Journal ArticleDOI
Experimental investigation of angular dependence of photon induced L-shell X-ray emission intensity
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In this article, the angular dependence of emission intensity of L shell X-rays induced by 59.57 keV photons in Pb and U is investigated by measuring the normalized intensities of the resolved L X-ray peaks at different angles varying from 40° to 120°.Abstract:
The angular dependence of emission intensity of L shell X-rays induced by 59.57 keV photons in Pb and U is investigated by measuring the normalized intensities of the resolved L X-ray peaks at different angles varying from 40° to 120°. It is observed that while L
l
and Lα X-ray peaks (originating fromJ = 3/2 state) show some anisotropic angular distribution, the emission of Lβ and Lγ X-ray peaks is isotropic. The present results contradict the calculations of Co-oper and Zare (1969) that after photoionization of inner shell, the vacancy state has equal population of magnetic substates and the subsequent X-ray emission is isotropic but confirm the predictions of Fluggeet al (1972) that the atomic inner shell vacancies produced after photoionization are aligned and the x-ray emission from the filling of vacancies in state withJ ⩾ 3/2 is anisotropic.read more
Citations
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Journal ArticleDOI
A Review, Bibliography, and Tabulation of K, L, and Higher Atomic Shell X‐Ray Fluorescence Yields
John H. Hubbell,P. N. Trehan,Nirmal Singh,B. Chand,D. Mehta,M. L. Garg,Ravinder Garg,Surya Prakash Singh,Sanjiv Puri +8 more
TL;DR: The K, L, and higher atomic shell x-ray fluorescence yield measured data, covering the period 1978 to 1993, following the major previous compilations by Bambynek et al. as mentioned in this paper, are reviewed.
Journal ArticleDOI
Measurement of cross-sections and Coster-Kronig transition effect on L subshell X-rays of some heavy elements in the atomic range 79≤Z≤92 at 59.5 keV
TL;DR: In this article, the effect of Coster-Kronig transition on X-ray production cross-sections has been investigated in the atomic range 79 ≤ Z ≤ 92 at 59.5 keV by measuring the absolute yield of L subshell X-rays emitted from a target of a given element and thickness when it was bombarded with a known flux of photons of given energy.
Journal ArticleDOI
Angular dependence of l x-ray emission in pb following photoionization at 22.6 and 59.5 kev
TL;DR: In this article, the angular dependence of L x-rays following photoionization at 22.6 and 59.5 keV in 82Pb has been investigated by measuring the intensity ratios I(L1)/I(L), I (L)/I (L), and I(l)/I
Journal ArticleDOI
Anisotropy of L-shell X-rays in Au and Hg excited by 59.5 keV photons
TL;DR: The anisotropy of emission intensity of L-shell X-rays induced by 59.5 keV photons in Au and Hg was investigated at different angles varying from 45° to 135°.
Journal ArticleDOI
Angular Dependence of Differential Cross-Sections of L X-Rays from Hg, TI, and Pb at 59.5 keV
TL;DR: In this article, the authors measured differential cross-sections of L shell X-rays from Hg, T1, and Pb at different angles varying from 45° to 135° at 15° intervals.
References
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Journal ArticleDOI
Photon cross sections from 1 keV to 100 MeV for elements Z=1 to Z=100
Lellery Storm,Harvey I. Israel +1 more
Journal ArticleDOI
Angular Distribution of Auger Electrons Following Photoionization
S. Flügge,W. Mehlhorn,V. Schmidt +2 more
TL;DR: In this article, it was shown that the photoionization process of inner-shell electrons by unpolarized radiation leads to an alignment of the ionized atoms by using the nonisotropic angular distribution of the following Auger electrons.
Journal ArticleDOI
Measurement of Cross Sections for X-Ray Production by High-Energy Electrons
TL;DR: In this article, a study was made of the large $K$-ionization cross sections of atoms over a wide range of atomic numbers and of incident electron energies, which appeared to fit a power-law dependence on the atomic number.
Journal ArticleDOI
Angular distribution and photoionization measurements on the 2p and 2s electrons in neon
TL;DR: In this article, the angular distribution parameter beta has been measured for the neon 2p electrons in the energy range 0-80 eV above threshold using a synchrotron light source and the absolute photoionization cross section of neon 2s electrons has also been determined in the 0-130 eV region above threshold.