scholarly journals A Detailed Study of the 12C(d,p0)13C Reaction at Detector Angles between 135 ° and 170 °, for the Energy Range Ed,lab = 900-2000 keV

2019 ◽  
Vol 14 ◽  
pp. 95
Author(s):  
M. Kokkoris ◽  
P. Misaelides ◽  
S. Kossionides ◽  
Ch. Zarkadas ◽  
A. Lagoyannis ◽  
...  
Keyword(s):  
Cross Sections ◽  
Differential Cross ◽  
Depth Distribution ◽  
Projectile Energy ◽  
Published Data ◽  
Surface Layers ◽  
Near Surface ◽  
Nominal Thickness ◽  
Natural Carbon

The differential cross sections of the 12C(d,po)13C reaction applied to the determination of the depth distribution of carbon in near-surface layers of materials were determined in the projectile energy region F,dtiab — 900-2000 keV (in steps of 25 keV) and for detector angles between 135 ° and 170 ° (in steps of 5 ° ) using as targets 99.9% purity self-supported natural carbon (98.9% 12C - 1.1% 13C) foils of nominal thickness ca. lxlO18 at/cm2. The overall error in the absolute differential cross section measurements varied between ~6-22%. The results were compared with already published data and the explanation of the occurring differences was attempted.

scholarly journals Differential Cross Section Measurements of the $^{12}C(d,p_{1,2,3})^{13}C$ Reaction, in the Energy Range E$_{d,lab}$= 900-2000 keV, Suitable for NRA

2020 ◽  
Vol 15 ◽  
pp. 91
Author(s):  
M. Kokkoris ◽  
R. Vlastou ◽  
C. T. Papadopoulos ◽  
A. Kontos ◽  
P. Misaelides ◽  
...  
Keyword(s):  
Differential Cross Section ◽  
Cross Section ◽  
Differential Cross ◽  
Strong Influence ◽  
Projectile Energy ◽  
Published Data ◽  
Resonance Mechanism ◽  
Absolute Differential ◽  
Nominal Thickness ◽  
Natural Carbon

Absolute differential cross section measurements of the $^{12}C(d,p_{1,2,3})^{13}C$ reaction were performed in the projectile energy region Ed,lab = 900-2000 keV (in steps of 25 keV) and for detector angles between 145° and 170° (in steps of 5°) using as targets 99.9% purity self-supported natural carbon (98.9% 12C – 1.1% 13C) foils of nominal thickness ca. 1×10$^{18}$ at/cm2. The overall error in the absolute differential cross section measurements varied between ~8-30%. The results, presented in both graphical and tabular form, are compared with already published data and an attempt is made to explain the occurring differences. The strong influence of the resonance mechanism is presented and discussed.

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.

Measurement and pion exchange analysis of the inclusive spectra np→pX0 between 1.4 and 1.9 GeV/c and determination of the differential cross sections np→pΔ330

1976 ◽  
Vol 108 (2) ◽  
pp. 189-213 ◽  
Author(s):  
G. Bizard ◽  
F. Bonthonneau ◽  
J.L. Laville ◽  
F. Lefebvres ◽  
J.C. Malherbe ◽  
...  
Keyword(s):  
Cross Sections ◽  
Differential Cross ◽  
Pion Exchange ◽  
Differential Cross Sections

scholarly journals Copper and sulphur depth profile in patina layers using NRA and RBS

2019 ◽  
Vol 11 ◽  
Author(s):  
G. Kalliabakos ◽  
S. Kossionides ◽  
P. Misailides ◽  
C. T. Papadopoulos ◽  
R. Vlastou
Keyword(s):  
Excited State ◽  
Cross Sections ◽  
Ground State ◽  
Depth Distribution ◽  
Nuclear Reaction Analysis ◽  
Beam Direction ◽  
The Third ◽  
First Excited State ◽  
Γ Ray

A combination of nuclear reaction analysis (NRA) and Rutherford backscattering spectroscopy (RBS) were utilized in order to obtain information on the depth distribution of sulphur and copper in artificially produced and natural patina layers. The copper profiling was performed by using the reaction 63Cu(p,p'y)6 3Cu and detecting the 1327 keV γ-ray deexciting the third excited state to the ground state of 6 3Cu produced. For the determination of sulfur the 2230 keV γ-ray was used, deexciting the first excited state to the ground state of 32S formed through the reaction 3 2S(p,p'y)3 2S, which exhibits three sharp resonances at projectile energies 3.094, 3.195 and 3.379 MeV. The relevant cross-sections were measured in the energy range between 3.0 and 3.7 MeV in steps of 20 keV at 125° to the incident proton beam direction. Supporting information on the depth distribution of oxygen and the other elements of the patina samples was obtained by p-RBS (Ep = 1.5 MeV; θ = 160°).

Cascade exciton model analysis of energetic pion-induced fission of heavy nuclei: Target mass and projectile energy dependence

2021 ◽  
Vol 30 (07) ◽  
pp. 2150065
Author(s):  
Mukhtar Ahmed Rana ◽  
Awais Ahmed ◽  
Farzana Siddique ◽  
Junaid Ahmed
Keyword(s):  
Cross Sections ◽  
Data Bank ◽  
Nuclear Fission ◽  
Projectile Energy ◽  
Published Data ◽  
Heavy Nuclei ◽  
Exciton Model ◽  
Fission Process ◽  
Scale Down ◽  
Induced Fission

A data bank of negative and positive (80–1665[Formula: see text]MeV) pion-induced experimental fission cross-sections of heavy nuclei from 119Sn to 238U is compiled using present results and published data from the literature. Corresponding calculations of fission cross-sections, using the cascade exciton model (CEM) are also included in the compilation. Fission cross-sections compiled in the data bank are examined critically. Mass and energy dependences of fission cross-sections are analyzed. Fission cross-sections of 238U targets are the highest and scale down approximately, for other targets studied, with fissility, [Formula: see text]. In the fissility expression, [Formula: see text] and [Formula: see text] are atomic and mass numbers of the target while [Formula: see text] refer to positive and negative pion projectiles. The presented data bank is of interest for students and researchers involved in the investigation of energetic light particle-induced fission of heavy nuclei. Nuclear fission of heavy nuclei has been classified into three regimes. Phenomenological discussion of the fission process is also given.

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