scholarly journals Measurement and analysis of nuclear γ -ray production cross sections in proton interactions with Mg, Si, and Fe nuclei abundant in astrophysical sites over the incident energy range E=30–66 MeV

2020 ◽  
Vol 102 (2) ◽  
Author(s):  
W. Yahia-Cherif ◽  
S. Ouichaoui ◽  
J. Kiener ◽  
E. A. Lawrie ◽  
J. J. Lawrie ◽  
...  
Keyword(s):  
Energy Range ◽  
Cross Sections ◽  
Incident Energy ◽  
Production Cross ◽  
Measurement And Analysis ◽  
Γ Ray

scholarly journals Erratum to: A Parameterisation of γ-ray production cross-sections for pp interactions in a broad energy range

2015 ◽  
Vol 105 ◽  
pp. 02006
Author(s):  
Andrew M. Taylor ◽  
Ervin Kafexhiu ◽  
Felix Aharonian ◽  
Gabriela Vila
Keyword(s):  
Energy Range ◽  
Cross Sections ◽  
Production Cross ◽  
Broad Energy Range ◽  
Γ Ray ◽  
Broad Energy

Calculation of proton total reaction cross sections for some target nuclei in incident energy range of 10–600 MeV

2010 ◽  
Vol 73 (10) ◽  
pp. 1700-1706 ◽  
Author(s):  
H. Büyükuslu ◽  
A. Kaplan ◽  
A. Aydin ◽  
E. Tel ◽  
G. Yıldırım
Keyword(s):  
Energy Range ◽  
Cross Sections ◽  
Incident Energy ◽  
Reaction Cross ◽  
Total Reaction ◽  
Reaction Cross Sections

scholarly journals CROSS-SECTIONS FOR PHOTONUCLEAR REACTIONS 93Nb(γ,n)92mNb AND 93Nb(γ,n)92tNb IN THE END-POINT BREMSSTRAHLUNG ENERGIES 36...91 MeV

2020 ◽  
pp. 148-153
Author(s):  
A.N. Vodin ◽  
O.S. Deiev ◽  
I.S. Timchenko ◽  
S.N. Olejnik ◽  
A.S. Kachan ◽  
...  
Keyword(s):  
Energy Range ◽  
Cross Sections ◽  
Maximum Energy ◽  
Reaction Cross ◽  
Bremsstrahlung Spectrum ◽  
Photonuclear Reactions ◽  
End Point ◽  
Γ Ray ◽  
First Time ◽  
Good Agreement

The flux-weighted averaged over the energy range of bremsstrahlung spectrum from reaction threshold up to the maximum energy of γ-ray cross-sections <σ(E)> of the 93Nb(γ,n)92mNb and 93Nb(γ,n)92tNb photonuclear reactions were determined by the gamma-activation method within the end-point bremsstrahlung energies Еmax = 36…91 MeV. Activation of 93Nb targets has been done by a bremsstrahlung flux using an electron beam at the linear accelerator LUE-40 at RDC "Accelerator" NSC KIPT. The γ-ray spectra of irradiated targets were registered using the HPGe detector with an energy resolution of 1.8 keV for the 1332 keV line 60Co. To control the bremsstrahlung flux we used natMo witness-targets and a reaction cross-section of 100Mo(γ,n)99Mo. Obtained experimental cross-sections <σ(E)> of the studied reactions are in good agreement with the theoretical values calculated within TALYS 1.9 code and the results of other authors. The averaged cross-sections <σ(E)> of the 93Nb(γ,n)92mNb and 93Nb(γ,n)92tNb reactions in the energy range 35...45 MeV and > 70 MeV were obtained for the first time.

Identification of 26-minute Zr-84

1983 ◽  
Vol 61 (4) ◽  
pp. 754-756 ◽  
Author(s):  
Seiichi Shibata ◽  
Paul J. Karol
Keyword(s):  
Cross Sections ◽  
Half Life ◽  
Production Cross ◽  
Isotopic Distribution ◽  
Absolute Abundance ◽  
Spallation Reactions ◽  
Relative Production ◽  
Γ Ray ◽  
The Absolute ◽  
Mev Protons

An unknown γ-ray of energy 112.5 keV was found in zirconium fractions chemically extracted from isotopically enriched molybdenum targets bombarded with 500 and 800 MeV protons. All evidence suggests that the γ-ray is identifiable with the decay of 84Zr to 84Y. A half-life of 25.7 ± 0.5 min was obtained for 84Zr, which is considerably longer than previously reported half-lives. The absolute abundance of the 112.5 keV γ-ray was also determined. Relative production cross sections for 84Zr were calculated using these results and were consistent with the values interpolated from isotopic distribution curves for spallation reactions.

Dissociative excitation of CF4 by controlled electron impact

1989 ◽  
Vol 67 (7) ◽  
pp. 699-705 ◽  
Author(s):  
S. Wang ◽  
J. L. Forand ◽  
J. W. McConkey
Keyword(s):  
Energy Range ◽  
Emission Spectrum ◽  
Electron Impact ◽  
Cross Sections ◽  
Incident Energy ◽  
Dissociative Excitation ◽  
Excitation Mechanism ◽  
Excitation Functions ◽  
Single Collision

Dissociative excitation of CF4 by electron impact has been studied under single-collision conditions for incident energies up to 600 eV. The emission spectrum in the range 50–130 nm shows many features arising from neutral and singly ionized fluorine and carbon fragments. Absolute cross sections for the observed features were measured at 200 eV incident energy, while the excitation functions of the most intense emissions were studied over the whole energy range. Cascade was shown to be the dominant excitation mechanism for some of these features.

Gamma-ray yields from the reaction D(p, γ)3He at low energies

1970 ◽  
Vol 48 (24) ◽  
pp. 3059-3061 ◽  
Author(s):  
G. M. Bailey ◽  
G. M. Griffiths ◽  
M. A. Olivo ◽  
R. L. Helmer
Keyword(s):  
Energy Range ◽  
Cross Sections ◽  
Gamma Ray ◽  
Total Cross Sections ◽  
Isotropic Component ◽  
Low Energies ◽  
Theoretical Predictions ◽  
Γ Ray ◽  
Deuterated Polyethylene

Total cross sections and measurements of the small isotropic component of the γ-ray yield from the reaction D(p, γ)3He have been determined in the energy range from 57 to 1100 KeV using gas and deuterated polyethylene targets. The results are compared with some theoretical predictions.

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