Popov, E.A.; Eloranta, J.; Ahokas, J.; Kunttu, H.
(Физика низких температур, 2003)
Optical emission studies on a discharged nitrogen-helium gas jet injected into superfluid helium near 1.5 K are described. The analysis of atomic (a-group) and molecular Vegard-Kaplan transitions clearly indicates that the ...