Abstract
Excimer laser drilling has been used to cut a 20-μm by 5-mm slot in the end of a closed Pyrex tube. The slot nozzle thus formed is suitable for production of a corona-excited supersonic expansion. The performance of the device has been characterized by recording the spectrum of the N+2B–X(0, 0) band at high resolution with the optical axis parallel to the slot and with the axis perpendicular to the slot (simulating a standard pinhole nozzle expansion) for comparison. The spectral lines recorded parallel to the slot nozzle are found to have a Doppler width such that a spin doubling of 0.06 cm−1 is resolved, while the pinhole-type spectrum resolves spin doubling of 0.09 cm−1. The slot nozzle also enhances the intensity of the spectrum, reducing recording time from 10 to 2 min, while maintaining the same approximate rotational temperature of 20–40% K.
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.
