scholarly journals Measurement of the differential cross section for Compton scattering by bound electrons

1974 ◽  
Author(s):  
Guy C. Spitale
Keyword(s):  
Differential Cross Section ◽  
Compton Scattering ◽  
Cross Section ◽  
Differential Cross ◽  
Bound Electrons

scholarly journals Signatures of the differential Klein‐Nishina electronic cross section in Compton's quantum theory of scattering of radiation

2019 ◽  
Vol 32 (3) ◽  
pp. 323-330
Author(s):  
Vinay Venugopal ◽  
Piyush S. Bhagdikar
Keyword(s):  
Quantum Theory ◽  
Differential Cross Section ◽  
Compton Scattering ◽  
Cross Section ◽  
Photon Energy ◽  
Differential Cross ◽  
Incident Photon Energy ◽  
Compton Profile ◽  
Incident Photon ◽  
Relative Contribution

Here, we consider the problem of separating the relative contributions of kinematics and dynamics to the differential Klein‐Nishina electronic cross section using graphical and numerical analysis. We show that the values of the energy of scattered photons, and hence the kinetic energy of recoiled electrons calculated from Compton's quantum theory of scattering of radiation, show a degree of matching that increases with the increase in incident photon energy as quantified by chi-square goodness of fit test, with the calculated differential Klein‐Nishina electronic cross section per electron per unit solid angle for the scattering of an unpolarized photon by a stationary free electron, when appropriate normalization procedures are invoked. There is a high degree of matching in a regime where the total electronic Klein‐Nishina cross section for the Compton scattering on a free stationary electron scales as the inverse of the incident photon energy and the contribution of the electro-magnetic interaction to differential electronic cross section diminishes. Hence the third level explanation of Compton effect by quantum electrodynamics has a degree of matching with the first level of Compton's quantum theory. The degree of mismatch is an indicator of the relative contribution of dynamics to differential Klein‐Nishina electronic cross section compared to kinematics. For incident photon energies less than 1 MeV, we obtain the values of the scattering angles at which calculated differential cross section is nonzero but is kinematically limited which may lead to broadening of Compton profile. At the scattering angle where the differential cross section value is minimum for a given incident photon energy, we obtain the relative contribution of dynamics to the differential cross section compared to kinematics. Therefore, these predictions which need to be confirmed experimentally have significance to the understanding of the mechanisms of photon‐electron interactions in the Compton scattering.

scholarly journals Determination of coherent to Compton scattering differential cross section ratios of some inorganic materials with EDXRF

2017 ◽  
Vol 95 (4) ◽  
pp. 407-411 ◽  
Author(s):  
D. Yılmaz ◽  
Ü. Şimşek ◽  
T. Akkuş ◽  
Y. Şahin
Keyword(s):  
Differential Cross Section ◽  
Compton Scattering ◽  
Cross Section ◽  
Gamma Rays ◽  
Differential Cross ◽  
Hpge Detector ◽  
Inorganic Materials ◽  
Gamma Detector ◽  
Intensity Ratios

In this study, we aimed to determine coherent to Compton scattering differential cross section ratios of some inorganic materials (BaSO4, CaF2, Mg2SiO4, MgSO4, and ZnSO4(7H2O)) for several scattering angles (95°, 105°, 115°, 125°, and 135°). Coherent to Compton scattering differential cross section ratios were investigated experimentally by using an HPGe detector, which has a resolution of 199.6 eV at the 5.9 keV. The samples were excited with 59.54 keV gamma rays emitted from Am241 point source. The intensity ratios were corrected due to the photopeak efficiency of the gamma detector and absorption of photons in the target and air. It is observed that coherent to Compton scattering differential cross section ratios decrease with increasing scattering angle.

Triply differential cross section for Compton scattering

1998 ◽  
Vol 57 (4) ◽  
pp. 2683-2691 ◽  
Author(s):  
Z. Kaliman ◽  
T. Surić ◽  
K. Pisk ◽  
R. H. Pratt
Keyword(s):  
Differential Cross Section ◽  
Compton Scattering ◽  
Cross Section ◽  
Differential Cross

Accurate Calculation of the Differential Cross Section of Compton Scattering in Quantum Electronic Dynamics

2012 ◽  
Vol 246-247 ◽  
pp. 519-526
Author(s):  
Hai Yan Tang ◽  
Jia Wei Zhang ◽  
Xue Wen Chen ◽  
Xian You Wang
Keyword(s):  
Differential Cross Section ◽  
Compton Scattering ◽  
Cross Section ◽  
Differential Cross ◽  
Coupling Model ◽  
Tree Level ◽  
Precise Calculation ◽  
Electronic Dynamics ◽  
The One ◽  
Better Than

In the minimum electromagnetism coupling model of interaction between photon and electron, we present a effective and precise calculation on the differential cross section of Compton scattering with the help of the electron renormalized chain propagator. By comparing the result of the differential cross section of the Compton scattering with electron propagator at the tree level and the one loop level, respectively, we find that the correction of the chain diagram is better than the one-loop diagram to the differential cross section in the 10-3order.

The effect of external magnetic field on the coherent to Compton scattering differential cross section ratios of elements in the range 20 ≤ Z ≤ 32

2020 ◽  
Vol 98 (1) ◽  
pp. 107-110
Author(s):  
Lütfü Demir ◽  
Mine Uğurlu
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Differential Cross Section ◽  
Compton Scattering ◽  
Cross Section ◽  
Gamma Rays ◽  
Differential Cross ◽  
Radioactive Source ◽  
The Magnetic Field ◽  
Theoretical Results

The coherent to Compton differential cross section ratios were calculated for elements in the range 20 ≤ Z ≤ 32 under an external magnetic field. The elements were irradiated by 59.54 keV gamma rays from an 241Am radioactive source. A Si(Li) detector was used to detect the scattered photons. It was observed that the coherent to Compton differential cross section ratios of the samples increase with the magnetic field (B = 0, 0.4, and 0.8 T). The theoretical results were obtained with two different methods and compared with the experimental results at 0 T.

Measurement of coherent to Compton scattering differential cross-section ratios of cadmium at different momentum transfer factors

2020 ◽  
Vol 98 (1) ◽  
pp. 102-106 ◽  
Author(s):  
Tuba Akkuş
Keyword(s):  
Differential Cross Section ◽  
Compton Scattering ◽  
Cross Section ◽  
Atomic Number ◽  
Differential Cross ◽  
Germanium Detector ◽  
Transfer Factors ◽  
Relativistic Form Factor ◽  
Scattering Ratio ◽  
Best Fit

The coherent to Compton scattering ratio is a useful technique because it is independent of the density of the material and the material is defined only by the atomic number. Also, this ratio is used where changes in the atomic number are important and changes in the attenuation coefficient are too small to detect. In this study, coherent to Compton scattering ratios of cadmium have been calculated at different scattering angles (90°, 95°, 100°, 105°, 110°, 115°, 120°, 125°, and 130°). A high purity germanium detector was used. The coherent to Compton scattering differential cross-section ratios were plotted as a function of the scattering angles and constituted a best fit curve. It was observed that the coherent to Compton differential cross-section ratios decrease with an increasing scattering angle. The experimental results agree well with the results of the non-relativistic and relativistic form factor method.

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