Background New 3mm thick optical filter 21.05.2009.

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Presentation transcript:

Background New 3mm thick optical filter

Pre-exp:

Fill complete: CPC = 19p/cc

??

Paul thinks the DMA is arcing at the larger sizes and it can only go up to 350nm!! Chamber is at 80% RH

DMPS scanning 30 – 334nm only

Distribution??!

14:16 Reasonable loading

14:16 Rubbish distribution! Actually, it is not too different from upstairs’ cpc except it does not scan high enough

4 hours of lights DMPS upstairs is measuring ~ 2ug/m3 (scanning up to ~480nm)

Lights on 11:06

Chamber DMPS on “dry” room air