K-shell X-ray production cross-sections and fluorescence yields in some medium-Z elements

Özdemır, Yüksel; Durak, Rıdvan; Öz, Elif

doi:10.1016/s0969-806x(02)00276-1

Cited by 27 publications

(13 citation statements)

References 26 publications

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“…In the last few years there has been a considerable increase in the number of experimental high precision measurements of the K shell fluorescence yields for many elements [9,10,11,12,13,14,15,16,17]. The results show several discrepancies when compared with theoretical and semi-empirical data.…”

Section: Introductionmentioning

confidence: 99%

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Relativistic K shell decay rates and fluorescence yields for Zn, Cd and Hg

Casteleiro

Parente²,

Indelicato³

et al. 2009

Eur. Phys. J. D

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Abstract. In this work we use the multiconfiguration Dirac-Fock method to calculate the transition probabilities for all possible decay channels, radiative and radiationless, of a K shell vacancy in Zn, Cd and Hg atoms. The obtained transition probabilities are then used to calculate the corresponding fluorescence yields which are compared to existing theoretical, semi-empirical and experimental results.

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Section: Introductionmentioning

confidence: 99%

“…The results show several discrepancies when compared with theoretical and semi-empirical data. For Cd, for example, four experimental results have been published in this decade [11,13,14,17]. Yet, no relativistic calculation has been performed so far for this element.…”

Section: Introductionmentioning

confidence: 99%

Relativistic K shell decay rates and fluorescence yields for Zn, Cd and Hg

Casteleiro

Parente²,

Indelicato³

et al. 2009

Eur. Phys. J. D

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“…The K lines for present elements separated from the Ar K lines and so, for these targets, there was no problem in evaluating the peak integral of the K X-ray lines. According to earlier methods [3][4][5][6][7][8][9][10][11][12][13][14], it is necessary to measure L X-ray production cross-sections at above and below energies from K shell binding energy. For the Si (Li) or Ge (Li) spectrometer, it is not possible to determine L X-ray line intensities for the low atomic number elements because of detector efficiency.…”

Section: Resultsmentioning

confidence: 99%

“…Recently, there were several works on L X-ray intensity ratio [2][3], K, L and M X-ray production cross-sections [4][5][6][7][8], Coster-Kronig transitions probabilities [9][10] and chemical effect [11] for many elements using EDXRF spectrometry.…”

Section: Introductionmentioning

confidence: 99%

Vacancy Transfer Probabilities from K to L Shell for Low Atomic Number Elements at 5.96 keV

et al. 2010

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Vacancy transfer probabilities from K to L shell were measured using I Kβ /IKα intensity ratios for six elements in the atomic region 16 ≤ Z ≤ 22. The K X-rays from the targets excited by 5.96 keV (1.85 GBq 55 Fe filtered annular source) incident photon were obtained using a high resolution PGT model Si(Li) detector. Theoretical values were calculated using radiative and radiationless transition rates of these elements. The measured values of ηKL were compared with the theoretical ones. Reasonable agreement was typically obtained between present and theoretical values.

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“…These data also serve as important inputs in the XRF technique which is considered to be one of the most powerful methods for elemental analysis. In a few recent measurements (Ö zdemir et al, 2002;Durak and Ö zdemir, 2001b;Karabulut et al, 1999;Durak, 1998), it has been demonstrated that the K shell fluorescence cross sections can be calculated with an accuracy of a few percent. For the L shell, however, the scenario is far from satisfactory.…”

Section: Introductionmentioning

confidence: 99%