Elsevier

Nuclear Physics A

Volume 142, Issue 3, 2 March 1970, Pages 604-608
Nuclear Physics A

Relative X-ray transition probabilities to the K-shell

https://doi.org/10.1016/0375-9474(70)90816-XGet rights and content

Abstract

Accurate measurements over an extended range in Z have been made of the major K X-ray groups. Errors due to scattering and fluorescent excitation have been minimized by the use of carrier-free radioactive sources mounted on thin Mylar films, resulting in very high peak-to-continuum ratios. The measurements of KβKα, Kα2Kα1, Kβ′1Kα1 and Kβ′2Kα1 X-ray intensity ratios have been carried out to approximately 2% accuracy.

For Z ≧ 38, a high-resolution Ge(Li) X-ray detector (460 eV FWHM at 6.4 keV) was used; at low Z, a Si(Li) X-ray detector (260 eV FWHM at 6.4 keV and a 0.05 mm Be window) was used. The low-energy efficiency of each detector was evaluated with corrections applied for deadlayer absorptions, K X-ray escape, energy-dependent geometry, and detector shape and mounting.

The results are compared with recent relativistic theoretical calculations by Scofield.

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There are more references available in the full text version of this article.

Cited by (117)

  • Relative K X-ray intensity ratios of the first and second transition elements in the magnetic field

    2020, Journal of Molecular Structure
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    When Table 2, Figs. 6 and 7 is looked at, it is seen that IKβ/IKα are different for all elements and as atomic number of elements increase, IKβ/IKα of the elements increase at all magnetic field values. This relation have seen some earlier works [13,14,16,32–34] and this ratio decreases with the increment of the magnetic field for all elements. Perişanoğlu et al. [15] have investigated the effects of external magnetic field (B = 0.5 T and 1 T) and exciting photon energies on IKβ/IKα of various alloy compositions of Ti–Ni transition metal alloys and they found that there is relationship between IKβ/IKα of Ti and Ni inTixNi1-x alloys and the external magnetic field.

  • K-shell X-ray fluorescence cross-sections and intensity ratios for some pure metals at 59.5 and 123.6 keV

    2007, Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
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    The experimental K X-ray IKβ/IKα intensity ratios are also in agreement with the theoretical values calculated for these elements as given in Table 2. The average deviation from the experimental values of Hansen et al. [17] was found to be 3% in calculating the intensity ratio. The deviation was found to be 0.9% in the most reliable the theoretical values of Scofield [18].

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††

Supported in part by the US Atomic Energy Commission.

AEC predoctoral Fellow in Nuclear Engineering.

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