Lecture Series on Electronics For Analog Signal Processing I by Prof.K.Radhakrishna Rao, Department ...
Lecture Series on Electronics For Analog Signal Processing I by Prof.K.Radhakrishna Rao, Department ...
Lecture Series on Basic Electronics by Prof. TSNatarajan, Department of physics, IIT Madras For more...
Lecture Series on Basic Electronics by Prof. TSNatarajan, Department of physics, IIT Madras For more...
Lecture Series on Electronics For Analog Signal Processing I by Prof.K.Radhakrishna Rao, Department ...
IEEE |
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Views: (2003) Date: (Publication Date: 19-25 Oct. 2...) Pages: () |
Abstract: Abstract In this work, we report on results obtained with two rad-hard Diffusion Oxygenated Float Zone (DOFZ) silicon diodes as on-line gamma dosimeter in radiation processing. One device was not irradiated before using as a dosimeter, while the other received a gamma pre-dose of 700 kGy. The samples irradiation was performed using a 60Co source at a dose rate of 2.50 kGy/h from 5 kGy up 275 kGy. It was investigated the dosimetric response of these devices, operating in short-circuit current mode, with respect to the sensitivity dependence on dose and charge-dose linearity. Without any pre-dose, the diode exhibited a significant sensitivity decrease due to radiation induced point-defects in the crystal bulk. Conversely, the pre-irradiated device presented very stable current signals with a relative charge sensitivity of 0.9 mC/kGy.