Elemental X-Ray Cross Sections at Selected Wavelengths

Bracewell, B.; Veigele, Wm. J.

doi:10.1007/978-1-4613-9966-7_27

Advances in X-Ray Analysis 1972

DOI: 10.1007/978-1-4613-9966-7_27

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Elemental X-Ray Cross Sections at Selected Wavelengths

B. Bracewell¹,

Wm. J. Veigele²

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1973

1976

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Cited by 3 publications

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X‐ray mass absorption coefficient measurements for aluminium in the range 1.9 to 9.9 Å

Short

Tabock

1975

X-Ray Spectrometry

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at relatively short wavelengths. There is, however. significant disagreement between the different compendia and formulae at relatively long wavelengths. There is also disagreement between the compendia and published experimental values at the longer wavelengths. Typical examples are the coefficients for the absorption of X-ray mass absorption coefficients for aluminum have becn measured for nine wavelengths in the range 1.9 to 9.9 A The values obtained disagree with many published compendia of mass absorption coefficients, but agree well with some published experimental values.

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X‐ray mass absorption coefficient measurements for aluminium in the range 1.9 to 9.9 Å

Short

Tabock

1975

X-Ray Spectrometry

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Concerning the obtaining of effective influence coefficients for X‐ray spectrometric analysis

Sage

Tertian²

1976

X-Ray Spectrometry

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As a consequence of our previous study of equivalent wavelength variations, the so called equivalence relationship between absorbers allows a ready calculation of the influence coefficients of any absorbing element simply from the knowledge of the situation with one particular element. This simple procedure is discussed and then illustrated using the case of iron fluorescence as an example. It is considered particularly advantageous when practising accurate experimental calibration because it yields effective influence coefficients, i.e. that coefficient variation, as well as the particular geometry and spectral intensity distribution of the equipment being used are automatically accounted for. In addition, this method is liable to save much time and notably simplify the requirements for standards.

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X-Ray Cross-Sections in Design and Analysis of Non-Dispersive Systems

Clark¹

1973

Adv. x-ray anal.

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In designing a radioisotope, energy-dispersive (proportional counter) x-ray fluorescence spectrometer for elemental analysis of geologic specimens, a theoretical framework has been developed to model instrument response. This model is based upon the fundamental physics of x-ray excitation, absorption, and scattering, and employs the most modern available values of the applicable physical constants. The model includes matrix absorption and enhancement effects. By explicitly including scattering in the model and the measurements, element concentrations can be calculated from the shape alone of the x-ray spectrum and the presence of elements having non-observable fluorescences can be detected.

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Elemental X-Ray Cross Sections at Selected Wavelengths

Cited by 3 publications

References 4 publications

X‐ray mass absorption coefficient measurements for aluminium in the range 1.9 to 9.9 Å

X‐ray mass absorption coefficient measurements for aluminium in the range 1.9 to 9.9 Å

Concerning the obtaining of effective influence coefficients for X‐ray spectrometric analysis

X-Ray Cross-Sections in Design and Analysis of Non-Dispersive Systems

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