Theoretical cross section calculation of the 112Sn(α,γ)116Te reaction for the astrophysical P process

2017 ◽  
Author(s):  
C. Yalçin
Keyword(s):  
Cross Section ◽  
Theoretical Cross Section

scholarly journals Compton Cross Section of 662 keV Photons from the K-shell of Co, Cu, Ge, Nb, Mo and Ag

1982 ◽  
Vol 37 (10) ◽  
pp. 1124-1126 ◽  
Author(s):  
J. Eichler ◽  
S. de Barros ◽  
A. M. Conçalves
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Free Electron ◽  
X Rays ◽  
Theoretical Cross Section ◽  
Total Cross Sections

From the intensity of K x-rays produced by 662 keV photons the sum of the total cross sections of the photoelectric and Compton effects on this shell is obtained for the atoms with Z = 27, 29, 32, 41, 42 and 47. The contribution of the photoeffect is about 15% for Co(Z = 27), 50% for Mo (Z = 42) and 70% for Ag(Z = 47). Using theoretical cross section for the photoeffect the total Compton cross section on the K-shell is evaluated. The results agree with the free electron value.

scholarly journals Single photoionization of the Kr-like Rb ii ion in the photon energy range 22–46.0 eV

2019 ◽  
Vol 486 (1) ◽  
pp. 245-250 ◽  
Author(s):  
Brendan M McLaughlin ◽  
James F Babb
Keyword(s):  
Cross Section ◽  
Photon Energy ◽  
Cross Sections ◽  
Large Scale ◽  
Experimental Studies ◽  
Photoionization Cross Section ◽  
Theoretical Work ◽  
Matrix Approximation ◽  
Theoretical Cross Section ◽  
R Matrix

Abstract Single photoionization cross-sections for Kr-like Rb+ ions are reported in the energy (wavelength) range from 22 (564 Å) to 46 eV (270 Å). Theoretical cross-section calculations for this trans-Fe element are compared with measurements from the ASTRID radiation facility in Aarhus, Denmark and from the dual laser plasma technique, at respectively 40 and 35 meV FWHM energy resolution. In the photon energy region 22–32 eV the spectrum is dominated by excitation auto-ionizing resonance states. Above 32 eV the cross-section exhibits classic Fano window resonances features, which are analysed and discussed. Large-scale theoretical photoionization cross-section calculations, performed using a Dirac Coulomb R-matrix approximation are benchmarked against these high-resolution experimental results. Comparison of the theoretical work with the experimental studies allowed the identification of resonance features and their parameters in the spectra in addition to contributions from excited metastable states of the Rb+ ions.

scholarly journals Experimental and theoretical cross section data of deuteron induced nuclear reactions on platinum

2019 ◽  
Vol 321 (2) ◽  
pp. 747-764 ◽  
Author(s):  
F. Tárkányi ◽  
F. Ditrói ◽  
S. Takács ◽  
A. Hermanne ◽  
A. V. Ignatyuk
Keyword(s):  
Cross Section ◽  
Nuclear Reactions ◽  
Theoretical Cross Section ◽  
Cross Section Data ◽  
Section Data
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