Investigation of a laser driven vacuum diode X-ray source of photon energysimilar to 5 keV

An investigation of a monochromatic point X-ray source of photon energy sim ilar to 5 keV was carried out. The source was set up using a laser produced Al plasma as a cathode and a point-tip Ti anode. Optimum parameters of the diode were determined from experimental measurements of X-ray intensity de pendence on laser pulse energy, applied accelerating voltage, and distance between target (cathode) and anode, using Nd:glass laser pulses (FWHM 30 ns ) of 2 mJ to 4 J energy. Electron temperature characterization of the targe t plasma was also performed from the XUV emission spectrum (5-80 Angstrom). Parameters of X radiation in Ti K-shells are (1) spectral brightness of si milar to 10(20) photons/cm(2)-sec-sr-keV, (2) spatial size similar to 300 m icrons, and (3) X-ray pulse duration less than 20 ns.