A study on atomic photo effect cross sections at the K-edge in high Z-elements

Rao, G. Krishna; Perumallu, A.; Rao, A. Seshagiri

doi:10.1016/0378-4363(84)90051-2

Cited by 3 publications

(2 citation statements)

References 16 publications

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“…The validity of Eq. (8) was verified for a number of fcc,bcc and hcp metals [15][16][17]. Therefore, the X-ray Debye temperatures obtained in the present work have been used to estimate vacancy formation energies for Mg, Zn and Cd.…”

Section: Resultsmentioning

confidence: 58%

Mean Square Amplitudes of vibration and Associated Debye temperatures of Mg, Zn and Cd

Purushotham¹

2012

IOSRJEN

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The directional mean square amplitudes of vibration Debye-Waller factor and associated Debye temperatures of hexagonal Mg, Zn and Cd have been obtained from X-ray integrated intensities. The integrated intensities have been measured with a Philips 3020 powder diffractometer fitted with a proportional counter using filtered CuKradiation at room temperature and have been corrected for thermal diffuse scattering. Within the limits of experimental errors, the anisotropy observed in these parameters. The experimental values of directional Debye temperature have been compared with corresponding values obtained from theoretical calculations. Vacancy formation energies of Mg, Zn and Cd have been estimated using a relation connecting it with the X-ray Debye temperature.

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Section: Resultsmentioning

confidence: 58%

Mean Square Amplitudes of vibration and Associated Debye temperatures of Mg, Zn and Cd

Purushotham¹

2012

IOSRJEN

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“…The K shell oscillator strength is the probability of transition of the K shell electrons to all allowable states. Several investigators determined the Davisson-Kirchner ratio and/ or K shell oscillator strength values for the different elements [34][35][36][37][38][39][40][41].…”

Section: Introductionmentioning

confidence: 99%

Chemical effect on theKshell absorption parameters of some selected cerium compounds

2016

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In this study, the photoelectric cross section values of Ce, CeCl 3 .7H 2 O, Ce 2 (SO 4 ) 3 , Ce(OH) 4 and Ce 2 O 3 samples were measured in the energy range from 31.82 keV up to 51.70 keV by adopting in narrow beam geometry. Using these photoelectric cross sections, the K shell photoelectric cross sections at the K-edge, the K shell absorption jump ratios and jump factors, the Davisson-Kirchner ratios and K shell oscillator strength values were estimated experimentally. The measured parameters were compared with the theoretical calculated values. It is observed that the K shell photoelectric cross section at the K-edge and K shell oscillator strength values of an element are affected by the chemical environment of material while the K shell absorption jump ratio, K shell absorption jump factor and Davisson-Kirchner ratio are not affected by the chemical environment of material for the present samples. To the best of our knowledge, the chemical effects on the Davisson-Kirchner ratio and K shell oscillator strength have not been discussed for any element by now.

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Measurement of X-ray absorption coefficient of NiCO3 around K-edge of Ni using synchrotron radiation

Roy

Rao

2016

Materials Today: Proceedings

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A study on atomic photo effect cross sections at the K-edge in high Z-elements

Cited by 3 publications

References 16 publications

Mean Square Amplitudes of vibration and Associated Debye temperatures of Mg, Zn and Cd

Mean Square Amplitudes of vibration and Associated Debye temperatures of Mg, Zn and Cd

Chemical effect on theKshell absorption parameters of some selected cerium compounds

Measurement of X-ray absorption coefficient of NiCO3 around K-edge of Ni using synchrotron radiation

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