The effect of an external magnetic field on the L3 subshell fluorescence yields and level widths for Gd, Dy, Hg and Pb at 59.5 keV

被引：18

作者：

Demir, Demet ^{[1
]}

Sahin, Yusuf ^{[1
]}

机构：

[1] Ataturk Univ, Fac Arts & Sci, Dept Phys, TR-25240 Erzurum, Turkey

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2007年 / 254卷 / 01期

关键词：

photoionization; fluorescence yields; level widths; external magnetic field;

D O I：

10.1016/j.nimb.2006.10.069

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The effect of external magnetic field on the L-3 subshells fluorescence yields (omega(3)) and level widths (Gamma(L3)) for ferromagnetic Gd and Dy and diamagnetic Hg and Pb have been investigated using the 59.5 keV incident photon energy in the external magnetic field of intensities +/- 0.75 T. L-3 X-ray production cross sections (sigma(X)(L3)) have been measured for the same elements. The measured omega(3), Gamma(L3) and sigma(X)(L3) values for B = 0 are in good agreement with the theoretical values. It was observed that the values of omega 3 and sigma(X)(L3) with the applied magnitude of the magnetic field in both directions increase for ferromagnetic Gd and Dy but decrease for diamagnetic Hg and Pb. Furthermore, in the presence of an external magnetic field, the values for Gamma(L3) decrease for Gd and Dy, and increase for Hg and Pb. The results show that the atomic parameters such as spectral linewidth, radiation rates, photoionization cross section and fluorescence yield can change when the irradiation is conducted in a magnetic field. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：43 / 48

页数：6

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