Incoherent scattering of 241[Am] gamma photons

Yalçın, Paşa; Ekinci, Neslihan; Kurucu, Y.

doi:10.1016/s0584-8547(02)00011-3

Cited by 4 publications

(4 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Limited by the scope of this work, only a few representative examples are presented. For more examples, the readers can resort to references [28,36,57,[79][80][81][82][83][84][85].…”

Section: Comparisons Between Theoretical Calculations and Experimenta...mentioning

confidence: 99%

“…Results of other elements exhibit a similar behavior, and they are not displayed in this figure. The readers could find more examples in references [79][80][81][82]. The experimental measurements from references [80,81] and the theoretical predictions of FEA and ISF approaches [81,82] are plotted in this figure . In reference [82], the scattering function SF(ω i , θ) is calculated using Equation (30) in RIA framework [81,82] (Please note that in Section 4, we have mentioned that the scattering function SF(ω i , θ) can be obtained from RIA, Waller-Hartree theory, and other methods.…”

Section: Comparisons Between Theoretical Calculations and Experimenta...mentioning

confidence: 99%

“…The readers could find more examples in references [79][80][81][82]. The experimental measurements from references [80,81] and the theoretical predictions of FEA and ISF approaches [81,82] are plotted in this figure . In reference [82], the scattering function SF(ω i , θ) is calculated using Equation (30) in RIA framework [81,82] (Please note that in Section 4, we have mentioned that the scattering function SF(ω i , θ) can be obtained from RIA, Waller-Hartree theory, and other methods. In particular, within the RIA framework, the scattering function SF(ω i , θ) is calculated through the integration of Compton profile J(p z ), see Equations ( 30)- (33).).…”

Section: Comparisons Between Theoretical Calculations and Experimenta...mentioning

confidence: 99%

“…In this figure, the vertical axis labels differential cross sections dσ/dΩ f , and the horizontal axis labels the scattering angle θ. The experimental measurements from reference [80,81] and the theoretical predictions of FEA and ISF approaches [81,82] are plotted in this figure. Since RIA result is reliable and consistent with experimental observations in the Compton peak region ω f ≈ ω C , we can safely use Compton profile J(p z ) in IA approach to tackle Compton scattering in peak region.…”

Section: S C a T T E R I N G A N G L E Q T H E O R Y ( I S F ) T H E ...mentioning

confidence: 99%

See 3 more Smart Citations

An Overview of the Compton Scattering Calculation

2021

View full text Add to dashboard Cite

The Compton scattering process plays significant roles in atomic and molecular physics, condensed matter physics, nuclear physics and material science. It could provide useful information on the electromagnetic interaction between light and matter. Several aspects of many-body physics, such us electronic structures, electron momentum distributions, many-body interactions of bound electrons, etc., can be revealed by Compton scattering experiments. In this work, we give a review of ab initio calculation of Compton scattering process. Several approaches, including the free electron approximation (FEA), impulse approximation (IA), incoherent scattering function/incoherent scattering factor (ISF) and scattering matrix (SM) are focused on in this work. The main features and available ranges for these approaches are discussed. Furthermore, we also briefly introduce the databases and applications for Compton scattering.

show abstract

“…Limited by the scope of this work, only a few representative examples are presented. For more examples, the readers can resort to references [28,36,57,[79][80][81][82][83][84][85].…”

Section: Comparisons Between Theoretical Calculations and Experimenta...mentioning

confidence: 99%

Section: Comparisons Between Theoretical Calculations and Experimenta...mentioning

confidence: 99%

Section: Comparisons Between Theoretical Calculations and Experimenta...mentioning

confidence: 99%

Section: S C a T T E R I N G A N G L E Q T H E O R Y ( I S F ) T H E ...mentioning

confidence: 99%

See 2 more Smart Citations

An Overview of the Compton Scattering Calculation

2021

View full text Add to dashboard Cite

show abstract

On the relativistic impulse approximation for the calculation of Compton scattering cross sections and photon interaction coefficients used in kV dosimetry

Wang

Miguel²,

Seuntjens³

et al. 2020

Phys. Med. Biol.

View full text Add to dashboard Cite

We calculate differential and integrated cross sections for the Compton interaction as well as mass attenuation (), mass energy-transfer (), and mass energy-absorption () coefficients, within the relativistic impulse approximation (RIA) using Compton profiles (CPs) obtained from unrestricted Hartree–Fock electron densities. We investigate the impact of using molecular as opposed to atomic CPs on dosimetric photon interaction coefficients for air, water and graphite, and compare our cross sections to the simpler Waller–Hartree (WH) and Klein–Nishina (KN) formalisms. We find that differences in and resulting from the choice of CPs within the RIA are small relative to the differences between the RIA, WH, and KN calculations. Surprisingly, although the WH binding corrections seem accurate when considering , there are significant discrepancies between the WH and RIA results when we look at . The WH theory can differ substantially from the predictions of KN and the RIA in the tens of keV range (e.g. 6%–10% at 20 keV), when Compton scattering becomes the dominant interaction mechanism. For lower energies, the disagreement further grows to about one order of magnitude at 1 keV. However, since the photoelectric effect transfers more energy than the Compton interaction in the tens of keV range and below, the differences in the total values resulting from the choice of Compton models (KN, WH, or RIA) are not larger than 0.4%, and the differences between WH and the other two theories are no longer prominent.

show abstract

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

Akkuş

2020

Can. J. Phys.

View full text Add to dashboard Cite

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.

show abstract

Incoherent scattering of 241[Am] gamma photons

Cited by 4 publications

References 19 publications

An Overview of the Compton Scattering Calculation

An Overview of the Compton Scattering Calculation

On the relativistic impulse approximation for the calculation of Compton scattering cross sections and photon interaction coefficients used in kV dosimetry

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

Contact Info

Product

Resources

About