A multipurpose tunable source of monochromatic X-rays

被引：2

作者：

Chesta, MA ^{[1
]}

Plivelic, TS ^{[1
]}

Mainardi, RT ^{[1
]}

机构：

[1] Univ Nacl Cordoba, Fac Matemat Astron & Fis, RA-5000 Cordoba, Argentina

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2002年 / 187卷 / 02期

关键词：

electron impact; characteristic radiation; detector calibration; beta source;

D O I：

10.1016/S0168-583X(01)00935-1

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The emission of characteristic X-rays from any chemical element induced by beta particles of high energy (10(5)-10(6) eV) is much higher than photon excitation. with the possible exception of selective excitation. This work describes the properties of a variable energy X-ray generator that uses (90)Sr as a source of beta particles and a multitarget array in a transparent source geometry. This compact device provides, through suitable selection of the target material, over 30 monoenergetic lines spread uniformly in the energy range of between 6 and 100 keV. The X-ray photon flux thus generated has an intensity of between 10(2)-10(3) s(-1) sr(-1) per MBq of the beta source activity. With this single beta source, the X-ray yield is higher as compared with generators using (241)Am or other X- or gamma-ray sources with the same activity, and the line's intensity changes by less than a factor of three over the whole energy range. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：259 / 263

页数：5