Speaker
Fuyuki Tokanai
(Yamagata University)
Description
We report on the basic characteristics of a capillary plate (CP) gas detector
filled with CF4 gas mixtures of Ne/Ar as a gas scintillation proportional
counter. Both the charge and light signal were investigated. Gas gains of up
to 10 4 can be achieved with the gas mixtures. The energy resolutions of
the charge and light signals were 19.6% and 23.5% for 5.9 keV X-rays,
respectively, at a gas gain of 5000 in Ne (90%) + CF4 (10%) gas mixture.
The emission spectra of the gas scintillation light were measured using the
grating spectrophotometer in the range from 300 nm to 800 nm. There was
one broad continuum extending from 450 nm to 680 nm with the peak of
620 nm for both gas mixtures. The spectra also show the presence of the
atomic lines of Ar and Ne. We exploited the scintillation light for the
realization of the pixelized 2D imaging gas detector. Sharp images of X-rays
and a spatial resolution of less than 160 μm were obtained using an optical
imaging system consisting of a standard photographic lens and a CCD
camera.
Author
Fuyuki Tokanai
(Yamagata University)
