K-X-RAY-EMISSION FROM SOLID NEON AND FROM NEON IMPLANTED INTO METALS

The emission of K x-rays following the irradiation of solid Ne at vari ous pressures is investigated. A cryogenic target of solid Ne at vapor pressure is obtained by the condensation of Ne gas on an aluminum bac king maintained at a temperature of 5.5 K. This target is irradiated w ith 2-MeV H+ and He-4(+), and the evolution of the target is controlle d by the detection of backscattered particles. X-ray emission followin g the ionization of Ne is also detected during irradiation. It is obse rved that the x-ray spectra do not significantly differ from the atomi c spectrum recorded on Ne gas. Samples of metals implanted with Ne ion s are irradiated with 4-keV electrons and K x-ray spectra from Ne are recorded. Important broadening effects are observed on the K alpha(1,2 ) lines; the satellites from double ionization are less seriously affe cted. It is observed that the total width of the K alpha(1,2) band is directly related to the shear modulus of the metal.