Study on the field cross-section distribution of the EMP propagation in crooked tunnel with parallel implementation

2011 ◽  
Author(s):  
Yawen Liu ◽  
Bin Chen ◽  
Zhaoyang Cai ◽  
Run Xiong ◽  
Bihua Zhou
Keyword(s):  
Cross Section ◽  
Parallel Implementation ◽  
Cross Section Distribution

A Parallel Implementation of 3D Computed Tomography Algorithm

2015 ◽  
Vol 770 ◽  
pp. 491-494
Author(s):  
Andrey E. Kovtanyuk
Keyword(s):  
Computed Tomography ◽  
3D Reconstruction ◽  
Density Distribution ◽  
Cross Section ◽  
Cross Sections ◽  
Input Data ◽  
Parallel Implementation ◽  
Back Projection ◽  
Single Cross Section ◽  
Single Cross

A computed tomography problem as a 3D reconstruction of density distribution is considered. The input data are obtained as a result of irradiations. The solution of the computed tomography problem is presented as a set of cross-section images. The reconstruction in a single cross-section is performed by algorithm of convolution and back projection. The parallelization is fulfilled over a set of cross-sections by use of the MPI technology.

INTERACTION OF VANADIUM WITH PROTONS OF ENERGIES UP TO 84 MEV

1963 ◽  
Vol 41 (9) ◽  
pp. 2194-2209 ◽  
Author(s):  
S. Hontzeas ◽  
L. Yaffe
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Heavy Particle ◽  
Particle Emission ◽  
Surface Absorption ◽  
Excitation Functions ◽  
Absorption Models ◽  
Comparison Of The Results ◽  
Bombarding Energy ◽  
Cross Section Distribution

Radiochemical techniques have been used to determine absolute excitation functions for 17 nuclides formed as spallation products from the irradiation of vanadium by protons of energy up to 84 Mev. The shape of the excitation functions and classical threshold calculations showed evidence of contribution of heavy-particle emission in the reactions of the type (p,3pxn), (p,5pxn), and (p,7pxn). The Barr method for analysis of the cross-section distribution was modified and applied at 60 and 80 Mev bombarding energies. The experimentally measured cross sections for 16 nuclides at 60 and 80 Mev bombarding energies were fitted to the four-parameter Rudstam equation σ (A,Z) = exp [PA−Q−R(Z−SA)2]. Comparison of the results obtained at 8 Mev bombarding energy with the predictions of the weak and strong absorption models showed better agreement with the predictions obtained by using the surface absorption Fernbach–Bjorklund potential.

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