IMPROVEMENT IN THE PRECISION AND THE FACILITY OF CHEMICAL SHIFT MEASUREMENTS USING A POSITION-SENSITIVE CRYSTAL SPECTROMETER FOR PIXE

Author:

MAEDA KUNIKO1,TONOMURA ATSURO2,HAMANAKA HIROMI2,HASEGAWA KENICHI2

Affiliation:

1. The Institute of Physical and Chemical Research (RIKEN), Wako-shi, Saitama 351-0198, Japan

2. Faculty of Engineering, Hosei University, Koganei-shi, 184-8584, Japan

Abstract

A narrow entrance slit was attached to an in-air high-resolution PIXE system composed of a flat analyzing crystal and a position-sensitive proportional counter. Chemical shift measurements were carried out for Si, P and S Kα1,2 lines from various sample targets. The precision of measurements is much improved compared with that obtained by the position-sensitive crystal spectrometer system without the entrance slit. The new system equipped with the entrance slit does not require exact sample positioning. It is applicable to non-flat targets. Chemical shift measurements are also possible while moving the targets.

Publisher

World Scientific Pub Co Pte Lt

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