Au L-shell x-ray emission induced by 154.3–423.9 MeV/u C6+ ions

Abstract

The L-shell x-ray emissions of gold are investigated for the bombardment of high energy C6+ ions in the high energy region of 154.3–423.9 MeV/u. Due to the multiple ionization of outer-shell electrons at the movement of L x-ray emission, the blue shift of the experimental x-ray energy and an enhancement of the relative intensity ratios of Lι, Lβ–Lα x rays are observed. Using the improved thin target formula and considering the effect of multiple ionization on atomic parameters, the L-subshell x-ray production cross sections are extracted from the counts and compared with the theoretical estimations of BEA, PWBA and ECPSSR. It is found that the relative corrections of ECPSSR on PWBA can be ignored in the present experimental energy region. The calculations of PWBA and ECPSSR are almost identical and both are larger than the experimental results. The BEA is in better agreement with the experiment as a whole.

Synthesis and Microwave Absorption Properties of Fe3O4/CuS Composites

“…In addition, Fe 3 O 4 /CuS composites have dielectric and magnetic loss; consequently, their microwave absorption performances are superior to those of CuS and Fe 3 O 4 . The dielectric‐magnetic composites have a double loss, [ 61,62 ] and their absorption bandwidths are wider than those of the single phases because of heterogeneous interface coupling. [ 57,63 ] Interfacial coupling produces additional interfacial polarization and interfacial polarization loss, resulting in the effective absorption band broadening of Fe 3 O 4 /CuS.…”