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M-SHELL X-RAY TRANSITION RATES FOR HEAVY RARE EARTH ELEMENTS

K. SERA

Cyclotron Research Center, Iwate Medical University, Tomegamori, 020-0173 Takizawa, Japan

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K. ISHII

Cyclotron Radioisotope Center, Tohoku University, Aramaki, Aoba, 980-8578 Sendai, Japan

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, and

H. ORIHARA

Cyclotron Radioisotope Center, Tohoku University, Aramaki, Aoba, 980-8578 Sendai, Japan

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https://doi.org/10.1142/S0129083598000273Cited by:0 (Source: Crossref)

Abstract

Partial M-x-ray production cross sections, which have not been well investigated up to the present, were measured in detail for six heavy lanthanides; Dy, Ho, Er, Tm, Yb and Lu. As a result, it is found that intensities of Mα,β lines, which are dominant among all the M-x-rays, and (M1-N2, M1-N3, M2-N4) lines agree well with those predicted by theory. However, clear discrepancy is found for Mζ and Mγ x-rays. Although it was pointed out by a PIXE analysis with a high-resolution crystal spectrometer that special attention must be paid for an analysis of Mζ and Mγ lines, it is found from the present work that it is possible to perform quantitative analysis using Mα,β lines.

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