Elastic scattering of 13 to 100 eV electrons from N2

Abstract

The cross section for elastic scattering of electrons from N2 has been measured between 13 and 100 eV. The relative differential cross sections for elastic scattering and for excitation of the C 3Il. v' = 0 and I bands were measured over the angular range from 20· to 90· in the 13-35 eV region and from 5· to 90· in the 40-100 eV region. The integrated cross sections were placed on an absolute basis by normalizing the C 3Il. v' = 0 excitation cross section to the known emission cross section for the Second Positive system of nitrogen (C 3Il. -> B 3Il g ) and by calibrating the electron spectrometer with respect to other electron scattering results. The total elastic scattering cross section varies from 12.3 X 10-16 cm 2 (±50%) at 13 eV to 3.9X 10-16 cm 2 (±50%) at 100 eV.The pressure dependence of the scattered signal was studied to demonstrate the absence of multiple scattering. Analysis of the data up to pressures of 25 mtorr by the method of Lassettre and Francis 19 demonstrated the lack of multiple scattering in the elastic and inelastic C 3ITu channels. The ratio of elastic/C 3ITu signal was independent of pressure over the same pressure range. During the actual experiments, the pressure of the

Scattering of e± from N2 in the energy range 1 eV–10 keV

“…Inner atoms of the molecule are screened by the outer atoms which do not contribute to the scattering, thereby causing the lessening of the cross-section. In Figures 8(b ,c), we present IECS and MTCS, respectively, along with the experimental data [4,[9][10][11][12]22,34] and theoretical calculations [29,31,32]. In both cases, our calculations show good agreement with the experimental observations above 10 eV.…”

“…TCS data for both electron and positron scattering have been measured by Hoffman et al [21]. IECS measurements have been reported by Finn and Doering [22]. Furthermore, Itikawa [4], Shyn and Carignan [9] and Srivastava et al [10] reported data on IECS and MTCS.…”

Low-energy electron scattering by N, P, As and Sb

“…In figures 1, 2 and 3 we compare our calculated cross sections for N 2 with experimental data from [14][15][16] and find a general good agreement. Figure 4 shows the integral elastic Integral elastic cross section for N 2 .…”

“…Figure 4 shows the integral elastic Integral elastic cross section for N 2 . Solid curve: our results; squares: experimental results from [14]; circles: experimental results from [15]; diamonds: experimental results from [16].…”

Numerical simulation of the two-dimensional structure of glow discharge in molecular nitrogen in light of vibrational kinetics

“…In this work, the set of cross sections was used that was proposed in [23] and obtained on the basis of mea surements of the total and differential [24,27] cross sections of scattering and also on the ground of theo retical calculations [28,29]. Additional normalization of the set of cross sections with respect to experimental data (transfer coefficients and the Townsend coeffi cient) was not conducted; however, the comparison of the drift velocity and the characteristic energy of elec trons calculated on the basis of this set of cross sections ( ) ( )…”