1,720,966 research outputs found
RESONANT AND DIRECT IONIZATION STUDIED BY (E,2E) EXPERIMENTS RID G-7348-2011
No full textThe recent (e, 2e) experiments at intermediate energy and momentum transfer propose harsh challenges to the current electron impact ionization models. Three body long range Coulomb interactions and interference between direct and resonant ionization channels are shown to be the most relevant features of the ionising collision still to be properly accounted for by the theory. A selection of instructive results not explained by the existent models is presented
ELECTRON MOMENTUM SPECTROSCOPY BY ASYMMETRIC (E, 2E) COLLISIONS BELONGING TO THE BETHE RIDGE RID G-7348-2011
No full textGENERALIZED OSCILLATOR STRENGTH FOR THE LYMAN-BIRGE-HOPFIELD BAND IN MOLECULAR NITROGEN RID G-7348-2011
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GENERALIZED OSCILLATOR STRENGTH FOR THE CORE LEVEL EXCITATION OF NITROGEN IN N2, NO AND N2O BY ELECTRON-IMPACT RID G-7348-2011
No full textIONIZATION OF THE N-2 3-SIGMA(G) ORBITAL BY ELECTRON-IMPACT STUDIED BY ASYMMETRIC (E, 2E) EXPERIMENTS RID G-7348-2011
No full textAbsolute triple differential cross sections (TDCS) for the ionization of molecular nitrogen by congruent-to 300 eV electron impact have been measured in a coplanar asymmetric arrangement. Two different values of the energy loss, DELTA-E = 25.6 and 34 eV, have been chosen in order to investigate the ionization mechanism in an energy region where the resonant channel 3-sigma(g) --> epsilon-sigma(u), epsilon-pi(u) competes with the direct process. For each DELTA-E the TDCS have been measured at two momentum transfers, K = 0.7 and 0.35 au, in order to approach the dipolar limit. Theoretical models for molecular TDCS are lacking, therefore the present results are qualitatively compared to TDCS of He obtained under analogous kinematics
ABSOLUTE DOUBLE DIFFERENTIAL IONIZATION CROSS-SECTION FOR ELECTRON-IMPACT - HE RID G-7348-2011
No full textTHE ASYMMETRIC (E, 2E) COLLISIONS AT INTERMEDIATE AND HIGH-IMPACT ENERGY - SUCCESS AND LIMITS OF 1ST-ORDER MODELS RID G-7348-2011
No full textIONIZATION DYNAMICS AT INTERMEDIATE MOMENTUM-TRANSFER - AN (E,2E) INVESTIGATION ON ARGON RID G-7348-2011
No full textAUGER HYPERSATELLITES IN NE ATOMS INDUCED BY ELECTRON-IMPACT RID G-7348-2011
No full textHypersatellites of the KL(2,3)L(2,3) Auger lines were observed in Ne atoms bombarded by a 5-keV electron beam. The relative intensity of the S-2,P-2,D-2 line group with respect to the S-1,D-1 diagram lines and-the energies of particular transitions were determined. The P-4 line was traced, although its definite identification is hindered by poor counting statistics. For an impact electron energy of 2.68 times the threshold energy, the ratio of the double- to single-ionization cross section was found to be (1.45 +/- 0.30) x 10(-3)
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