Radiation Detection Circuit

HI all,
i need to make a Radiation detector, can anybody help me to know what kind of IC is used and how can i interface it to any microcontroller.

I guess you mean radiation as in nuclear and cosmic radiation? A scintillator is a possible project. It requires a special sensor.

A Geiger meter contains a special tube which is supplied constantly with high voltage. A counter circuit keeps track of frequency of clicks.

The ionization type of smoke alarm contains a bit of radioactive Americium. It can be a test source for experimentation. The alarm circuit senses electrical conductivity of air surrounding the Americium. Therefore it is unlikely to contain a sensor for radiation detection.

There are many sorts of radiation. One distinction is ionizing
vs non-ionizing. A Geiger-Muller gas tube detects ionizing
radiation (electron, proton, heavy ion, gamma, X-ray) but
ignores neutrons (these need special media to convert to
some other more detectable energetic species).

Any PN junction is an ionizing radiation detector. The issue
is sensitivity (real and false) all down the line, from the
self-capacitance and conversion efficiency at the front
end, to signal chain noise and gain and pulse shaping /
extinction.

There are many, many, many papers published by CERN
and affiliated science-funding-ticks about radiation detector
circuits and sensors. You can also find dosimeters using
charge accumulation (detect and integrate) and event-
counting methods if you dig deep.

IC which can be used for radiation detection - X100-7 THD ...
And with radiation I meant ionizing part of electromagnetic spectrum.