The elastic scattering of 662 kev gamma rays

Murty, V A Narasimha; Lakshminarayana, V.; Jnanananda, S.

doi:10.1088/0370-1328/85/6/303

Cited by 2 publications

(4 citation statements)

References 8 publications

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“…6 10-165 87 [75], [77], [83], [85]- [88], [93], [97], [112], [113], [115], [127], [131], [135], [145], [148], [149], [ [113], [131], [133], [135], [139], [140], [148], [149] 40 Zr 13.95-661. 6 10-165 67 [75], [80], [85]- [87], [113], [115], [120], [125]- [127], [134], [135], [148], [ [80], [85]- [88], [113], [115], [127], [131], [135], [148], [ [65],…”

Section: Experimental Dataunclassified

“…[156] Hf 22.16-511 0.5-160 13 [62], [75], [102], [113] [66], [67], [69], [75], [77], [85]- [87], [98], [102], [105], [112]- [114], [119], [120], [123]- [127], [129], [145], [148]- [150], [152], [155], [156] 74 W 13.95-1408.1 0.5-165 151 [59], [60], [63]- [65], [78], [85]- [87], [102], [112], [113], [123], [124], [127], [148] [94], [102], [112], [113], [119], [120], [127], [131]- [133], [135],…”

Section: Experimental Datamentioning

confidence: 99%

“…13.95-1408.1 0.5-165 151 [59], [60], [63]- [65], [78], [85]- [87], [102], [112], [113], [123], [124], [127], [148]- [150], [ [94], [102], [112], [113], [119], [120], [127], [131]- [133], [135], [137], [138], [148], [149] 79 Au 5.41-511 0.5-160 108 [66], [69], [70], [75], [89], [97], [102], [107], [112], [113], [115], [131]- [135], [137]- [140], [145], [146], [148], [149], [156] 80 Hg 22.1-1600 0.5-135 16…”

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confidence: 99%

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Photon Elastic Scattering Simulation: Validation and Improvements to Geant4

Batič

Hoff

Pia

et al. 2012

IEEE Trans. Nucl. Sci.

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Abstract-Several models for the simulation of photon elastic scattering are quantitatively evaluated with respect to a large collection of experimental data retrieved from the literature. They include models based on the form factor approximation, on S-matrix calculations and on analytical parameterizations; they exploit publicly available data libraries and tabulations of theoretical calculations. Some of these models are currently implemented in general purpose Monte Carlo systems; some have been implemented and evaluated for the first time in this paper for possible use in Monte Carlo particle transport. The analysis mainly concerns the energy range between 5 keV and a few MeV. The validation process identifies the newly implemented model based on second order S-matrix calculations as the one best reproducing experimental measurements. The validation results show that, along with Rayleigh scattering, additional processes, not yet implemented in Geant4 nor in other major Monte Carlo systems, should be taken into account to realistically describe photon elastic scattering with matter above 1 MeV. Evaluations of the computational performance of the various simulation algorithms are reported along with the analysis of their physics capabilities.

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Section: Experimental Dataunclassified

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confidence: 99%

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confidence: 99%

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Photon Elastic Scattering Simulation: Validation and Improvements to Geant4

Batič

Hoff

Pia

et al. 2012

IEEE Trans. Nucl. Sci.

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“…From the review of the earlier work, it can be inferred that most of the scattering measurements were done using the photon beams either in direct or secondary excitation mode obtained from radioactive sources, namely, 60 Co, 109 Cd, 137 Cs, 147 Cs, 203 Hg, and 241 Am radioisotopes. Some of the measurements on elastic scattering cross sections were performed using photon flux obtained from X‐ray of tube and lack the corrections related to incident photon intensity and other geometrical factors.…”

Section: Introductionmentioning

confidence: 99%

Measurements of elastic scattering cross sections for 25.2, 28.5, 37.4, 36.8, and 42.2 keV X‐ray photons in elements with 22 ≤ Z ≤ 83

et al. 2018

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The differential elastic scattering cross sections were measured for 25.2 (Sn‐Kα), 28.5 (Sn‐Kβ1,3), 37.4 (Nd‐Kα1), 36.8 (Nd‐Kα2), and 42.2 (Nd‐Kα1,3) keV X‐ray photons at 139° scattering angle in elements with 22 ≤ Z ≤ 83. The measurement was done in reflection mode experimental setup involving 50Sn/60Nd secondary targets excited with 241Am radioisotope. The scattered X‐ray photons were detected using a high‐resolution low energy germanium detector (horizontal configuration, FWHM = 300 eV at 59.5 keV) coupled with computerized multichannel analyzer. The intensity of X‐ray photons along with geometrical factors were calculated from the theoretical knowledge of K X‐ray fluorescence cross sections and measured K X‐ray yields from excited targets. The measured values of differential cross sections were compared with the theoretical available values based on form factor and second‐order S‐matrix (SM) approaches. The experimental values of cross sections exhibit a large deviation from modified form (MF) values for the elements with BK/Ein ≈1, where BK is the K‐shell binding energy of electrons and Ein is the energy of incident photon. These deviations in experiment results were smooth out by the inclusion of anomalous scattering factors (ASFs) to the MF values. The measured elastic cross sections were found to be ~7% lower than MFASF values and agree with SM values for all elements under investigation.

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The elastic scattering of 662 kev gamma rays

Cited by 2 publications

References 8 publications

Photon Elastic Scattering Simulation: Validation and Improvements to Geant4

Photon Elastic Scattering Simulation: Validation and Improvements to Geant4

Measurements of elastic scattering cross sections for 25.2, 28.5, 37.4, 36.8, and 42.2 keV X‐ray photons in elements with 22 ≤ Z ≤ 83

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