
Differential Cross Sections ◽  
Absolute Differential ◽  
Particle Strength ◽  
Spectroscopic Factors ◽  
The Absolute

The absolute differential cross sections for the 62Ni(d,p)63Ni reaction have been measured at deuteron bombarding energies of 4.45 and 5.12 MeV. Spectroscopic factors were obtained and the results are discussed in terms of the DWBA model of stripping reactions. It is found that this technique leads to reliable and stable values of the spectroscopic factor even for states which carry less than half the single particle strength.

scholarly journals MEASUREMENT OF DIFFERENTIAL CROSS SECTIONS OF p(e, e′π+)n FOR HIGH-LYING RESONANCES AT Q2 < 5 GeV2

2014 ◽  
Vol 26 ◽  
pp. 1460102
Author(s):  
◽  
KIJUN PARK
Keyword(s):  
Cross Sections ◽  
Differential Cross ◽  
Center Of Mass ◽  
Differential Cross Sections ◽  
Cross Section Data ◽  
Photon Virtuality ◽  
Mass System ◽  
Section Data ◽  
Data Points ◽  
First Time

The exclusive electroproduction process ep → e′nπ+ was measured in the range of the invariant mass for nπ+ system 1.6 GeV ≤ W ≤ 2.0 GeV, and the photon virtuality 1.8 GeV2 ≤ Q2 ≤ 4.0 GeV2 using CLAS. For the first time, these kinematics are probed in exclusive π+ production from the protons with nearly full coverage in the azimuthal and polar angles of the nπ+ center-of-mass system. In this experiment, approximately 39,000 differential cross-section data points were measured. In this conference proceeding, preliminary results of our latest analysis work are presented on differential cross sections and structure functions as well as Legendre Moments.

Differential cross sections for H + D2→ HD(v′ = 2, j′ = 0,3,6,9) + D at center-of-mass collision energies of 1.25, 1.61, and 1.97 eV

2011 ◽  
Vol 13 (18) ◽  
pp. 8175-8179 ◽  
Author(s):  
Nate C.-M. Bartlett ◽  
Justin Jankunas ◽  
Tapas Goswami ◽  
Richard N. Zare ◽  
Foudhil Bouakline ◽  
...  
Keyword(s):  
Cross Sections ◽  
Differential Cross ◽  
Center Of Mass ◽  
Differential Cross Sections

Direct experimental detection of spatially localized clusters in nuclei on alpha-particle beams

2018 ◽  
Vol 27 (02) ◽  
pp. 1850017 ◽  
Author(s):  
Y. A. Zaripova ◽  
V. V. Dyachkov ◽  
A. V. Yushkov ◽  
T. K. Zholdybaev ◽  
D. K. Gridnev
Keyword(s):  
Cross Sections ◽  
Differential Cross ◽  
Direct Method ◽  
Correlation Method ◽  
Experimental Methods ◽  
Recoil Nucleus ◽  
Light Nuclei ◽  
Differential Cross Sections ◽  
Particle Beams ◽  
Alpha Cluster

Direct method for detecting intranuclear clusters of nuclear matter-clusters and determining their effective numbers was developed. The idea of the method is based on the functional coincidence of kinematics for light nuclei in the free state and clusters of the same mass within the nuclear volume. The reliability of the method is additionally confirmed by two experimental methods. The experiments were carried out at the Kazakhstan U-150M accelerator on a beam of [Formula: see text]-particles with energy of 29[Formula: see text]MeV. The first method consists in measuring the half-width of the elastic scattering peak from the angle and a comparison between the differential cross-sections of elastically scattered [Formula: see text] particles on free light nuclei and the differential cross-sections obtained by the authors on intranuclear multicluster. Using the second method, the correlation method, an experiment was performed to record the scattered [Formula: see text] particle on the 9Be nucleus-matrix and the recoil nucleus identical to it ([Formula: see text] particle). Thus, the kinematics of the [Formula: see text] 4He reaction, where 4He is an intranuclear [Formula: see text] cluster, indicates the presence of an intranuclear alpha cluster, which is further confirmed by the authors, an experimental measurement of intranuclear multicluster.

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