The Paschen α line (1875.1 nm) of the excited hydrogen atom (4s,4p,4d,4f) produced in e-H2 collisions was observed with a grating spectrometer equipped with a PbS detector. The emission cross sections were determined for the electron energy of 100-1000 eV, and were about half as much as those of the Balmer β line of the excited hydrogen atom (4s,4p,4d). The Fano plot indicated that the Paschen line was excited mainly through optically allowed processes as in the case of the Balmer lines.
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy
- Physical and Theoretical Chemistry