Neutron-Energy-Dependent Defect Production Cross Sections for Fission and Fusion Applications

1976 ◽  
Vol 29 (3) ◽  
pp. 346-368 ◽  
Author(s):  
G. R. Odette ◽  
D. R. Doiron
Keyword(s):  
Neutron Energy ◽  
Cross Sections ◽  
Production Cross ◽  
Defect Production ◽  
Fusion Applications ◽  
Energy Dependent

scholarly journals Cosmic Ray Antiprotons 5–12 GeV

1981 ◽  
Vol 94 ◽  
pp. 257-258 ◽  
Author(s):  
T. K. Gaisser ◽  
A. J. Owens ◽  
Gary Steigman
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Production Cross Section ◽  
Production Cross ◽  
Cosmic Ray ◽  
Image Position ◽  
Energy Dependent ◽  
Complex Nuclei

Secondary antiprotons are a potentially interesting probe of cosmic ray propagation because their production cross section is strongly energy-dependent, increasing by more than two orders of magnitude between 10 and 1000 GeV/c. This is quite unlike the case for fragmentation cross sections of complex nuclei, which are virtually constant with energy. Moreover, the flux depends primarily on the environment seen by protons which need not be identical to that probed by other nuclei.

scholarly journals Gamma-Ray Production Cross Sections for Aluminum and Copper at 5.3-MeV Neutron Energy

1978 ◽  
Vol 15 (2) ◽  
pp. 85-90 ◽  
Author(s):  
Yoshio HINO ◽  
Toru YAMAMOTO ◽  
Teiji SAITO ◽  
Yasuo ARAI ◽  
Shinjiro ITAGAKI ◽  
...  
Keyword(s):  
Neutron Energy ◽  
Cross Sections ◽  
Gamma Ray ◽  
Production Cross

SIGMAL: A Program for Calculating L-Shell lonization Cross-Sections

1981 ◽  
Vol 39 ◽  
pp. 198-199 ◽  
Author(s):  
R.F. Egerton
Keyword(s):  
Cross Sections ◽  
Fortran Program ◽  
Absorption Data ◽  
X Ray ◽  
Atomic Electrons ◽  
Energy Dependent ◽  
Hydrogenic Model ◽  
Electron Energy Loss ◽  
X Ray Absorption ◽  
Shell Ionization

SIGMAL is a short (∼ 100-line) Fortran program designed to rapidly compute cross-sections for L-shell ionization, particularly the partial crosssections required in quantitative electron energy-loss microanalysis. The program is based on a hydrogenic model, the L1 and L23 subshells being represented by scaled Coulombic wave functions, which allows the generalized oscillator strength (GOS) to be expressed analytically. In this basic form, the model predicts too large a cross-section at energies near to the ionization edge (see Fig. 1), due mainly to the fact that the screening effect of the atomic electrons is assumed constant over the L-shell region. This can be remedied by applying an energy-dependent correction to the GOS or to the effective nuclear charge, resulting in much closer agreement with experimental X-ray absorption data and with more sophisticated calculations (see Fig. 1 ).

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