Absolute differential cross sections for electron excitation of silver at small scattering angles

Electron-impact excitation of the (4d105s)S1/22→

“…In the present experimental study of some of the higherlying excited states in Ag, we used the same spectrometer that had been specifically designed for electron-metal-atom scattering investigations [19]. It is the same spectrometer we employed in our earlier elastic scattering [8] and excitation of the unresolved (4d 10 5p) 2 P1/2,3/2 levels [10,11] in silver. As a consequence, only a brief description of its utility need be given here, with an emphasis on any experimental procedures that differed from those used previously.…”

“…1, with only the lower-lying (4d 9 5s 2 ) 2 D5/2 missing as it is unresolved from the (4d 10 5p) 2 P1/2,3/2 levels. Note that Tošić et al [10,11] and McNamara et al [12] both assumed that the contribution of the 4d 5/2 state to the 5p 1/2,3/2 states would be very small, and so could be ignored. The present RDW calculation (see next section), although we do not explicitly show its results, confirms the validity of that assumption.…”

“…That work also included corresponding theoretical optical potential (OP) results. An initial relativistic distorted wave (RDW) computation for excitation of the (4d 10 5p) 2 P1/2,3/2 levels was reported by Zeman et al [9], with subsequent experimental cross sections, although the J = 1/2 and 3/2 states were not energetically resolved in their work, being given by Tošić et al [10,11]. Note that in that latter work [10,11], updated RDW results from an improved code were also reported.…”

“…An initial relativistic distorted wave (RDW) computation for excitation of the (4d 10 5p) 2 P1/2,3/2 levels was reported by Zeman et al [9], with subsequent experimental cross sections, although the J = 1/2 and 3/2 states were not energetically resolved in their work, being given by Tošić et al [10,11]. Note that in that latter work [10,11], updated RDW results from an improved code were also reported. Perhaps the most comprehensive investigation conducted so far was the relativistic convergent close coupling (RCCC) computation by McNamara et al [12].…”

On the Application of Stark Broadening Data Determined with a Semiclassical Perturbation Approach

“…Na I data [174] have been used for the derivation of electron density radial profiles from Stark broadening in a sodium plasma produced by laser resonance saturation [175] and for the study of the mechanisms of resonant laser ionization [176], Be II [177] data for oscillator strength ratio measurements [178], Ca I [179,180] for the determination of differential and integrated cross sections for the electron excitation of the 41Po state of calcium atom [181] and for investigation of charged particle motion in an explosively generated ionizing shock [182], Ca II [137] for chlorine detection in cement with laser-induced breakdown spectroscopy [183] and for dynamical plasma study during CaCu3Ti4O12 and Ba0.6Sr0.4TiO3 pulsed laser deposition [184], Mg I [185] and Mg II [186] for consideration of plasma plume induced during laser welding of magnesium alloys [187], Sr I [188] for investigation of vapor-phase oxidation during pulsed laser deposition of SrBi2Ta2O9. [189], for the measurement and control of ionization of the depositing flux during thin film growth [190] and for space and time resolved emission spectroscopy of Sr2FeMoO6 laser induced plasma [191], Li II [192] for examination of spatial and temporal variations of electron temperatures and densities from EUV-emitting lithium plasmas [193] and for modeling of continuous absorption of electromagnetic radiation in dense partially ionized plasmas [194], Ba I and Ba II [152,153] for investigation of plasma properties of laser-ablated strontium target [195] and for laser-based optical emission studies of barium plasma [196], Ag I [197] for determination of absolute differential cross sections for electron excitation of silver at small scattering angles [198], Cd I [199] for investigation of cadmium plasma produced by laser ablation, namely for its diagnostics [200], fo...…”