Peculiarities of the external photoelectric effect in narrow-band semiconductors caused by soft X-ray radiation

The features of the external photoelectric effect caused by soft x-ray radiation of a laser plasma source in CdxHg1-xTe solid solutions are considered. The possibility of a contribution from the ionization of internal electron shells to the photocurrent and the generation of a pulsed electric field in the near-surface region due to the output of photoelectrons are discussed

The source of X-rays and high-charged ions based on moderate power vacuum discharge with laser triggering

The source of X-ray radiation with the energy of quanta that may vary in the range hν = 1÷12 keV was developed for studies in X-ray interaction with matter and modification of solid surfaces. It was based on a vacuum spark discharge with the laser triggering. It was shown in our experiments that there is a possibility to adjust X-ray radiation spectrum by changing the configuration of the electrode system when the energy stored in the capacitor is varied within the range of 1÷17 J. A comprehensive study of X-ray imaging and quanta energy was carried out. These experiments were carried out for the case of both direct and reverse polarity of the voltage on the electrodes. Additionally, ion composition of plasma created in a laser-triggered vacuum discharge was analyzed. Highly charged ions Zn(+21), Cu(+20) and Fe(+18) were observed