From its early days in the 1950s, the electron microanalyzer has offered two principal ways of obtaining x-ray spectra: wavelength dispersive spectrometry (WDS), which utilizes crystal diffraction, and energy dispersive spectrometry (EDS), in which the x-ray quantum energy is measured directly. In general, WDS offers much better peak separation for complex line spectra, whereas EDS gives a higher collection efficiency and is easier and cheaper to use. Both techniques have undergone major transformations since those early days, from the simple focusing spectrometerand gas proportional counter of the 1950s to the advanced semiconductor detectors and programmable spectrometersoftoday. Becauseofthesedevelopments, thecapabilities and relative merits of EDS and WDS techniques have been a recurring feature of microprobeconferences for nearly40 years, and this volume bringstogetherthepapers presented at the Chuck Fiori Memorial Symposium, held at the Microbeam Analysis Society Meeting of 1993.
Several themes are apparent in this rich and authoritative collection of papers, which have both a historical and an up-to-the-minute dimension. Light element analysis has long been a goal of microprobe analysts since Ray Dolby first detected K radiation with a gas proportional counter in 1960.
Mdk-arm Download
WDS techniques (using carbon lead stearate films) were not used for this purpose until four years later. Now synthetic multilayers provide the best dispersive elements for quantitative light element analy sis-still used in conjunction with a gas counter.
Mdk Arm 4.13a Side
I got schooled up today. Soooo, nevermind. Got it all figured out now.Some drunk as fuck, inbred looking, strange guy in the Wally-mart parking lot overheard me asking a friend about this.He ran the 1 1/2 parking spots to my car yelling 'I got it, man. I got got it!' He began to tell us that if I set the vari-tap at the 12v setting, I could use a 12v automotive, sound system amp. That's how he always does ALL of his. 'It will out blast the 70v setting.
But only as long as it was made after 1989 or 90.' He then mumbled something that sounded like, 'Attaching only 1 speaker to a new amp built for 5 will be Oh Key, Dough key, Pokey.' Then he went on to claim that if I used an old amp I would have to twist 2 or more + wires, from other speaker ports together before attaching it to the speaker. 'Because an old ones cause mondo problemos'.Mumble mumble.
Mdk Arm 4.13a Back
'Burn, cook, fry' mumble something else.The whole time he was reaching into my passenger side window, taking cigarette butts from my ashtray one by one, taping them once on his nose, smelling it maybe, then tucking them all in a row, under the windshield wiper blade of the car parked next to me. Post Extras:Pages: 1Similar ThreadsPosterViewsRepliesLast post899804/05/06 11:46 PM1,827911/08/05 11:34 PM2,169509/24/04 12:49 PM2,835710/12/11 12:44 AM568008/01/10 04:07 PM1,4011708/03/05 05:31 AM752508/31/08 08:28 AM1,4081103/02/06 03:58 AMExtra informationYou cannot start new topics / You cannot reply to topicsHTML is disabled / BBCode is enabledModerator:,1,223 topic views. 0 members, 0 guests and 3 web crawlers are browsing this forum. Search this thread.