Measurement of absorption edge parameters near K edge for the compounds of Zn, Zr, Cd, Ba and Pb

Gupta, Manoj Kumar; Singh, Gurinderjeet; Dhaliwal, A.S.; Kahlon, K.S.

doi:10.1016/j.jallcom.2014.11.034

Cited by 10 publications

(5 citation statements)

References 40 publications

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“…The absorption jump factor is defined as the probability that an incident photon will eject electrons from an atomic shell/ sub-shell. Several researchers studied about the K shell absorption jump ratios and/ or absorption jump factors in the different elements and compounds using the different experimental methods [20][21][22][23][24][25][26][27][28][29][30][31][32][33]. The Davisson-Kirchner ratio and oscillator strength can be determined using the photoelectric cross sections of upper and lower energy at the absorption edge.…”

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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Section: Introductionmentioning

confidence: 99%

Chemical effect on theKshell absorption parameters of some selected cerium compounds

2016

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“…Various researchers determined the K shell absorption jump ratios and jump factors for elements and compounds. There are a few methods, which include: gamma or X‐ray attenuation, energy dispersive X‐ray fluorescence (EDXRF), Compton peak attenuation, and the bremsstrahlung transmission .…”

Section: Introductionmentioning

confidence: 99%

“…But this method is most costly and most time consuming. Also, Gupta et al measured the K shell absorption jump ratios, jump factor, and effective atomic number for the compounds of Zn, Zr, Cd, Ba, and Pb near the K edge using the EDXRF method.…”

Section: Introductionmentioning

confidence: 99%

Study of absorption parameters around the K edge for selected compounds of Gd

et al. 2015

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The K shell absorption jump ratios, jump factors, effective atomic numbers, and electron densities were derived from the measured total mass attenuation coefficient using an energy dispersive X‐ray fluorescence spectrometer for Gd2O3, Gd2(CO3)3H2O, Gd2(C2O4)3H2O, and Gd2(SO4)3 compounds. The total mass attenuation coefficients were measured in the X‐ray energy range from 39.52 to 57.14 keV in a transmission geometry utilizing the Kα2, Kα1, Kβ1, and Kβ2 X‐rays from different secondary source targets excited by the 59.54‐keV photons from an Am‐241 annular source and detected by a Si(Li) detector with a resolution of 160 eV at 5.9 keV. The energy gap, ionization energy, electron affinity, and global electrophilicity parameters of oxide, sulfate, oxalate, and carbonate ions were calculated using density functional theory (B3LYP). The experimental results are discussed based on these parameters. Copyright © 2015 John Wiley & Sons, Ltd.

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“…In this paper, our initial work is to systematically study the effects of hydrostatic pressure on the phase transitions of ZrO 2 as well as the underlying mechanism from the point of dynamical criteria. ZrO 2 , a classic d-electron transition metallic (TM) oxide, can be used not only as a structural ceramic but also, for example, as an important component in catalysis, in oxygen sensors, and in chemically passivating surfaces [22,23]. This require a thorough understanding of the electronic properties, which are sensitive to external force (such as hydrostatic pressure) or temperature, or both.…”

Section: Introductionmentioning

confidence: 99%

First-principles study of phase transition and band structure of ZrO2 under pressure

Duan

Liu

et al. 2015

Journal of Alloys and Compounds

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Measurement of absorption edge parameters near K edge for the compounds of Zn, Zr, Cd, Ba and Pb

Cited by 10 publications

References 40 publications

Chemical effect on theKshell absorption parameters of some selected cerium compounds

Chemical effect on theKshell absorption parameters of some selected cerium compounds

Study of absorption parameters around the K edge for selected compounds of Gd

First-principles study of phase transition and band structure of ZrO2 under pressure

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