Abstract
The time-resolved emission spectra from high-voltage pulsed discharges in liquid helium below 4.2 K, 1 atm, and cryogenic helium gas near 4.2 K, 1 atm, have been measured in the visible spectral range. In addition to the well known atomic lines, which exhibit strong and broadened profiles with continua at an early stage, some strong spectral features are observed near 23300 cm-1 ( ∼430 nm) and 25300 cm-1 ( ∼395 nm). The former can be assigned to He 2 transition ( g3Σg +– a3Σu +), and the latter is not observed in previously reported works. These features disappear in 77 K and 300 K, 1 atm, He gas under the same experimental conditions.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
