It’s Midterm exams week (Oct. 17 – Oct. 23) and that means a lot of studying and a lot of stress for students and faculty! We’ve opened up the Gabert Library Makerspace with movie showings and arts and crafts activities so you can unwind as your heavy brain processes all the studying you’ve been doing. (As of right now, Moana is being shown. You’re welcome! You’re welcome! And thank you!)
Also, if you have any recommendations of movies to show during finals week, email James Cox and we can set up a time and date to watch your recommendation.
If you have kids, babysit kids, know someone who has kids, or you have younger siblings, nieces, nephews, etc., then feel free to invite them at the following holiday events we will have in the Gabert Library Makerspace! We will have arts and crafts, LEGO, and other activities for all young ages to enjoy. This event also helps HCCC students and staff to de-stress as the fall semester becomes loaded with exams, papers, and other school stuff.
If you have never knitted anything your whole life or you just want to brush up your skills after not having done so for a long time, now is your chance. Starting Oct. 10 and running until Dec. 12 we will be having knitting classes with Diane Damp, AKA yaya17, of Yarn Art Yoga Academy. All skills — newbie, beginner, intermediate, advanced — are welcome. They will be held on Wednesdays and Thursdays in the Gabert Library Makerspace.
No worries! Our North Hudson Library Tech Associate, Devlyn Courtier, will be heading to NYCC and giving us a recap on what kind of cool stuff happened this year. So if you’re curious, stop on by the Makerspace next week on Oct. 8 and find out what’s going on in Marvel, DC, and your favorite fandoms!
Click below to view our Makerspace events for the Fall 2018 semester. We have a lot of activities planned so you guys can break out of the classroom, the books, and paper writing and do something fun to de-stress! We hope to see you there!
Excilamps are sources of spontaneous radiation in UV and VUV spectral ranges, being emissive due to decay of excimer molecules (from excited dimer (excimer) if we say about a molecule consisting of equal atoms, for example Xe2*) or exciplex molecules (from excited complex (exciplex) if we say about a herteronuclear molecule, for example XeCl*).
Example 1. General view of an KrCl-excilamp of barrier discharge with radiant power of 50 W tested at LOR (Institute of High Current Electronics SB RAS, 2002)
Depending on gas type and conditions, in which an electric discharge is realized, exciplex/excimers may form due to different mechanisms, and the typical radiation lifetime of excited molecules is 10-7-10-9 s. Spontaneous decay of excimer and exciplex molecules to single atoms is accompanied by decay lag of a light quantum typical for this molecule
Example 2. The waveforms of radiation as function of wavelength for various excimers and exciplexes (adapted by Оbara M. Recent progress of excimer radiation - research, development and application // Proc. of the 7th Intern. Symposium on the Science and Technology of Light Sources. Kyoto-Japan, 1995. P.149 - 159).
Most conventional UV lamps emit no more than 15 % energy in the range of wavelengths shorter than 300 nm, and with rare exception that is emitted non-selectively (in a wide range of wavelengths).
Most excilamps have major part of radiant flux concentrated in UV- or VUV-range, in a comparatively narrow spectral zone with half-width from 2 to 15 nm (subject to working molecule):
Selection for a working mixture and optimal conditions of excilamps excitation allow obtaining the highest power and efficiency values of radiation at the wavelengths close to maximum band of the working molecule. However, acquisition of such powerful and efficient UV at continua of a number of excimers is restricted by the properties of gas mixtures and systems used for excitation to be realized.
a radiator should be effectively cooled at high excitation powers both in continuous or pulse-repetitive modes;
working mixture degradation in a discharge should be minimal, in order the light source have long lifetime (from tens to thousands hours, depending on specified application).
It is impossible to satisfy these conditions in practice due to excitation of working gas mixtures in excilamps by specified discharge type has its own specific character.
Laboratory of optical radiation is much experienced in investigation, development and application of excilamps. Should you take an interest in our developments, do not hesitate connecting our specialists.