To provide a charged particle detecting device with high radiation resistance, fast time responsiveness, and particularly suitable for use as a heavy ion beam detector.
This device is provided with current sources 45 and 46 for feeding current to a superconducting tunnel junction element 41 composed by sandwiching a tunnel barrier by two superconductive metallic thin films, and a voltage detector 43 detecting voltage pulses occurring in the superconducting tunnel junction element. In a particle waiting state, the current source feeds a bias current to the superconducting tunnel junction element smaller than a critical current of the element and larger than a critical current which decreases when a charged particle is made incident on the element, and when a charged particle is made incident on the element, the current source resets the bias current to an initial bias current via a zero current using an output of the voltage detector 43 as a trigger.
SHIMIZU HIROHIKO
IKEDA TOKIHIRO
OKU TAKAYUKI
TAKIZAWA YOSHIYUKI
WATANABE HIROSHI
KAWAI KAZUHIKO
OTANI TOMOYUKI
MIYASAKA HIROMASA
