On the use of large pixel PIN diode array in plasma diagnostics

Silicon PIN diodes tailored for x-ray diagnostics of high-temperature plasmas were investigated. Their spectral responsivity was determined from the direct calibration of the diodes by x-rays and indirectly through the bombardment by monoenergetic electrons, the accuracy of the calibration amounts to 11.5 %. The single diodes are used in combination with an absorption foil technique, the large pixel PIN diode array was utilized in a compact spectrometer for monitoring the electron temperature and density of laser produced plasma. The construction of the spectrometer and an example of experimental results are presented.