scholarly journals Penetrating power in radiography of high-Z materials as a function of bremsstrahlung spectrum endpoint energy

2021 ◽  
Author(s):  
Benjamin Tobias ◽  
Christopher Tomkins
Keyword(s):  
Bremsstrahlung Spectrum ◽  
Endpoint Energy

Inner-bremsstrahlung spectrum of55Fe with a Ge(Li) detector

1969 ◽  
Vol 61 (2) ◽  
pp. 220-224 ◽  
Author(s):  
Y. Kabasakal ◽  
M. K. Ramaswamy
Keyword(s):  
Bremsstrahlung Spectrum ◽  
Inner Bremsstrahlung

Determination of the voltage applied to x-ray tubes from the bremsstrahlung spectrum obtained with a silicon PIN photodiode

2000 ◽  
Vol 27 (11) ◽  
pp. 2617-2623 ◽  
Author(s):  
Marcia C. Silva ◽  
Silvio B. Herdade ◽  
Patrı́cia Lammoglia ◽  
Paulo R. Costa ◽  
Ricardo A. Terini
Keyword(s):  
Bremsstrahlung Spectrum ◽  
X Ray ◽  
Pin Photodiode

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.

YIELDS AND ANGULAR DISTRIBUTIONS OF FAST PHOTOPROTONS

1963 ◽  
Vol 41 (6) ◽  
pp. 871-880 ◽  
Author(s):  
O. M. Mracek Mitchell ◽  
K. G. McNeill
Keyword(s):  
Maximum Energy ◽  
Angular Distributions ◽  
Bremsstrahlung Spectrum

Measurements are described on the angular distributions of fast photoprotons (Ep > 8 Mev) ejected from 16 elements of [Formula: see text] by a bremsstrahlung spectrum of 22-Mev maximum energy. Some shell features are observed which, together with results of other authors, are discussed in terms of the Wilkinson model of photodisintegration.

Collective Effects on the Transition Bremsstrahlung Spectrum due to the Polarization Interaction in Nonideal Plasmas

2009 ◽  
Vol 64 (1-2) ◽  
pp. 49-53
Author(s):  
Hwa-Min Kim ◽  
Young-Dae Jung
Keyword(s):  
Cross Section ◽  
Impact Parameter ◽  
Photon Energy ◽  
Parameter Analysis ◽  
Collective Effects ◽  
Bremsstrahlung Spectrum ◽  
Collective Effect ◽  
Bremsstrahlung Radiation ◽  
Polarization Interaction ◽  
Nonideal Plasmas

The collective effects on the transition bremsstrahlung spectrum due to the polarization interaction between the electron and Debye shielding cloud of an ion are investigated in nonideal plasmas. The impact parameter analysis with the effective pseudopotential model taking into account the nonideal collective and plasma screening effects is applied to obtain the bremsstrahlung radiation cross-section as a function of the nonideality plasma parameter, Debye length, photon energy, and projectile energy. It is shown that the collective effects enhance the bremsstrahlung radiation cross-section and decrease with increasing impact parameter. It is also shown that the collective effect is the most significant near the maximum position of the bremsstrahlung cross-section. In addition, it is shown that the collective effect decreases with an increase of the radiation photon energy

scholarly journals Effect of Coulomb Focusing on the Electron–Atom Bremsstrahlung Cross Section for Tungsten and Iron in Nonthermal Lorentzian Plasmas

2020 ◽  
Vol 10 (14) ◽  
pp. 4832
Author(s):  
Myoung-Jae Lee ◽  
Naoko Ashikawa ◽  
Young-Dae Jung
Keyword(s):  
Cross Section ◽  
Atomic Charge ◽  
Bremsstrahlung Spectrum ◽  
Nonthermal Electron ◽  
Emission Rates ◽  
Focusing Effect ◽  
Nonthermal Electrons ◽  
Electron Atom ◽  
Bremsstrahlung Emission ◽  
Bremsstrahlung Process

The Coulomb focusing effect on the electron–atom bremsstrahlung spectrum is investigated in nonthermal Lorentzian plasmas. The universal expression of the cross section of nonrelativistic electron–atom bremsstrahlung process is obtained by the solution of the Thomas-Fermi equation with the effective atomic charge. The effective Coulomb focusing for the electron–atom bremsstrahlung cross section near the threshold domain is also investigated by adopting the modified Elwert-Sommerfeld factor with the mean effective charge for the bremsstrahlung process. In addition, the bremsstrahlung emission rates are obtained by considering encounters between nonthermal electrons and atoms such as Fe and W atoms. We found that the bremsstrahlung emission rates for nonthermal electron–atoms are lower than those for thermal plasmas. Various nonthermal effects on the bremsstrahlung emission rates in Lorentzian plasmas are also discussed.

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