D ESIGN CON SID ERATION S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253 Bll/ding a Trap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253 Beam Steering ....................................................... 254 Trapping Lasers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

We present femtosecond time-resolved photoelectron spectra of adenine in a molecular beam, recorded at pump wavelengths of 250, 267, and 277 nm. This leads to initial excitation of the bright S2(pipi*). Close to the band origin (277 nm), the lifetime is several picoseconds. Higher vibronic levels (267 and 250 nm excitation) show much shorter lifetimes of t < 50 fs, and we observe strong couplin...

This paper reviews the historical development of phonetic vowel systems from 1617 to 2005. In times where the vowel system of the International Phonetic Alphabet (IPA) is the de facto standard in phonetic sciences it is important to learn more about predecessors and alternative considerations of how vowel systems could be organized. This concerns matters of transcriptions, ideas on parameters o...